Database Users

[Q] no sim detected

Hi guys im having problem with s4 i337 i do factory reset and now no detected sim when i try to make a call it say network mobile not available, i check the imei and already have it i cant navegate with wifi, only no detected sim card, i check service mode and its empty, the efs folder with es explorer file and its empty too, the cellphone have stock rom without root, i have any possibilities to fix that?? sorry for my english, Im from El Salvador.
Thanks.
Edit: i root my device and use root browser to see efs folder contain and thats it (images)
is missed some archives?

nobody have any idea????
the efs folder is corrupt??
please any suggestion i really appreciated it

EFS only affects IMEI and things like that, it has nothing to do with your SIM card
check the card itself first, it might be damaged, if you have some spare phone test it
if the card is fine check the SIM tray
if it's also fine then it's either an internal circuitry problem or software-related
EDIT: some custom kernels have SIM disconnection problems, but I assume you are on the stock one
try changing kernel, that might work
and by the way, if the EFS was corrupt, you would be left without IMEI, maybe your phone ain't booting at all, plus you would have never been able to check its contents with a file manager

SuicideFlasher said:
EFS only affects IMEI and things like that, it has nothing to do with your SIM card
check the card itself first, it might be damaged, if you have some spare phone test it
if the card is fine check the SIM tray
if it's also fine then it's either an internal circuitry problem or software-related
EDIT: some custom kernels have SIM disconnection problems, but I assume you are on the stock one
try changing kernel, that might work
and by the way, if the EFS was corrupt, you would be left without IMEI, maybe your phone ain't booting at all, plus you would have never been able to check its contents with a file manager
Click to expand...
Click to collapse
Thanks for the reply but service mode is empty with or without sim card

dh4 said:
Thanks for the reply but service mode is empty with or without sim card
Click to expand...
Click to collapse
Have you examined your APN and read all about what is valid for your handset?
Settings connections morenetworks mobile networks access point names
mine has ATT Phone lit up
---------- Post added at 10:45 PM ---------- Previous post was at 10:40 PM ----------
also I've taken apart my S4 and replaced the SIM/SD tray to no avail
tried tape on the sim chip to make it thicker
no luck
What did seem to work (still testing, so far so good) was peeling the phone apart again, all nine screws, and broken finger nails, and I unplugged the connector from the new SIM/SD tray and plugged it back in. This time I got a very positive click. Make sure and get your gigantic finger square over that tiny plug and after it's lined up do your best to press it straight down.
Seriously. I got a good click this last go around and it seems to be doing the trick. My S4 was run over in the street and it is only still alive because of otterbox.
---------- Post added at 10:50 PM ---------- Previous post was at 10:45 PM ----------
Remove the back cover, battery, SD card, and SIM chip.
Take out all nine screws with a tiny Philips head.
If you don't want to break finger nails use a guitar pick and peel the glass edge away from the chrome side bar all the way around.
Pop the plug off the tiny ribbon cable from your SIM/SD tray from it's place on the motherboard with your fingernail.
Plug it back in as square and straight down as possible.
Reassemble. Make sure all nine screws are all the way down as if some aren't screwed in all the way the back cover won't fit tight.

Yes man sometimes only has 1 bar but only during about 30 minutes

Nook won't turn on....

"Your NOOK has turned off completely."
Yikes. So today I discovered there was something wrong with my NookManager SD card when my computer would not read it. I reformatted and wrote a fresh image and then wanted to make a backup (since the previous one was lost). I shut off my Nook without any problem.
But I nearly could not get it to come back on! And I never have succeeded in getting it back on (only twice so far) with the SD card in, so I haven't been able to do a back up {smoke comes out of ears!}. It is fully charged.
I've always thought the switch on the back was a little wonky but this is so sudden and, of course, at the worst possible juncture. Is there something I could have done in the system which would make the Nook difficult to turn on? Or is my number simply up and the power switch is all-but failing?
ADD: I just popped the SD card out for a sec and tried again and it came on almost on the first try. It reads the normal SD card just fine (where books and such are stored). Can there really be something with the NM SD card that is keeping the device from turning on? I just tried again with the storage SD card in place and the Nook started up once again without problem... And now it won't....has to be the switch?
EDIT: It's got to be the $#%& switch. I finally got it to come on with the NM SD card inserted and did a backup--which I copied over to my laptop. I tried invoking a reboot via wireless ADB with the NM SD card inserted to see if a warm boot was sufficient to the task. It worked! I may never turn off my Nook again.

