[q] otg cable causes total shutdown - Nexus 7 Q&A, Help & Troubleshooting

I got an OTG cable off ebay and it said it was good for nexus7.
PROBLEM IS...
When i plug it in nexus7 Instantly, totally shuts off.
Will NOT turn back on no matter how much i push POWER....
UNLESS i plug my nexus 7 back into it's wall charger.
Anyone ever have this problem with an OTG cable?

Are you plugging in just the cable, or are you connecting something to it? I had my N7 reboot when I was screwing with USB power and a hard drive.

Hi. First I tried it with nothing at all. I thought it killed my N7.
Than I tried it with it plugged into my six axis gamepad.
Same thing.
No matter how much I would push the power button it wouldn't go on.
Plug in my Ac adapter and it boots.
I'm using stock, unrooted.
Any setting that can cause this?
Im thinking some wires that are not supposed to be touching inside the connector are shorted.

EBay merchandise is always questionable quality. Yours is shorted - send it back to the seller. He will sell it to the next guy in line...
Sent from my Nexus 7 using xda app-developers app

...or get a new one, it probably cost less then shipping.
Check out dx.com, I got 2 adapters and one cable (all OTG) from there, and everything works.

Thank you. I'll get another. I'll let you know how it goes.
Oh, I have a question.
Is there an otg cable that allows charging of N7 while using with a gamepad?

OTG charging cable
brantgoose said:
Thank you. I'll get another. I'll let you know how it goes.
Oh, I have a question.
Is there an otg cable that allows charging of N7 while using with a gamepad?
Click to expand...
Click to collapse
With stock kernel OTG charging will not work.
If your Nexus is rooted, you can flash custom kernel (Timur's latest mobile kernel from http://rootzwiki.com/topic/37755-timurs-kernel-usb-host-power-management-usb-audio/). The one from faux123 (013) will also work, but charging mode must be enabled/disabled via script. In Timur's kernel it's automatic.
Then something like this will work (I use the first one, but ordered the second now):
http://www.ebay.com/itm/Micro-USB-Host-OTG-Cable-w-USB-power-Male-Female-Samsung-S2-i9100-S3-i9300-9220-/261161262679?pt=PDA_Accessories&hash=item3cce6c9e57
or
http://www.ebay.com/itm/Left-angled-Micro-USB-OTG-Cable-With-USB-power-for-i9100-i9300-i9220-i9250-N7100-/380553042368?pt=PDA_Accessories&hash=item589aba99c0
Hope it helps.

OK. .I guess i will need to Root than. The reason i wanted to use the OTG cable was to not Root. But since i can't charge while playing. (without rooting anyway)
I'll root and than i'll be able to run the controller off of bluetooth and charge.
Thank you.

brantgoose said:
OK. .I guess i will need to Root than. The reason i wanted to use the OTG cable was to not Root. But since i can't charge while playing. (without rooting anyway)
I'll root and than i'll be able to run the controller off of bluetooth and charge.
Thank you.
Click to expand...
Click to collapse
does anyone know if a mouse using an otg cable will work in recovery mode. cracked my screen looking for a way to flash new roms but not dont want to restart my tab because im afraid i wont be able to get out of recovery. im running m-kernel 32a with multiboot.

I don't know but if you start a new thread your bound to get way more hits and maybe someone who knows would see it.

The CABLE was the culprit. Got a new one. It works. Thanks.

bringing this one back from the dead. i have a KNOWN GOOD usb otg adapter that works flawlessly in my nexus 5 but has the exact same symptoms as the OP, it powers fully off and wont turn back on without a wall charger or battery pull.
sincei know its not the adapter what other options do we have

Related

Nexus 7 dead after using OTG

Hello,
last night i received my OTG cable. My nexus is rooted with custom kernel so I decided to transfer some files from my usb stick. Everything was fine when i plugged and played some song from flash stick but then i leave it connected for 2 hours and when i come back my nexus was dead..
I tried everything but its always black screen. My friend who gave me this OTG cable told me that micro USB connector of the cable is little shorter than normal. Is this is a problem? What you think is happen?
I saw other post with a “dead“ that come back pressing the power button for a long time (30seg+)
Sent from my LG-P500 using xda premium
nexus 7 .using ext usb and dongle 3g...
Hy.. I'm omer from Karachi...
I have Google nexus 7... just rooted my tablet unlocked bootloder.. cause I need to use ext is and USB dongle for 3g internet..
We'll now I have both of them..got the otg cable and dongle... both are working just fine..no issues
Huawei dongle works amazingly well with nexus..using PPP widget..
If u need any help just contact me through my email
Thanks regards
Omer saeed khan
[email protected]
Bladyle said:
Hello,
last night i received my OTG cable. My nexus is rooted with custom kernel so I decided to transfer some files from my usb stick. Everything was fine when i plugged and played some song from flash stick but then i leave it connected for 2 hours and when i come back my nexus was dead..
I tried everything but its always black screen. My friend who gave me this OTG cable told me that micro USB connector of the cable is little shorter than normal. Is this is a problem? What you think is happen?
Click to expand...
Click to collapse
Ive gotten my nexus stuck like that before. What I did to fix is to hold VOL +/- and power until the screen flashes and the Nexus7 reboots then.

