Fast charge mode - Nexus 7 Q&A, Help & Troubleshooting

Hi! I'm on 4.1.2 Slim rom and when I try to put n7 in fast charge mode....it won't stay. I go back into settings and its unchecked again.
I googled issue, but as soon as you use fast charge in search....all I get are tonnes of charging issues unrelated to my issue.
Thanks for any input.
Sent from my cell phone telephone....

Related

[Q] evo charge issue

my evo will not stop charging when disconnected from charger and wont connect to comp pleas help need to fix asap
What Rom are you running ? What Recovery are you using ? What Kernel are you using ? You said it will not connect to the computer. Have you Updated HTC Sync ?
Not charging while phone is on..
Hi guys,
I am facing a very unique issue(basically i didnt find any thread which had the same problem as mine). My Evo does not charge while the phone is switched on nor can i connect it to my comp from the recovery after i mount it in usb mode. It charges properly while it is powered off. I have tried installing jellybread & mokeeos roms with tiamat kernel but they go into boot loop.
It is really inconvenient since i have to switch off the phone for it to charge. Please help.
The details of the system are below:
RoM: rooted stock rom from xda thread (http://forum.xda-developers.com/wiki/HTC_Evo/ROMs)
the kernel is also stock
I am using Amon Ra recovery 3.11
Please do help me out with this.
I figure its a software problem since it is charging properly when switched off.
Are you Full Root "S-off" ? Have you tried using a different charger / cable combo ?
TEAM MiK
MikROMs Since 3/13/11
evo charge issues
Yes, My phone is fully rooted and s-off.
also i have tried using several charger, cable combos.
When it is in fastboot, i can flash files, threre is not problem there, but when I turn on USB mode in the recovery, it does not detect on the computer.
Also It charges when off, but does not when fully switched on. 1 thing that i now noticed was that sometimes, it starts charging when switched on, and then stops after 1 minute or so.
Also the battery drains extremely quickly now. This was not the case before this happened.
It would be great if you could help me out here,
israfild said:
Yes, My phone is fully rooted and s-off.
also i have tried using several charger, cable combos.
When it is in fastboot, i can flash files, threre is not problem there, but when I turn on USB mode in the recovery, it does not detect on the computer.
Also It charges when off, but does not when fully switched on. 1 thing that i now noticed was that sometimes, it starts charging when switched on, and then stops after 1 minute or so.
Also the battery drains extremely quickly now. This was not the case before this happened.
It would be great if you could help me out here,
Click to expand...
Click to collapse
Sounds like a bad battery or bad charging port... cheapest way to test is to buy a battery from ebay or something. See what happens. If the same problem persists its a hardware issue with the port itself (which I think it is from the sounds of it). Or you can unroot it, load a stock Sense rom and go to a Sprint store to have them look at it.
You can also try cleaning the Charger port itself out. I've issues in the past with charger ports getting dirty, which causes a bad connection. But I would still defiantly try a different Battery.
thanks guys, will clean the port and also try a new battery...
will get back once i have done these...