nmyshkin said:
EDIT: It's got to be the $#%& switch. I finally got it to come on with the NM SD card inserted and did a backup--which I copied over to my laptop. I tried invoking a reboot via wireless ADB with the NM SD card inserted to see if a warm boot was sufficient to the task. It worked! I may never turn off my Nook again.
Click to expand...
Click to collapse
I had a similar problem when my Nook was almost brand new, I came to the conclusion that it was a problem with the way the microSD card was inserted, it wasn't right somehow. I had problems when I first had the NST with getting it to work with a card inserted. SO, there may in fact be an issue with your card.
That said, now that I have had my Nook for a while, and made much use of the on/off button, I do indeed have issues with it. I practically have to grip it with visegrips to get it to do anything. I plan to remove the plastic button and investigate further soon, I will try to let you know what, if anything, I find out when I do.
I do already know that it is a more or less typical metal dome.button switch I suspect it has become deformed with use.
More when I have details/proof.
MildBill
---------- Post added at 04:25 PM ---------- Previous post was at 03:42 PM ----------
MildBill said:
I do already know that it is a more or less typical metal dome.button switch I suspect it has become deformed with use.
More when I have details/proof.
MildBill
Click to expand...
Click to collapse
Well... Color me embarrassed...
It is, in fact, a sealed solder-mounted part, probably containing the above type dome/button, but it is a discrete part. At least on my NST.
I did, however, find that the screw just above it, that holds the case back in place (it slides off once the screw (AND the SD card!) is removed) was slightly loose, as were all the screws inside that held the circuit board to the front case. Not significantly loose, but a good 1/3rd to half turn for the inside screws, and maybe a bit more for the one above the switch.
Also, there was a fair bit of ... dirt, dust, white stuff, I dunno what it was, but we'll call it dirt for the moment, between the external switch cover/button and the case itself.
So, I cleaned that all out (a good blast of canned air), removed the back case and tightened all the screws, replaced the case back and the screw that holds it in place, and popped the external 'button' for the switch back in place.
End result, the switch now seems to work much more easily and reliably, without having to use a 'death grip' on the button at all.
This is the second time I have been inside my NST, and I found the tear-down instructions online, somewhere. It has been a LONG time, so I don't remember where, but I'm sure you can Google for it.
MildBill
P.S. I should also say thanks to you, for being the prompt that got me to fix my own issue with the switch, it was driving me bonkers at times, but in itself wasn't enough to make me break out the tiny screwdrivers! SO, here's to you, fellow Nook user, and I hope my story helps you!

MildBill said:
This is the second time I have been inside my NST, and I found the tear-down instructions online, somewhere. It has been a LONG time, so I don't remember where, but I'm sure you can Google for it.
Click to expand...
Click to collapse
Yipes... I've done just about everything else to my poor Nook but I'm really timid about opening it up (although I generally take wayward electronics apart at the drop of a hat). I dislike cases that were not meant to ever be opened again by human beings. Too much chance of cosmetic damage. But...... I'll soldier along with it using ADB to initiate reboot until I encounter a situation where that does not work (or my Nook freezes and I can't get it to reboot with the power button....).
But thanks for letting me know and indicating there is a way to get inside. I think I must have come across that also at some point and probably shuddered at the thought!

nmyshkin said:
But thanks for letting me know and indicating there is a way to get inside. I think I must have come across that also at some point and probably shuddered at the thought!
Click to expand...
Click to collapse
Actually, other than popping out the power button on the back, which is pretty easy, the case opens nicely.One screw, which is under the power button (and a paper tamper seal ), and with no card in the card reader slot, you simply slide the case apart and the back comes loose from the front easily. And, slides back together just as nicely.
Let me see if I can find the tutorial on how to take it apart. I'll edit with the link if I do...
MildBill
EDIT: Here's this one, focus isn't always great, but at least the action is always onscreen. I used a very small screwdriver instead if the Simcard, you could also use what's called a splooge, a plastic thingy for prying apart plastic cases... You will also need a T5 torx driver.
http://www.youtube.com/watch?v=q7U7TfBIXH0

I use the small blade on my Swiss Army knife.
If you push the power button very gently (not actuating) you will cause a gap in the lower edge.
Insert the blade a bit under the edge and pry both upward and outward.
I do this a lot.

I do this a lot.
Lol Probably more than anyone else in the civilized world!
OB
Sent from my SPH-D710VMUB using Tapatalk 2

Redmi Note 3G Power on issue

My Redmi Note 3g is not powering on after inserting sim card. :crying: It is able to power up without sim.
Once it is power on it is working properly.Please note it's not Hard/Soft bricked.
Guys have you faced similar issue ever,How did you overcome it or suggest me the possible solutions?