[Q] Nexus 7 Not charging/USB not detected while turned on

My nexus 7 recently started to behave weirdly, it doesnt charge while turned on, neither with USB or AC. It does charge perfectly well when turned off.
I am unable to use the USB either no device is detected, nor in normal mode, USB debugging, fastboot or adb.
Please help me to get this USB brick fixed on my Nexus 7 asap.
Please help developers!
santan007 said:
My nexus 7 recently started to behave weirdly, it doesnt charge while turned on, neither with USB or AC. It does charge perfectly well when turned off.
I am unable to use the USB either no device is detected, nor in normal mode, USB debugging, fastboot or adb.
Please help me to get this USB brick fixed on my Nexus 7 asap.
Please help developers!
Click to expand...
Click to collapse
I've had this problem for a few weeks now and have yet to find a solution.
I'm quite astonished I haven't found a fix for this either. I have yet to open mine up ... I'm try to get the bootloader relocked, so I can warranty the dumb thing. But since it's not recognized by USB when powered on, I can't.
Have you tried putting pressure on the cable when it's plugged in? Also are you using the factory cable?
Sent from my Nexus 7(2012) that has zero issues.
SlowCobra96 said:
Have you tried putting pressure on the cable when it's plugged in? Also are you using the factory cable?
Sent from my Nexus 7(2012) that has zero issues.
Click to expand...
Click to collapse
Yep ... Tried pushing. Pulling. Etc. Factory cable. Non factory. Doesn't seem to matter. Anything I use charges fine off. Once on ... No juice
Sent from my EVO using Tapatalk 4
cmonsterf50 said:
Yep ... Tried pushing. Pulling. Etc. Factory cable. Non factory. Doesn't seem to matter. Anything I use charges fine off. Once on ... No juice
Sent from my EVO using Tapatalk 4
Click to expand...
Click to collapse
Unfortunately it is a hardware failure. Most likely the USB port assembly. It is possible there is a loose ribbon cable connection.
Nexus 7 not charging
I have the same problem. My Nexus 7 will not charge when turned on. It will not now connect to my pc. I have checked the drivers and all are ok.
It happened a few days ago Its rooted. I can restore backups that are on my Nexus through rom manager, but still the same problem. I thought of doing a factory reset, but if it will still not connect to my pc. I will loose the data. If it is a hardware usb port failure, what is the next stop
I know this is going to sound strange but open up the back of the Nexus and you will find your battery... And you will notice that it's loose you have to plug or wedge it back on to the battery clip it comes loose overtime use a credit card or similar to open the case :thumbup: success
sent from my t mobile S4
krazierokz said:
I know this is going to sound strange but open up the back of the Nexus and you will find your battery... And you will notice that it's loose you have to plug or wedge it back on to the battery clip it comes loose overtime use a credit card or similar to open the case :thumbup: success
sent from my t mobile S4
Click to expand...
Click to collapse
Thanks for reply, already checked battery and connections. It charges perfect when not switched on, that's what I find strange. It also charges when connected to my pc
sorry man good luck was hoping i could shed some light LOL
Did you find an answer, I also have the same problem
Sent from my Nexus 7 using xda app-developers app
Nexus 7 not charging/USB not detected while turned on
mswin341 said:
Did you find an answer, I also have the same problem
Sent from my Nexus 7 using xda app-developers app
Click to expand...
Click to collapse
Has anybody else had the same problem, if so, how did you overcome it.
Similar thing happened to me... No amount of pressure or angling of the charging port would work. Batteries ran dead as a result. Sent it to the service center and they would assess it for 2-3 days and try to repair since it is under warranty. I'm gonna get an official dock to try and save the charging port from the stress of always being in use although I know that's not the only factor at play.
Nexus 7 not charging/USB not detected while turned on
raylgo said:
Similar thing happened to me... No amount of pressure or angling of the charging port would work. Batteries ran dead as a result. Sent it to the service center and they would assess it for 2-3 days and try to repair since it is under warranty. I'm gonna get an official dock to try and save the charging port from the stress of always being in use although I know that's not the only factor at play.
Click to expand...
Click to collapse
That's sounds a good idea with the official dock for charging, but you should not have to do that.
To much usage of the micro usb port is going to give problems. I'm always connected to my pc, downloading roms ect. but as I said before, my N7 charges perfectly when not turned on.
Nexus 7 not charging/USB not detected while turned on
As I can't connect my N7 to my pc. Is there anyway to revert to stock. Need to return for repair. USB port not working as it should.
N7 is rooted
I have the same problem
Does anybody solve this issue?
I have the same problem, please help me
Write me to [email protected]
Thx
Nexus 7 not charging/USB not detected while turned on
Unimetano said:
Does anybody solve this issue?
I have the same problem, please help me
Write me to [email protected]
Thx
Click to expand...
Click to collapse
I think the only answer is a faulty USB connection.
I tried to change mine and finished up snapping the connectors. :crying:
Now have one useless N7
Long story short: plugged the n7 into the car's OEM stereo USB port on a long trip and it registered as a device with the stereo and let me play some music off of it, when I woke up a couple hours later it wouldn't charge.