[Q] Charging Problem - Verizon xt907

Trying to fix a family members xt907 so here's the situation which has been nothing but headaches for me:
1. The Phone is only 7 months old and the bootloader is unlocked so warranty exchange is out of the question. She let the battery run down until the phone died. Then without charging the phone she turned it back on and it died again. From that point she couldn't get it to charge or turn back on while plugged in. At this point she brought it to me.
2. I got the phone and did a soft reset which finally got the charging screen to come up (showed the actual charging icon and the fill meter would flash up and then back down periodically). Problem is it never went past 0% after charging all night. I went ahead and tried to power it up thinking maybe it was just a glitch with the charging screen. Phone wouldnt boot. Just stuck at the Motorola logo. Another soft reset and the phone finally boots but now the battery icon showed a '?' and status showed '5% - Unknown'.
3. Performed a factory reset. No change. So I used RSD to flash the stock 4.1.2 firmware/kernel/modem, etc... What I found strange here is that despite the low battery Fastboot AP showed battery as OK, not low and let me flash (bootloader is unlocked, not sure if that affects low battery flashing or if that safeguard just wasnt built into the M).
4. So phone boots back up and shows 7% battery. Plugging in the charger at first notice has no affect. Battery stats shows '7% - Not Charging'. So I unplug the charger and the low battery warning pops up. Plug it back in and phone still doesnt register as charging, but says 'Not Charging'. Then I notice that the lockscreen shows '7% Charging'. Weird. Regardless of all that, the battery was not charging. The percentage never goes up and after reboots the percentage will remain the same. The battery does slowly discharge on the charger if I have it powered on.
5. I tried flashing a couple different roms before flashing back to stock and all had the same problem. I've formated /system hoping it was a problem with the OS but it didnt help. All of these charging tests were performed with the stock Motorola usb cable plugged into the wall charger. I tested the Motorola charger against my S4 to verify it works and also tried my Samsung charger on the Razr and it made no difference. However, booting the Razr M up with the Samsung charger resulted in the '?' in the battery icon and a notification in the status bar saying something about a CommServer starting. This notification was persistant and could not be dismissed. If I reboot the phone with the Motorola charger or no charger then that notification and the '?' dont appear.
6. I should also point out that I opened the phone up and disconnected the battery from the board and discharged the board. As a last resort I completely removed the battery and peeled back the tape on the bottom of the battery to expose the + and - terminals on the battery and wired it up to a stripped down charger and left it for a bit. Upon putting the battery back in the phone it showed a charge of 30% but still had all the same problems otherwise. So the battery is capable of taking a charge, it just wont take it through the phone, whether powered on or off. Thats what leads me to believe the battery itself is not bad. Its not practical for her to pull the battery to charge it, obviously. The phone detects the cable being plugged in and I can transfer files via usb cable to/from the computer no problem, so I'm fairly sure the Micro usb port is ok. Just refuses to charge.
A little lengthy but I'm at my wits end on this and really dont want to have her buy a $50 battery and then its a problem with the phone. I dont usually get stumped when it comes to fixing something but this one really has me. So if anybody can shed some light on this situation it would be greatly appreciated.
CallMeAria said:
Trying to fix a family members xt907 so here's the situation which has been nothing but headaches for me:
1. The Phone is only 7 months old and the bootloader is unlocked so warranty exchange is out of the question. She let the battery run down until the phone died. Then without charging the phone she turned it back on and it died again. From that point she couldn't get it to charge or turn back on while plugged in. At this point she brought it to me.
2. I got the phone and did a soft reset which finally got the charging screen to come up (showed the actual charging icon and the fill meter would flash up and then back down periodically). Problem is it never went past 0% after charging all night. I went ahead and tried to power it up thinking maybe it was just a glitch with the charging screen. Phone wouldnt boot. Just stuck at the Motorola logo. Another soft reset and the phone finally boots but now the battery icon showed a '?' and status showed '5% - Unknown'.
3. Performed a factory reset. No change. So I used RSD to flash the stock 4.1.2 firmware/kernel/modem, etc... What I found strange here is that despite the low battery Fastboot AP showed battery as OK, not low and let me flash (bootloader is unlocked, not sure if that affects low battery flashing or if that safeguard just wasnt built into the M).
4. So phone boots back up and shows 7% battery. Plugging in the charger at first notice has no affect. Battery stats shows '7% - Not Charging'. So I unplug the charger and the low battery warning pops up. Plug it back in and phone still doesnt register as charging, but says 'Not Charging'. Then I notice that the lockscreen shows '7% Charging'. Weird. Regardless of all that, the battery was not charging. The percentage never goes up and after reboots the percentage will remain the same. The battery does slowly discharge on the charger if I have it powered on.
5. I tried flashing a couple different roms before flashing back to stock and all had the same problem. I've formated /system hoping it was a problem with the OS but it didnt help. All of these charging tests were performed with the stock Motorola usb cable plugged into the wall charger. I tested the Motorola charger against my S4 to verify it works and also tried my Samsung charger on the Razr and it made no difference. However, booting the Razr M up with the Samsung charger resulted in the '?' in the battery icon and a notification in the status bar saying something about a CommServer starting. This notification was persistant and could not be dismissed. If I reboot the phone with the Motorola charger or no charger then that notification and the '?' dont appear.
