Develop Bugs

[Q] Carrier problem with my GNex

Hello guys!
Hopefully you can help me with this one. Since 2 days ago, my GNex stopped being able to connect to my current carrier: Koodo (Telus' affiliate brand here in Canada). Now I initially thought it was a problem coming from the company's SIM card, and that it would've been relied to the Rogers shortage that occurred a couple days ago, but it wasn't. The symptoms are simple, no way to connect to the carrier. It happened randomly as I did not perform anything unusual with the phone, aside from connecting it via USB to my computer (which I often do). It does recognize that a SIM card is inserted and that Koodo is indeed a carrier, but when I click on it in my Network Operators menu, it tells me it can't connect and to try again later. When I click any other carrier, it says the same. So far here are the steps I took, with no success.
1. Removed both battery/SIM for a minute or more then rebooted. (Also made sure that 2G was off)
2. Called a Koodo tech guy who updated the SIM.
3. Went in store to try and put my SIM in a different phone, SIM worked fine.
4. Lady tried installing a different SIM card (her own), still same problem. Tried a brand new one, still not working.
5. Backed up my pictures and factory reset the phone. Same problem.
6. Took SIM out, and the phone does recognize there is not a SIM card and now the phone gives me the NO SIM CARD message at unlock screen.
7. Tried clearing the "Google Services Framework" cache, then update the phone but no update is found after multiple attempts.
8. Browsed the internet for hours then cried myself to sleep, hoping someone would help me out eventually.
By the way I'm using the same SIM in a different phone right now, and it works flawlessly. The phone was purchased on the Play Store and is factory unlocked. It is unrooted, and it was running 4.2.2 and now runs 4.2.1
Thanks!

Weird SIM card issue

So I have a AT&T GN8. At one point I had some SIM card issues and I needed to insert and take the SIM card out a couple of times. In doing so, it led me to this problem.
- The SIM card insertion process now is reversed. For example, when I insert a SIM card and "click" it in, I get a window that pops up saying that the SIM card has been removed, please reboot the device. When I remove it, i.e., click on it to remove it, it says that the device detects a new SIM card, please reboot.
- The only way that I can get the SIM card to work is to click it out, but then leave it partially inserted for the device to read it. I then close the plastic SIM card cover to try to get it to stick in place, but sometimes the cover gets loose and the device notifies me that that the SIM card is out. Obviously not an ideal situation.
Does this make any sense at all? Does anyone have any suggestions on how I can fix this?
Thanks.

esoh said:
So I have a AT&T GN8. At one point I had some SIM card issues and I needed to insert and take the SIM card out a couple of times. In doing so, it led me to this problem.
- The SIM card insertion process now is reversed. For example, when I insert a SIM card and "click" it in, I get a window that pops up saying that the SIM card has been removed, please reboot the device. When I remove it, i.e., click on it to remove it, it says that the device detects a new SIM card, please reboot.
- The only way that I can get the SIM card to work is to click it out, but then leave it partially inserted for the device to read it. I then close the plastic SIM card cover to try to get it to stick in place, but sometimes the cover gets loose and the device notifies me that that the SIM card is out. Obviously not an ideal situation.
Does this make any sense at all? Does anyone have any suggestions on how I can fix this?
Thanks.
Click to expand...
Click to collapse
I only remove or install a SIM when the device is off. Maybe you can do this with the Note 8.0, but I like the tried and true method that works all the time for me without any hassles.

gooberdude said:
I only remove or install a SIM when the device is off. Maybe you can do this with the Note 8.0, but I like the tried and true method that works all the time for me without any hassles.
Click to expand...
Click to collapse
Thanks. Tried that a couple of times but no go. It's very odd, for some reason the mechanism thingy is reversed so clicked in signals out and vice versa. I finally put a piece of scotch tape on the SIM card cover to keep the cover from popping out with the SIM card. Works fine for now, but I'm sure the next time I'm overseas it will be a pain.

Lg G4 in bootloop, how do i get files off of the phone?

This is my father's phone, he has already called verizon and they are going to send him a new phone, but he has to send this one back. I would like to get all of his photos off of this phone before we have to send it back, but it is in a boot loop and there is no TWRP installed to my knowledge, only the stock "hold volume down and power" restore options.
Is there anything i can install or something that will allow me to get anything off of the phone?
(btw it is not rooted either, my father is almost 50 now and he doesnt play with technology like i do)

I used this method and it worked perfectly
http://forum.xda-developers.com/tmobile-g4/help/how-to-recover-data-boot-loop-defect-t3297766

My G4 had a bootloop issue once.. turned out the problem was related to a corrupted sdcard. Once i had removed that then everything was OK and it booted up just fine. This might be worth trying if you haven't found a solution yet.