After a short bit of troubleshooting, I found that OTG devices were still working but it would only charge if I shut it right down - if I start it charging while it's turned off and leave the charger attached while powering it up it's not detected by the software so it never says it's charging, but does still charge - though if at any point I pull the charger from either the n7 or it's supply I have to shut it right down again to get it to charge. Unfortunately, the same can't be said of a PC USB device connection (aside from the charging part of course.)
After a couple weeks using it like this, I got my hands on a multimeter (my stuff is all packed in storage indefinitely or I'd have been replying to this topic sooner) and confirmed that I never register anything beyond a few millivolts on the detect/sense pin (which I find very odd as it's supposed to have a pull-up) with nothing attached to the usb port, and that aside from a short time in fasboot that unless the n7 is powered right off it's trying to supply 5V to the USB connector. I attempted to use the faux123 kernel that has options to disable this power to allow host+charging (and my hope was to slow the battery rundown to make it more usable even if I have to shut it off to charge it), but the n7 appears to ignore this and still powers the USB connector.
In this case it most definitely is NOT the IO/USB/headphone assembly inside the unit. At the moment I'm operating on the theory that Asus skimped on protection circuitry in the charge circuit as in my mind this type of damage should never occur when it's properly designed, and I'm presuming the motherboard dead with regards to being a USB device - too bad my warranty is likely up, though I can't check that as it was a gift and all the paperwork is buried in storage. Thankfully it's still capable of fast charging when off, though this doesn't leave me very happy as this also effectively takes away most recovery options if fastboot is the only thing left working.
If I manage to source a replacement mobo I will work on doing a post-mortem and seeing if it's down to a faulty component (I've seen this sort of behaviour before, a pulled up line not getting pulled up, when a filtering capacitor decides to go flakey.) More likely though I'll either sell it, give it away or put it on the junk pile with the rest of the Asus products I've had to retire in the last month due to their questionable customer support (the other products were due to Asus deciding they were "legacy products" and not updating drivers for windows 8/8.1 despite only being 5 years old.)
Nexus 7 not charging/USB not detected while turned on
joeblowma said:
Long story short: plugged the n7 into the car's OEM stereo USB port on a long trip and it registered as a device with the stereo and let me play some music off of it, when I woke up a couple hours later it wouldn't charge.
After a short bit of troubleshooting, I found that OTG devices were still working but it would only charge if I shut it right down - if I start it charging while it's turned off and leave the charger attached while powering it up it's not detected by the software so it never says it's charging, but does still charge - though if at any point I pull the charger from either the n7 or it's supply I have to shut it right down again to get it to charge. Unfortunately, the same can't be said of a PC USB device connection (aside from the charging part of course.)
After a couple weeks using it like this, I got my hands on a multimeter (my stuff is all packed in storage indefinitely or I'd have been replying to this topic sooner) and confirmed that I never register anything beyond a few millivolts on the detect/sense pin (which I find very odd as it's supposed to have a pull-up) with nothing attached to the usb port, and that aside from a short time in fasboot that unless the n7 is powered right off it's trying to supply 5V to the USB connector. I attempted to use the faux123 kernel that has options to disable this power to allow host+charging (and my hope was to slow the battery rundown to make it more usable even if I have to shut it off to charge it), but the n7 appears to ignore this and still powers the USB connector.
In this case it most definitely is NOT the IO/USB/headphone assembly inside the unit. At the moment I'm operating on the theory that Asus skimped on protection circuitry in the charge circuit as in my mind this type of damage should never occur when it's properly designed, and I'm presuming the motherboard dead with regards to being a USB device - too bad my warranty is likely up, though I can't check that as it was a gift and all the paperwork is buried in storage. Thankfully it's still capable of fast charging when off, though this doesn't leave me very happy as this also effectively takes away most recovery options if fastboot is the only thing left working.
If I manage to source a replacement mobo I will work on doing a post-mortem and seeing if it's down to a faulty component (I've seen this sort of behaviour before, a pulled up line not getting pulled up, when a filtering capacitor decides to go flakey.) More likely though I'll either sell it, give it away or put it on the junk pile with the rest of the Asus products I've had to retire in the last month due to their questionable customer support (the other products were due to Asus deciding they were "legacy products" and not updating drivers for windows 8/8.1 despite only being 5 years old.)
Click to expand...
Click to collapse
Very Interesting
I am sure you are right, but I'm not qualified to agree or disagree.
I have had quite a few Asus products in the past and never had any problems.
My Nexus 7 (2012) was also charging properly. I only have the issue that it only charge when turned off AFTER I charged it:
(1) using car charger; and
(2) charge it using official charger but inside a train using train's power plug
So it seems that these devices really need a normal wall-charging paired with official charger.. otherwise, something bad might happen..
Has anyone tried to use Wireless Charger? does it work?