6. I should also point out that I opened the phone up and disconnected the battery from the board and discharged the board. As a last resort I completely removed the battery and peeled back the tape on the bottom of the battery to expose the + and - terminals on the battery and wired it up to a stripped down charger and left it for a bit. Upon putting the battery back in the phone it showed a charge of 30% but still had all the same problems otherwise. So the battery is capable of taking a charge, it just wont take it through the phone, whether powered on or off. Thats what leads me to believe the battery itself is not bad. Its not practical for her to pull the battery to charge it, obviously. The phone detects the cable being plugged in and I can transfer files via usb cable to/from the computer no problem, so I'm fairly sure the Micro usb port is ok. Just refuses to charge.
A little lengthy but I'm at my wits end on this and really dont want to have her buy a $50 battery and then its a problem with the phone. I dont usually get stumped when it comes to fixing something but this one really has me. So if anybody can shed some light on this situation it would be greatly appreciated.
Click to expand...
Click to collapse
I presumed you tried to wipe the battery stats via the battery calibration app? not that I think it would make a difference. another option is enable/disable USB debugging. you could also try charging into a PC or a different outlet (perhaps that outlet does not provide a good current)?
not really sure, just tossing out some ideas...
jco23 said:
I presumed you tried to wipe the battery stats via the battery calibration app? not that I think it would make a difference. another option is enable/disable USB debugging. you could also try charging into a PC or a different outlet (perhaps that outlet does not provide a good current)?
not really sure, just tossing out some ideas...
Click to expand...
Click to collapse
I actually installed cwm recovery just to wipe battery stats. Im assuming it works the same way but I'll give the app a try. I'll try anything at this point. Tried your other ideas already though and didnt make any difference.
I appreciate the input. I'll give that app a try and see if it does something different from wiping battery stats in recovery.
CallMeAria said:
I actually installed cwm recovery just to wipe battery stats. Im assuming it works the same way but I'll give the app a try. I'll try anything at this point. Tried your other ideas already though and didnt make any difference.
I appreciate the input. I'll give that app a try and see if it does something different from wiping battery stats in recovery.
Click to expand...
Click to collapse
Doubt it. However, the issue seems to be with the hardware, and since it is not a software issue, Motorola could honor the warranty. Last resort would be to unroot and see if you can get an exchange.
Sent from my XT907 using xda app-developers app
have you tried a non moto cable? the one that came with my fone was total crap, would continuously connect and disconnect when i hooked it up to my comp or try to charge it, so i tried my old samsung cable and i didnt have any disconnect problems at all. just a suggestion
CallMeAria said:
I actually installed cwm recovery just to wipe battery stats. Im assuming it works the same way but I'll give the app a try. I'll try anything at this point. Tried your other ideas already though and didnt make any difference.
I appreciate the input. I'll give that app a try and see if it does something different from wiping battery stats in recovery.
Click to expand...
Click to collapse
Did you ever find a solution? I am having the same issues with my xt907.
What did you have it plugged in to? The fact that it said it was not charging indicates maybe you didn't have enough power coming through the charging port...
Sent from my XT907 using Tapatalk 4 Beta
uthkuknwme said:
have you tried a non moto cable? the one that came with my fone was total crap, would continuously connect and disconnect when i hooked it up to my comp or try to charge it, so i tried my old samsung cable and i didnt have any disconnect problems at all. just a suggestion
Click to expand...
Click to collapse
yeah I tried my Samsung cable as well.
jgramkow said:
Did you ever find a solution? I am having the same issues with my xt907.
Click to expand...
Click to collapse
No. Verizon finally sent her a refurb replacement. I got the battery to charge up by taking it out and rigging a charger to it. But the phone still wouldnt accept a charge with the battery back in and it lost the charge it did have 2-3 times faster than normal. Battery Stats also showed the battery was showing a pretty decent voltage so unless the battery itself has a low charge circuit that gets tripped I'd be hesitant to point to the battery itself. And the charger port transfered files just fine and the phone recognized when the charger was plugged in (would go from 'discharging' to 'not charging'. So yeah, I was left stumped. Hopefully somebody else can get this solved for you.
CallMeAria said:
yeah I tried my Samsung cable as well.
No. Verizon finally sent her a refurb replacement. I got the battery to charge up by taking it out and rigging a charger to it. But the phone still wouldnt accept a charge with the battery back in and it lost the charge it did have 2-3 times faster than normal. Battery Stats also showed the battery was showing a pretty decent voltage so unless the battery itself has a low charge circuit that gets tripped I'd be hesitant to point to the battery itself. And the charger port transfered files just fine and the phone recognized when the charger was plugged in (would go from 'discharging' to 'not charging'. So yeah, I was left stumped. Hopefully somebody else can get this solved for you.
Click to expand...
Click to collapse
Just an update: I ended up buying a replacement battery and it fixed the charging issue. I rsd back to stock. Then, playing around with it, I booted to bootloader and selected "Factory" and it immediately booted back to stock, but, the battery had a "?" again. Ready to throw the damn phone against the wall, I rebooted it. The "?" is mysteriously gone. What is the "Factory" setting? I think I tried it before, but had CM10.1 installed. My theory is that this "factory" boot from bootloader actually soft bricked the phone. Either that or the issue was truly the battery and simply replacing it fixed things. I am up and running now, cm10.1 is flawless, imho. Thanks for the quick reply and I hope this helps anyone with similar issues.
Beware of the "Factory" bootloader option...........
Here we go again. Upon a reboot into recovery. Recovery is twrp 2.5. What I notice is the motorola boot img takes an extremely long time (2 minutes) to turn off and cyanogenmod to begin. Could there be something corrupt in the bootloader? Is there any way to reload the bootloader on this device? Anyone have any ideas? Could it be Recovery?