CrustyMcLovin said:
My G4 had a bootloop issue once.. turned out the problem was related to a corrupted sdcard. Once i had removed that then everything was OK and it booted up just fine. This might be worth trying if you haven't found a solution yet.
Click to expand...
Click to collapse
Mr. Crusty Genius: You solved my bootloop problem! By removing my SD card, the phone now works flawlessly where is was bootlopping with the SD card in.
My question, however, is what do I do now? I tried reformatting the SD card (after copying files to my desktop), and as soon as I put the allegedly formatted card back in the LG, back to bootlooping I went.
What would be my next step? Say "f" it and get a new card? Leave the card out? Or fruitlessly try to contact VZW and/or LG. This irritatingly enough happened THREE DAYS beyond one year since purchase.
90% of what is said here is Greek to me, so if you could use small words, it would be appreciated The phone isn't anything except off-contract. Using the way it came in the mail one year and THREE DAYS ago.
Cheers!

catherinecaprio said:
Mr. Crusty Genius: You solved my bootloop problem! By removing my SD card, the phone now works flawlessly where is was bootlopping with the SD card in.
My question, however, is what do I do now? I tried reformatting the SD card (after copying files to my desktop), and as soon as I put the allegedly formatted card back in the LG, back to bootlooping I went.
What would be my next step? Say "f" it and get a new card? Leave the card out? Or fruitlessly try to contact VZW and/or LG. This irritatingly enough happened THREE DAYS beyond one year since purchase.
90% of what is said here is Greek to me, so if you could use small words, it would be appreciated The phone isn't anything except off-contract. Using the way it came in the mail one year and THREE DAYS ago.
Cheers!
Click to expand...
Click to collapse
Hi
Yeah so in my case all I had to do was format the card and then stick it back in and problem solved. If you've already tried that then I'd try a new sdcard!

CrustyMcLovin said:
Hi
Yeah so in my case all I had to do was format the card and then stick it back in and problem solved. If you've already tried that then I'd try a new sdcard!
Click to expand...
Click to collapse
Thanks for your reply. I just ordered the Nexus 6P 64 GB. Hopefully I'll have more luck with that. Fingers crossed.

DID THIS worked perfectly
http://forum.xda-developers.com/g4/help/diy-h815-usa-variant-hardware-boot-loop-t3311623

Gokufighther said:
This is my father's phone, he has already called verizon and they are going to send him a new phone, but he has to send this one back. I would like to get all of his photos off of this phone before we have to send it back, but it is in a boot loop and there is no TWRP installed to my knowledge, only the stock "hold volume down and power" restore options.
Is there anything i can install or something that will allow me to get anything off of the phone?
(btw it is not rooted either, my father is almost 50 now and he doesnt play with technology like i do)
Click to expand...
Click to collapse
DID this worked
http://forum.xda-developers.com/g4/help/diy-h815-usa-variant-hardware-boot-loop-t3311623

I was told by multiple people that the G4's defect of bootlooping issues is hardware related. Phone gets to hot and it causes a tiny solder point to break. Requires a new mainboard.
This is why I want an SD card....every possible piece of my data I store on the SD card and not the internal memory incase phone itself is not usable. It has saved me a fe5w times. Really want a Nexus phone, but no sd...so....yea...and they don't make a 200gb+ model.

The one thing that worked for me was putting my phone in the freezer for 15 minutes and then booting it up while still in the freezer. I also read to turn it on airplane mode after finally getting it to boot up so it would not slip back into the loop defect. After getting it to boot I immediately plugged it into the computer and switched the USB charging setting (in the notifications when connected to a computer or laptop) to Meida sync and then using the file explorer to go into the internal files of the phone and moved all of the pictures off of the phone onto my computer thus saving them. (your camera pictures will be under DCIM)

Help! Verizon Note 4 random network drop...