[Q] [MTP ERROR] Phone won't connect to PC

Hey guys!
I picked my G2 up 5 days ago, everything was working fine on day one, however now my phone won't connect to the PC either in MTP or in PTP mode. I looked up all kinds of drivers for this device, installed everything, and it's still not working. When I connect my phone, Windows start to search drivers but does not find any. I have Windows 7 64 bit. Now I can't transfer files to the device, and also, when I try to charge via USB 2.0 or 3.0, it says the voltage level is low, so it charges only on low profile.
Appreciating any help.
Have you tried a different USB cable? That would be the first thing to do. If you're not using the OEM cable (the one that came with it), try that post haste.
If you've already done that, have you tried charging it from the wall with the OEM cable and wall socket box? Does it charge? Is it charging at normal speeds?
And finally, is your phone rooted? Does it have a custom recovery? Is it the stock operating system?
Sent from CAMACHO, my Verizon G2 (VS980) running PAC ROM.
Thanks for the fast answer.
Yes, I do use the OEM cable, the one that was in the box. I am using stock ROM, no tweaks at all. The travel charger is working perfectly, it is charging at normal speed. The intresting thing is that it was working for a few days...
I would recommend using Wi-Fi Transfer, or whatever it's called... The built in system in your Qslide Apps, and backing up everything you can to your computer that way, or backup app info (such as SwiftKey) to its respective cloud system if it supports it, then doing a factory reset.
If it doesn't work after that, try to get it replaced, it should still be within your grace period.
Sent from CAMACHO, my Verizon G2 (VS980) running PAC ROM.
I forgot to test it with another cable. Now I did it with a Samsung Galaxy W U2 cable, and it is working, Windows did automatically install the driver and the MTP is working... Interesting... The stock cable has been working for days, and it still does work with the wall charger perfectly, but not the computer.
Do you prop your phone on your chest when you lay in bed? I used to do that while charging my tablet, which also had the USB port on the bottom. It slowly bent the cable connector from the pressure of the tablet being set on it.
Perhaps you accidentally did something similar? And if so, I recommend getting a custom launcher or something that will give you full orientation control of your phone, then turning it upside down so the charger cable is on the top when plugged in.
Also, I'd take the cord to your carrier store and tell them what's going on. See if you can't get it replaced right away.
Sent from CAMACHO, my Verizon G2 (VS980) running PAC ROM.
No, I haven't charged the phone in bed like that, but if the cable was damaged, shouldn't it have the issue with the wall charger too? Because it works just fine with the wall charger.
Not necessarily. I'm no expert on that, but I imagine there are different wires in the cord for data and electricity. If the data one is busted, that would explain why your computer doesn't recognize it, but it still charges on the wall.
The low voltage error could be a play into that as well if there's some kind of handshake that happens between phone and computer that is not happening because of the damaged data line. My PS3 controller is like that, it will only charge on specific wall chargers because of this handshake feature.
That's just my opinion anyway. Not that it matters at this point, because we have established the cable itself is faulty. Which is good because that's way easier to replace than a whole phone.
Sent from CAMACHO, my Verizon G2 (VS980) running PAC ROM.
Thanks for your help.