Try cleaning the phone connectors the golden part an clean the pin of the commector on the phone.
Hope that helps

honghongleong said:
Try cleaning the phone connectors the golden part an clean the pin of the commector on the phone.
Hope that helps
Click to expand...
Click to collapse
Thanks for the reply.How to do this,please explain.

Try to use a cloth and wipe the golden part on thre batter and do it again on the phone connector
---------- Post added at 12:19 PM ---------- Previous post was at 12:18 PM ----------
And also try taking in and out of the battery hope it helps

Stuck SIM tray

hello guys, yesterday I was trying to switch my sd card and what I didnt expect, I couldnt remove the tray.
I thought maybe sim or sd was stuck, so after a while, I was able to gently remove it with a knife.
As it turned out, that wasnt a problem and I still cant remove it fully...
ye...why does this have to happen... anyone have some trick maybe? Or experienced the same problem?
Thanks

It's possible that your SIM card (or a storage card) has become disloged, ie; is not laying flat in the tray. I think the best you can do is to gently push the tray back in and lay it flat face up and see if you can shake it a bit to get it to settle into the tray. If that does not work, I would take it somewhere for repairs.

Just cant believe this really...
I managed to break it, so the stuck piece is still in my phone, but now I am at least able to put a sim and sd card into it.
Contacts little bent, but its how it is and the phone works. Will have to ask about warranty service on this, I am really curious, what will they say...
So be aware, even thing like this can happen...

Yes, this SIM tray is very fragile. You are not the first.

Exact same thing happened to me. I believe there is some clip or contact that detects when the Sim tray is inserted or ejected and it gets caught there. They used a flimsy plastic Sim tray and it breaks in the same place.
The SD card and Sim tray still work. Just have to reset the phone when you change it for the phone to detect the changes.

Happened to me exactly like yours...i used a very this bit of plastic, with a bit of blue tack very firmly attached to the plastic and gently, VERY gently pushed it in to the sim/sd card slot and only took 2 attempts but the bit that broke off came out!!
Then went on Ebay and got a brand new sim/sd card tray and voila!
Cost me £4.50 for new sim tray, but working perfect now.
Matt

Any ideas on extracting w/o breaking the tray?
I have the exact same issue as the OP (before his tray broke).
Does anyone know any tricks to extract a stuck tray without breaking it?
edit: nm. Broke the tray. Took no force at all.
So the issue here is one of the SIM reader pins is sticking up and is catching the tray. Trying carefully to bend it back where it belongs.
edit #2: Can't bend the pin back w/o disassembling the phone. Going to borrow a heat gun.

matthew33 said:
Happened to me exactly like yours...i used a very this bit of plastic, with a bit of blue tack very firmly attached to the plastic and gently, VERY gently pushed it in to the sim/sd card slot and only took 2 attempts but the bit that broke off came out!!
Then went on Ebay and got a brand new sim/sd card tray and voila!
Cost me £4.50 for new sim tray, but working perfect now.
Matt
Click to expand...
Click to collapse
Hey there Matt, I got exact same problem, tray got stuck and I rushly pull left over broken tray. I replace the sim tray but now sdcard not working. It is detected and attempt to format the card but fail at 20%. I'm still try to repeatly removing sim tray before I take it to LG.
---------- Post added at 04:41 PM ---------- Previous post was at 04:36 PM ----------
samo147 said:
Exact same thing happened to me. I believe there is some clip or contact that detects when the Sim tray is inserted or ejected and it gets caught there. They used a flimsy plastic Sim tray and it breaks in the same place.
The SD card and Sim tray still work. Just have to reset the phone when you change it for the phone to detect the changes.
Click to expand...
Click to collapse
So you meant when replace that sim tray, you need to hard reset so it will detect the sdcard? Because I have sim tray replaced, sim worked but sdcard wasnt, it keep fail to format at 20%.

You must have damaged some pins. For me all my.pins are intact and the broken piece is still in the phone. I have to do a hard reset for mine if I want to change the Sim or SD card

samo147 said:
You must have damaged some pins.
Click to expand...
Click to collapse
Same here. Damaged SIM reader pin. Tore the phone down and it's not clear if it's repairable or not.
Regardless, I'm writing off my G6 (just 1 month after I got it). I'll pickup a V20 for now, so I don't have to look at another SIM tray.

samo147 said:
You must have damaged some pins. For me all my.pins are intact and the broken piece is still in the phone. I have to do a hard reset for mine if I want to change the Sim or SD card
Click to expand...
Click to collapse
I went to LG and they ask for mainboard replacement cost $400, what a joke! Looks like they wouldnt replace only damaged part.