Lenovo K4 note Charging Problem

Hi,
recently I am experiencing this deadly problem .
my battery drains completely to the amount that phone can't even boot . biggest problem is that its like phone is not accepting charge . after it loses all the charge,it turns off . when I connect charger it vibrates randomly . it feels like battery doesn't even have the charge to load that Lenovo battery charging animation page(while switched off ). phone goes to soft brick stage .after a few vibrations(I think phone is vibrating one time before loading battery charging page ,phone can't even load that charging page ,may be due to very low charge .so it vibrates and attempts to load battery charging page,and it goes off . again vibrates... somehow it recovers from the loop after some time )it loads battery charging page , and would stuck at 2%,or 8% etc... after long some 6-8 hours phone regains control and charge normally and everything coming to normal .I can't figure out what this problem is . only thing I figured out is that this happens when phone reaches a certain low battery percentage like below 20% .
after that phone will not accept charge until it goes off and all the above things ...
pls someone look into this matter ,may be someone else might have experienced this or someone can give me a clue
This problem has been faced by many users, including me. I thought it was only me, until one of my friends faced it too. Apparently, there might be a problem with battery stats. If you charge when it is fully drained, It will vibrate a few times. This happens because, the phone always keeps 2% of battery for the offline charging screen to load(the charging screen while off). But when the phone's battery is fully drained to 0% then it will vibrate and stays like that before it can switch on. So to solve this, charge the phone and leave it like that until its fully charged or like when you feel it is stuck(while the phone is switched off only). Then switch it on, and fully drain it again. Now once again charge the phone and leave it. Then drain. Do not remove until the phone until it shows 100%. Repeat this few times. This is actually to calibrate the battery stats. Now you'll see that battery charges properly.
PraneethMv said:
This problem has been faced by many users, including me. I thought it was only me, until one of my friends faced it too. Apparently, there might be a problem with battery stats. If you charge when it is fully drained, It will vibrate a few times. This happens because, the phone always keeps 2% of battery for the offline charging screen to load(the charging screen while off). But when the phone's battery is fully drained to 0% then it will vibrate and stays like that before it can switch on. So to solve this, charge the phone and leave it like that until its fully charged or like when you feel it is stuck(while the phone is switched off only). Then switch it on, and fully drain it again. Now once again charge the phone and leave it. Then drain. Do not remove until the phone until it shows 100%. Repeat this few times. This is actually to calibrate the battery stats. Now you'll see that battery charges properly.
Click to expand...
Click to collapse
thanks @PraneethMv for the quick reply . I'll try this .
actually feeling relaxed :good:
shejin1990 said:
thanks @PraneethMv for the quick reply . I'll try this .
actually feeling relaxed :good:
Click to expand...
Click to collapse
Are you on stock or custom rom? If you are on custom rom, you can enable usb fast charging and charge it with computer. It helped me.
PraneethMv said:
Are you on stock or custom rom? If you are on custom rom, you can enable usb fast charging and charge it with computer. It helped me.
Click to expand...
Click to collapse
i've tested most of the ROMs out here . thought it could be a ROM related issue . macblaze,mohancm,zormax ROMs . currently on zormax's Lineage OS 13 (Marshmallow) . which one to you prefer?
shejin1990 said:
i've tested most of the ROMs out here . thought it could be a ROM related issue . macblaze,mohancm,zormax ROMs . currently on zormax's Lineage OS 13 (Marshmallow) . which one to you prefer?
Click to expand...
Click to collapse
No. It's not rom related issue. Each rom has some unique capability. Any rom is good. You can use Kernel Auditor to enable usb fast charge and charge the phone with any computer. This will work on any rom which has a kernel which supports usb fast charge
hii, guys i have problem too, unfortunately from yesterday, my phone doesn't charge but it is charging but not showing, it stucks to 42% and usb/Mtp is not recognized after plugin to pc.. i had shown all by pc side there is no problem in my pc but there is problem resides in my phone by the way i am on stock rom, pls help guyss to get rid out of this. I have done everything restart, reset but things aren't my side, i think this is hardware problem. i
I had same issue.....how did u recovered from that.....plzzz reply ....
Sorry to bring the old thread up, but I also have this issue out of the sudden. Is there any fix?
stormeye25 said:
Sorry to bring the old thread up, but I also have this issue out of the sudden. Is there any fix?
Click to expand...
Click to collapse
I could really use it... can't figure it out
Help?

Lost fast charge sometimes after oreo crd7

hello. after the update, sometimes the phone doesn't charge fast. normal and slow charge with cable or with wireless. if i reboot phone the charge come back fast. why this problem and is it solvable? thanks
Hello, when you go settings>device managment>battery>advances settings> the fast cable charging option is on or off? try to change from on to off or the opposite and restart your phone . might you have a custom rom that has that bug , or a custom kernel.

Wtt8047 not turning On

I am in PE latest build & today I tried to switch it on it doesn't turned on even I connected to charger it doesn't turned on also! Any idea to solve this!!
Advance thanks!
Try to check if it switches on with another battery.
Try replacing the battery. I have the same issue too, it might be the cap blow up overnight or the battery is bad. Mine is fixed after a battery replacement.

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