[Q] USB OTG + pogo charging

I've seen this question pop up a while ago but it doesn't appear to have been solved. Someone mentioned that the KTManta kernal might have solved this but I couldn't find that answered anywhere in that thread (here). I am using the USB OTG cable to control an IR Droid USB transmitter in a permanent kiosk installation and I need the pogo connector to supply power so this can run 24/7.
Any help is much appreciated!
UPDATE:
Wooo!!! Just thought I'd give the kernel a shot and see what happens... it works! I have a separate USB voltage meter that confirms, as well as seeing the battery % increase while being used, and my IR Droid is also working.
Just install the above mentioned kernel, plug in the USB Y OTG cable into tablet, external power supply to the male USB end of Y adapter, and external device (mine being the IR Droid device) to female USB end. Plug second power supply (I used the 2.4a (12w) iPad charger) into pogo connector. Win.
Ktoonsez, your next few beers are on me, good sir!!
UPDATE: The latest KTManta kernel (04-06-2014) breaks root (SuperSU) with the stock rom. In my case that is v4.4.4 so I've had to revert to my nandroid backup. The issue has been known for a long while but it seems the dev is prioritizing his kernel on other devices. Obviously this means I'll not be testing any time soon.
Interesting, I've wanted this solution for a long time as I use an USB Ethernet adapter from a room with poor WiFi reception. I'll see if it makes any difference if the OTG USB device is attached to a powered USB hub or not and report back.
Sent from my Nexus 10 using XDA Premium HD app
3DSammy said:
UPDATE: The latest KTManta kernel (04-06-2014) breaks root (SuperSU) with the stock rom. In my case that is v4.4.4 so I've had to revert to my nandroid backup. The issue has been known for a long while but it seems the dev is prioritizing his kernel on other devices. Obviously this means I'll not be testing any time soon.
Interesting, I've wanted this solution for a long time as I use an USB Ethernet adapter from a room with poor WiFi reception. I'll see if it makes any difference if the OTG USB device is attached to a powered USB hub or not and report back.
Sent from my Nexus 10 using XDA Premium HD app
Click to expand...
Click to collapse
Oh man, I wish I knew about it breaking root before installing!! I was wondering why it was saying I wasn't rooted... Is there a way to fix root while on this kernel?
I'm having some issues with the tablets now that I didn't have before - the most basic seems that it won't boot (won't even start the Google logo) if I have both OTG device and Pogo connected at same time when the tablet is off. I did solder my own right angle tip onto the OTG Y cable though, so I may have messed something up... I'm going to be doing some more testing over the next couple days and I'll keep this up to date.
"Is there a way to fix root while on this kernel?"
The root issue with KTManta's latest release is specifically with the stock ROM from what I've read in the N10 KTManta thread. So it would seem that installing a non-stock ROM then installing the KTManta kernel would be the only way to get this kernel and root. I'm unwilling to do that for this single feature. There were comments that root was still working on an older KTManta release which if I can remember is from Dec 2013. I've no idea if that release has the charging features you see with the latest release.
If you go the custom ROM route then read the KTManta thread to find out which custom ROM's are working. Don't quote me but I thought the OMNI ROM was one that worked, please confirm that for yourself.
From my experience stock with the XPosed framework is more stable than any custom ROM and I've tried many.
Sent from my Nexus 10 using XDA Premium HD app
So there were a few other issues that I found out while testing...
If you have USB plugged in, then reboot, the tablet freezes while trying to boot. It doesn't even get to the loading screen.
It seems a bit buggy as to when it wants to work and when it doesn't, and all the while the tablet says that it's charging so it is hard to test, but I was using a USB volt meter to see if the pogo was actually taking power or not.
The next thing I want to test is using a powered USB hub, instead of a Y cable. Has anybody done this successfully? Does it need the modified kernel? Does it ACTUALLY charge, or just say that it is?
SupremeTaco said:
The next thing I want to test is using a powered USB hub, instead of a Y cable. Has anybody done this successfully? Does it need the modified kernel? Does it ACTUALLY charge, or just say that it is?
Click to expand...
Click to collapse
I use a powered hub to access an Ethernet adapter while concurrently having the pogo plug attached. The result is that the tablet drains slower as the Ethernet adapter is drawing power from USB Hub rather than the tablet. The tablet does not get charged in anyway despite the false charging icon indicator. This is why your post was so interesting to me until I discovered that root was lost. I can live the charging and OTG limitations but I can't loose root.
Sent from my Nexus 10 using XDA Premium HD app
I tried this the same way as SupremeTaco described.
My nexus 10 runs the latest Omnirom 4.4.4 with latest KTManta kernel.
I plugged in the OTG Y Cable, which was connected to a charger and a usb SD-card reader. Then I plugged in the Pogo charger and to my surprise, the Nexus 10 charges yay! (I saw the battery percentage increase as I was using device with screen on)
SupremeTaco thank you for this great tip, I have been looking for a solution for a long time. I can now charge my Nexus 10 16GB while using a Meenova reader with 64GB microSD card - which is extremely useful :good: :good:
xIsei said:
I tried this the same way as SupremeTaco described.
My nexus 10 runs the latest Omnirom 4.4.4 with latest KTManta kernel.
I plugged in the OTG Y Cable, which was connected to a charger and a usb SD-card reader. Then I plugged in the Pogo charger and to my surprise, the Nexus 10 charges yay! (I saw the battery percentage increase as I was using device with screen on)
SupremeTaco thank you for this great tip, I have been looking for a solution for a long time. I can now charge my Nexus 10 16GB while using a Meenova reader with 64GB microSD card - which is extremely useful :good: :good:
Click to expand...
Click to collapse
I'm glad it helped! But be careful as you may have issues booting with the USB plugged in. Let me know if this does happen to you... it may just be the version of the kernel I was using but I gave up and am looking for another solution at this point, since I must leave the USB plugged in 24/7
Pogo works great
Should have bought one earliar
Pogo works great
Should have bought one earliar
SupremeTaco said:
I'm glad it helped! But be careful as you may have issues booting with the USB plugged in. Let me know if this does happen to you... it may just be the version of the kernel I was using but I gave up and am looking for another solution at this point, since I must leave the USB plugged in 24/7
Click to expand...
Click to collapse
Sorry for the slow response,
I did some testing with both KTManta kernel and the stock Omnirom kernel and indeed booting with USB plugged in does not work. The culprit seems to be the OTG Y-Cable and specifically the power supply part. If you disconnect power from the Y cable but leave everything else plugged into the tablet, the tablet will boot. Perhaps you could have a power switch for the Y-cable and switch it off only when booting?
Also, I have discovered that Pogo charging with Y-cable also works on stock Omnirom kernel. So it seems that the kernel does not affect the charging capability with this setup in anyway, so we are not limited to using KTManta. However the booting issue does not seem to be a kernel-related problem.
Edit: I also confirmed charging in this way works with franco kernel r16 (so it will probably work with all other franco kernels and any other custom kernel)