Even if you replaced it. It won't be long before it breaks again in the same spot... If it was a metal Sim tray it would be a lot better. I'm going to avoid LG phones from now on.

evan_g4 said:
Hey there Matt, I got exact same problem, tray got stuck and I rushly pull left over broken tray. I replace the sim tray but now sdcard not working. It is detected and attempt to format the card but fail at 20%. I'm still try to repeatly removing sim tray before I take it to LG.
---------- Post added at 04:41 PM ---------- Previous post was at 04:36 PM ----------
So you meant when replace that sim tray, you need to hard reset so it will detect the sdcard? Because I have sim tray replaced, sim worked but sdcard wasnt, it keep fail to format at 20%.
Click to expand...
Click to collapse
Happened to me AGAIN yesterday mate, now, like you...my SD card no longer works..ARRGHH!!!
Matt

Bad design
I have had 3 LG G6s, each one has had this happen. It sticks in the corner by the sd card contacts. After it catches it will not read SIM until i get a new tray. I think there may be some sort of pressure switch. I wish LG would replace it with a G8x...

Even the models w/o dual sim capability have contacts for a second sim. These rub against and can get stuck at the tiny pads on the underside of many mSD cards. This will cause the tray to get stuck in the frame for additional friction. If this happens to me again i will try to pull the tray out with some adhesive tape to be able to apply force in the middle or at the left side, where the sd sits, instead of the opposite side via the hole.
Especially the newer, bigger mSDs seem to have such pads, none of my old ones has one, that's why i didn't test whether you could sadely remove the pad. Probably there's the bare flash die underneath.

I solved the problem...its called the LG V30!
Love it!
Matt
Sent from my LG-H930 using Tapatalk

cp1024 said:
I have had 3 LG G6s, each one has had this happen. It sticks in the corner by the sd card contacts. After it catches it will not read SIM until i get a new tray. I think there may be some sort of pressure switch. I wish LG would replace it with a G8x...
Click to expand...
Click to collapse
Hi, I got the same problem. The tray broke down only for the SD card and SIM slot is intact. But the phone does not anymore recognize SIM card. So do you think that I did not damage the reader and it's only a matter of getting a new SIM holder?

If you ran into the issue with a sticky mSD, the contacts for the second sim msy be bent/broken/shorted. Whereas only a short may prohibit use of the primary sim slot. And the contacts may not even be soldered to the pcb on a single sim phone like p870. Otherwise just the flimsy plastic tray broke. On my Iphone 4s it was made of metal. And the lever to push the thing outwards was centered and not to the right side, which makes even pushing out an empty tray difficult.

I finally got replacement tray and can confirm that SIM reader started working again. So it indeed seems that there is a pressure switch and it did not activate when the SD card compartment was damaged. No I just worry do I dare to remove sim tray ever again.

My current 128GB mSD in the p870 has a sticker on the back like most mSDs at higher (32/64GB and up) capacities, but this time there's no friction with the useless contacts for dual sim.
But anyway, once the tray has been pushed out slightly, you have to try to grab and pull from the opposite side while pushing the pin in, otherwise there's high friction.

A question for a new LCD Display

Hi
I bought a new screen and installed it but the touch did not work then I installed another screen and the touch did not work
What is the problem with solving it?

I'd say if two different screens have the same issue, it's the hardware problem with the phone itself. Could be the connector for the ribbon cable - if you have a magnifying glass or visor, see if you can find anything wrong with it. Try cleaning it (compressed air is the safest way, but sometimes a wooden toothpick works well, if you are careful). Also, make sure the adhesive "flaps" on both sides of the connector are properly attached to the grounding shield. Other than that, I have no other suggestions for a DIY fix...

mamdooh191 said:
Hi
I bought a new screen and installed it but the touch did not work then I installed another screen and the touch did not work
What is the problem with solving it?
Click to expand...
Click to collapse
Some have lost touch when they messed up flashing or when Essential Sep update had a problem, as I recall, I think they fixed it by side loading an OTA image. Research this first yourself (might be on reddit etc)
---------- Post added at 05:22 AM ---------- Previous post was at 05:10 AM ----------
Seems like it was Oct update, I was thinking of
https://forum.xda-developers.com/essential-phone/help/phone-lose-touch-flash-oct-update-t3849787