Problem recognizing charging, headset, and PC connection

Hello boys! I have a very serious problem with my LE PRO 3. Since yesterday, the following is happening BUG: When I connect the charger, it does not load immediately. It only loads if I reboot the device. And if I take it out and put it back, it stops loading again. This also happens when I connect to the PC. The device only recognizes if I leave the cable connected and restart. With the headset the same thing. It only recognizes if I leave it connected and restart the device. I'm on the Cydrass Google edition ROM, and my device is the x720 version. I have already switched to other ROMs (LineageOs, Ressuection Remix, and even the Chinese STOCK ROM 26s, and the problem still persists!) Apparently it's a serious problem recognizing my USB port I do not know what else to do! Please, help me!
even first buy , do you have problem ?
To Vitor_147
Remember, if you change the stock original LeEco rom you cannot say "have a problem with my LePro3", it's no longer the original combo "LePro3" (hardware + software) so expect (and accept) anything (better or worse!) and report the defects to the rom developer.
Now some helping things!
Apart to clean the phone usb c port and to try a new usb cable, you can:
With the usb cable connected, switch the usb debug off (or on) (developer options) then check if your computer detect your phone.
Even if your computer doesn't detect the phone or your phone seems not charging battery, if the usb cable (and charger) is good in 99% of the cases it charges the battery even if not at full charge rate (expect a minimum 4 hours charge time).
Before to give up, the last try is to bring your phone back to factory conditions with everything (but everything!) under the exact conditions of how it came out of the factory, then you can start over there and have an idea of whether the phone has a hardware defect or if it's just a matter of software.
I hope you solve the problem, if you find the right solution please report it here, so other users can learn how to solve this problem! Cheers!
orsonbear said:
To Vitor_147
Remember, if you change the stock original LeEco rom you cannot say "have a problem with my LePro3", it's no longer the original combo "LePro3" (hardware + software) so expect (and accept) anything (better or worse!) and report the defects to the rom developer.
Now some helping things!
Apart to clean the phone usb c port and to try a new usb cable, you can:
With the usb cable connected, switch the usb debug off (or on) (developer options) then check if your computer detect your phone.
Even if your computer doesn't detect the phone or your phone seems not charging battery, if the usb cable (and charger) is good in 99% of the cases it charges the battery even if not at full charge rate (expect a minimum 4 hours charge time).
Before to give up, the last try is to bring your phone back to factory conditions with everything (but everything!) under the exact conditions of how it came out of the factory, then you can start over there and have an idea of whether the phone has a hardware defect or if it's just a matter of software.
I hope you solve the problem, if you find the right solution please report it here, so other users can learn how to solve this problem! Cheers!
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Click to collapse
I already wrote this up in Omni thread, so I'll keep it short. I've also been experiencing this same issue for a while now, it first happened on stock rom, reboot solves it. Darko tried a fix in his eas kernel, seems to fix it (so maybe somehow kernel related). I believe it might be somehow related to the usb-c controller, cause I found cases online of similar issues with pixel phones (i believe the controller manufacturer is the same as in our phones). I actually know the exact moment when my problems first began, after I used my OTG adapter to connect a usb mouse. Few hours after that, the phone wouldnt charge.
{Disclaimer - this part is purely my theory}
I think it maybe somehow related to a safety "switch/fuse" of sorts, or something to do with static discharge or something similar, and here's why. I did a loot of trial and error since the first time it happened to me cause it scared the sh*t outta me, thinkin my phone is broken. I am vigilant about careful handling of usb ports and such, (ocd-ish really) so theres no way I physically damaged it, its not loose one bit, cleaned it out, tried wiggling the cable around anyway, has no effect, so I excluded the possibility of a faulty port/soldering. A few occurences to note
No1 - if I plug my phone in the charger first, and then plug the charger in the outlet, it breaks the port, I have to reboot to fix it. But plug the charger in the outlet first, then the cable to the phone - no problem. (Static discharge of sorts?)
No2 - since it started happening, the only way my usb-c OTG adapter works is if i first plug the adapter in the phone, and then the desired usb device in the adapter. If i try to plug the adapter in the phone w/say a usb stick already connected to it - no go, doesnt work.
Oh... I'm sorry for what happens to your phone! It's true the safest way to charge a phone avoiding current surge/spikes/shocks is to plug first the charger to AC outlet, then the usb c plug to the phone, then the usb plug to the charger. If possible, never plug/unplug the charger to/from the AC outlet if the phone is connected to the charger.
When the phone is full charged, first unplug the cable, not important which side first, then unplug the charger. If the phone is still charging, better unplug first the cable from the charger side to avoid micro spikes on the usb c port.
If you cannot obtain a normal behavior of the usb c port neither with reflashing the phone with the "qfil" system, perhaps a logic port of the usb c port is burned or simply in undetermined state, in the last case a total battery discharge may reset the logic port state and the phone can works fine once fully recharged. I'm sorry I can't help you better at this time! Cheers!
Sent from my LEX720 using XDA Labs
@orsonbear, thats my train of thought aswell, micro discharges occuring while plugging/unplugging causing the controller to freak out, or potentially damage the tiny connections (micro usb only had 4 wires vs 24! in usb-c). But I believe the problem lies somewhere on the software/firmware side, mainly because a reboot solves any issue I have. And also I just remembered, the first time it happened to me was a couple of days after I updated my firmware while updating to 19s, or 20s, cant recall precisely. Anywho, for me it's a minor nuissance, not like the OP who can only connect his phone once before rebooting (I can go for weeks before it occurs).
orsonbear said:
Oh... I'm sorry for what happens to your phone! It's true the safest way to charge a phone avoiding current surge/spikes/shocks is to plug first the charger to AC outlet, then the usb c plug to the phone, then the usb plug to the charger. If possible, never plug/unplug the charger to/from the AC outlet if the phone is connected to the charger.
When the phone is full charged, first unplug the cable, not important which side first, then unplug the charger. If the phone is still charging, better unplug first the cable from the charger side to avoid micro spikes on the usb c port.
If you cannot obtain a normal behavior of the usb c port neither with reflashing the phone with the "qfil" system, perhaps a logic port of the usb c port is burned or simply in indeterminated state, in the last case a total battery discharge may reset the logic port state and the phone can works fine once fully recharged. I'm sorry I can't help you better at this time! Cheers!
Sent from my LEX720 using XDA Labs
Click to expand...
Click to collapse
Yes,
I thought about letting the phone down completely, and see if that does not happen anymore!
Same problem here
Days ago it start happen, exactly how you say, i never change the stock software and it start happen randomly, I have to reboot to recognize anything that I plug into the USB c port, I try factory reset and change from 26s to 23s and it keeps happening so maybe I'm pretty ****ed, someone help me, in my country no one will fix the port u.u (sorry for my English).
Hellao! I'm having a very similar issue, charging works fine and the pc detects the phone but OTG and the audio on my headset is not working. Did someone of you find a solution to this problem?
1. x720, x722 or x727?
2. Where did you buy the phones? (Store names)
3. What kind of USB-C cable were you using? The one that came in the box? Have you used other USB-C cables and adapters to see if it works?
This could be hardware failure due to a lack of QCing from LeEco (just your average hardware issue) or a USB-C cable issue. It's ver. 1.0 on all LeEco Pro 3 models (right)? So I can't say it's the cable for sure. Has anyone attempted to take the phone apart to replace the port? do they even sell the port replacement?
Similar problem for me. About a month ago my headset stop working and the phone did not recognize it at all, tried with the adaptor to 3,5 mm jack and did not work either. Charging worked though.
Found a replacement chip with usb c port and ordered. Yesterday i replaced the charging port, but still the headset do not work at all, and connection to PC does not work ether. Charging still works as usual.
I ordered the phone from grossoshop 7 month ago with their rom. Tried this evening to upgrade the rom from 5.8.018 to 5.9.020, still grossoshop but no difference... It should not be a hardware problem as i replaced the type c port.
Should i try to flash another rom to see if there's any difference?