IronRoo said:
Some have lost touch when they messed up flashing or when Essential Sep update had a problem, as I recall, I think they fixed it by side loading an OTA image. Research this first yourself (might be on reddit etc)
---------- Post added at 05:22 AM ---------- Previous post was at 05:10 AM ----------
Seems like it was Oct update, I was thinking of
https://forum.xda-developers.com/essential-phone/help/phone-lose-touch-flash-oct-update-t3849787
Click to expand...
Click to collapse
Hi
Thank you brother for your reply
Do I install a new image from the mobile site?

kt-Froggy said:
I'd say if two different screens have the same issue, it's the hardware problem with the phone itself. Could be the connector for the ribbon cable - if you have a magnifying glass or visor, see if you can find anything wrong with it. Try cleaning it (compressed air is the safest way, but sometimes a wooden toothpick works well, if you are careful). Also, make sure the adhesive "flaps" on both sides of the connector are properly attached to the grounding shield. Other than that, I have no other suggestions for a DIY fix...
Click to expand...
Click to collapse
thanks YOU brother
This method did not work

IronRoo said:
Some have lost touch when they messed up flashing or when Essential Sep update had a problem, as I recall, I think they fixed it by side loading an OTA image. Research this first yourself (might be on reddit etc)
---------- Post added at 05:22 AM ---------- Previous post was at 05:10 AM ----------
Seems like it was Oct update, I was thinking of
https://forum.xda-developers.com/essential-phone/help/phone-lose-touch-flash-oct-update-t3849787
Click to expand...
Click to collapse
The method did not work

mamdooh191 said:
The method did not work
Click to expand...
Click to collapse
You haven't told us what happened when it first stopped working. Guess it must be hardware then. As KT said above, I'd look at their ribbon cable first if not a new one supplied, they crack easy & even if still touching over time the joint oxidises and then stops current following. Same sort of thing can happen in connector pins or solder joint on components, but you really need a very strong magnifier/eyepiece tool see it though you might get lucky. Also look for any signs of corrosion or dendritic growth, clean with a little alcohol if anything visible on nearby components on PCB.

IronRoo said:
You haven't told us what happened when it first stopped working. Guess it must be hardware then. As KT said above, I'd look at their ribbon cable first if not a new one supplied, they crack easy & even if still touching over time the joint oxidises and then stops current following. Same sort of thing can happen in connector pins or solder joint on components, but you really need a very strong magnifier/eyepiece tool see it though you might get lucky. Also look for any signs of corrosion or dendritic growth, clean with a little alcohol if anything visible on nearby components on PCB.
Click to expand...
Click to collapse
Hi brother
At first, the screen was broken but the device was still working after a while I passed the wrong picture and the device is not working, I installed a picture with the help of
https://forum.xda-developers.com/essential-phone/help/device-hung-start-t3891580
I installed the screen after editing and I had a problem with the touch
Your style brother did not work
Can AC Touch Crash? Or need a touchdriver on the device?

mamdooh191 said:
Hi brother
At first, the screen was broken but the device was still working after a while I passed the wrong picture and the device is not working, I installed a picture with the help of
https://forum.xda-developers.com/essential-phone/help/device-hung-start-t3891580
I installed the screen after editing and I had a problem with the touch
Your style brother did not work
Can AC Touch Crash? Or need a touchdriver on the device?
Click to expand...
Click to collapse
Am I right in saying,
at first the screen was cracked but touch was working,
then you flashed wrong image & touch lost
(what image? another stock image or something else? Or you flashed it to wrong slot (A or B))
But then you got it working by flash image from link above but then edited some file when you install new screen & then lost touch. What did you edit? Did the new screen ever work?
Don't know what AC Touch is, yes a driver would be needed which for touch screens is normally OEM embedded so should be in the chip of the cable of the new touchscreen, I think (I am not 100% certain on our phone though so possibly driver comes with Essential kernal) either way you should have one.
did you get whole screen assembly lcd+digitizer? Do you know for certain the screen you have is confirmed to work on our phone eg by another xda member? If yes then probably it's the file you have edited, then I think your problem is probably software, but it is not fixed by flashing a new FULL STOCK image (try different ones) then you have a problem only Essential can fix, but I don't think they will do this. maybe a more knowledgeably member can confirm some of this ...

Or you flashed it to wrong slot (A or B))
slot B

mamdooh191 said:
Or you flashed it to wrong slot (A or B))
slot B
Click to expand...
Click to collapse
We can't tell if that is right or wrong… it depends which slot you were on before… as it changes with each update on A/B partition phones. I don't know if flashing to wrong slot can give the problems you have though… I haven't read up on that problem...