Any other suggestions?
Thankful for any ideas
Linkan78 said:
Similar problem for me. About a month ago my headset stop working and the phone did not recognize it at all, tried with the adaptor to 3,5 mm jack and did not work either. Charging worked though.
Found a replacement chip with usb c port and ordered. Yesterday i replaced the charging port, but still the headset do not work at all, and connection to PC does not work ether. Charging still works as usual.
I ordered the phone from grossoshop 7 month ago with their rom. Tried this evening to upgrade the rom from 5.8.018 to 5.9.020, still grossoshop but no difference... It should not be a hardware problem as i replaced the type c port.
Should i try to flash another rom to see if there's any difference?
Any other suggestions?
Thankful for any ideas
Click to expand...
Click to collapse
Have you tried switching cables? Could you have broken a contact or something while swapping the port out? Have you tried putting the old port back in to see if the computer recognizes the phone with it? Unfortunately you're gonna have to try everything, even if opening it back up again is tough. LeEco phones aren't exactly known for their build quality. Are you x720? Well, flash whatever ROMs you can, I guess. Might as well try everything.
sk8223 said:
Have you tried switching cables? Could you have broken a contact or something while swapping the port out? Have you tried putting the old port back in to see if the computer recognizes the phone with it? Unfortunately you're gonna have to try everything, even if opening it back up again is tough. LeEco phones aren't exactly known for their build quality. Are you x720? Well, flash whatever ROMs you can, I guess. Might as well try everything.
Click to expand...
Click to collapse
Yes, I have tried to switch the cables so no problem with them. Have not done a swap back again as the problem seem to be similar as before, so maybe a change to a different rom will be the next step for me. If change of rom does not work, maybe then I'll try to swap port again.
And yes, It's a X720
Thanks for fast reply.
Linkan78 said:
Yes, I have tried to switch the cables so no problem with them. Have not done a swap back again as the problem seem to be similar as before, so maybe a change to a different rom will be the next step for me. If change of rom does not work, maybe then I'll try to swap port again.
And yes, It's a X720
Thanks for fast reply.
Click to expand...
Click to collapse
Maybe it's not plugged in or attached correctly so the phone doesn't detect it. Sounds like a hardware issue to me, in all honesty. I once took apart my iPhone 5 to replace the non-functional home button and it wouldn't work no matter what I tried. I had to remove the battery, reseat it, and then attach the home button again. It finally worked after a reboot.
just report in on this thread, I as well recently purchased an x727 experienced the similar issue. Basically as described above no matter what roms i test is always have some sort of camera errors when charging.
sometimes charging doesn't work or camera doesn't work I have to reboot to get it to work. extremely annoying. I think it is hardware related.
Anybody else have a solution?
blanktape said:
just report in on this thread, I as well recently purchased an x727 experienced the similar issue. Basically as described above no matter what roms i test is always have some sort of camera errors when charging.
sometimes charging doesn't work or camera doesn't work I have to reboot to get it to work. extremely annoying. I think it is hardware related.
Anybody else have a solution?
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Click to collapse
i got charging problem dude after second day of use just got it last night x727.ffs.
i replace the usb board and the problem persist, i don't know what to do anymore, if someone has passed this problem please speak I am about to smash this damn bugged phone
Anthp said:
i replace the usb board and the problem persist, i don't know what to do anymore, if someone has passed this problem please speak I am about to smash this damn bugged phone
Click to expand...
Click to collapse
This my advice to anybody considering buying this phone don't why you will get zero support from letv.
I got luckey I have zero problems with phone .
I recommend spending more money and getting a supported phone by the maker.
If you do buy one buy it from Amazon where get a warranty on it.
Sent from my LEX727 using xda premium
Somebody fixed thuis allready as my le2 x626 only detects charging by USB when in fact its connected to the AC adapter.
And extremly slow charging from 9 to 100 % more then ó hours.
Also the phone`s microphone is nog working at all!! And the headphone is nog working!
please help

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