I apologize in advance for the long read.
I recently activated Verizon service on a Note 4 that has been sitting unused since the Note 8 came out. The Note 4 is in perfect physical condition, with no scratches on the screen or body, and has been in a protective case since new. I did replace the battery in it prior to activation, as I expect for the life to have been deteriorated.
I did a factory reset and inserted my Verizon SIM card, and it worked perfectly. I installed my everyday apps and a few games on the phone, and I used it without any issue for about a week. During that time, it did install a couple of OTA updates, but I expected that since it had been "off service" for a few years.
After that first week, I put the SIM card back in my NOTE 8 for a couple of days, after which I went back to the Note 4. Initially, 4G data and cell service worked, but within the same day I started having service drops. If I was on the phone and a call dropped, it would show an error message saying "No SIM / SIM Error".
Her is what I have attempted so far:
First, I replaced the SIM with a new one. There was difference in the frequency of the random service drop.
When that did nothing, I assumed that one of the OTA updates from the prior week had done something to modem / radio. The phone was on 6.0.1 at that time. I unlocked the bootloader and installed TWRP, and first tried downgrading to stock 5.1.1, then to a "modified 5.1.1, then to CM 13, and now Lineage 15 (frequently factory reset / cache wipe. There has not been an improvement (or reduction) to the random service drop.
Yesterday, I happened to be on My Verizon online, and I had a message showing that Verizon no long had the information on my phone (IMEI), and requesting that I open a Chat Window to update my info. At this point, the Note 4 is still running the Lineage 15.1. The Verizon team member asked me for the IMEI, and when I looked under the settings, it said "None" under IMEI. In a quick search, I found a forum on Lineage 15.1 that said turning of the screen lock and rebooting the phone will reload the SIM and IMEI info. That worked, and I was able to view the IMEI and verify connection. I explained my issue with the Verizon support, and she said everything appeared to be good on her end. Over the course of 15 minutes, we tested my connection and it worked. About 30 minutes after that, it dropped service again.
Finally, here is where it is at now:
I start with no service. If I do nothing but restart the phone, it will show LTE service for 2 or 3 seconds, then nothing. If I remove and reinstall the SIM, I will get the same 2 or 3 seconds, then nothing. If I turn Airplane Mode on and off, that does not reconnect the service. If I change the lock screen security to "None" and restart the phone, there is no service, but if I set Screen Lock to "Swipe" and restart the phone, I will have LTE service for at least 30 - 45 minutes before it drops, sometimes a few hours. When it does drop, it does not come back on it's own. The only way I have found to get it back it to "Screen Lock - None, reboot, Screen Lock - swipe, reboot".
Will replacing the modem fix the problem? Is there a specific modem that I need to match up to the ROM? Thanks!

bife2003 said:
I apologize in advance for the long read.
I recently activated Verizon service on a Note 4 that has been sitting unused since the Note 8 came out. The Note 4 is in perfect physical condition, with no scratches on the screen or body, and has been in a protective case since new. I did replace the battery in it prior to activation, as I expect for the life to have been deteriorated.
I did a factory reset and inserted my Verizon SIM card, and it worked perfectly. I installed my everyday apps and a few games on the phone, and I used it without any issue for about a week. During that time, it did install a couple of OTA updates, but I expected that since it had been "off service" for a few years.
After that first week, I put the SIM card back in my NOTE 8 for a couple of days, after which I went back to the Note 4. Initially, 4G data and cell service worked, but within the same day I started having service drops. If I was on the phone and a call dropped, it would show an error message saying "No SIM / SIM Error".
Her is what I have attempted so far:
First, I replaced the SIM with a new one. There was difference in the frequency of the random service drop.
When that did nothing, I assumed that one of the OTA updates from the prior week had done something to modem / radio. The phone was on 6.0.1 at that time. I unlocked the bootloader and installed TWRP, and first tried downgrading to stock 5.1.1, then to a "modified 5.1.1, then to CM 13, and now Lineage 15 (frequently factory reset / cache wipe. There has not been an improvement (or reduction) to the random service drop.
Yesterday, I happened to be on My Verizon online, and I had a message showing that Verizon no long had the information on my phone (IMEI), and requesting that I open a Chat Window to update my info. At this point, the Note 4 is still running the Lineage 15.1. The Verizon team member asked me for the IMEI, and when I looked under the settings, it said "None" under IMEI. In a quick search, I found a forum on Lineage 15.1 that said turning of the screen lock and rebooting the phone will reload the SIM and IMEI info. That worked, and I was able to view the IMEI and verify connection. I explained my issue with the Verizon support, and she said everything appeared to be good on her end. Over the course of 15 minutes, we tested my connection and it worked. About 30 minutes after that, it dropped service again.
Finally, here is where it is at now:
I start with no service. If I do nothing but restart the phone, it will show LTE service for 2 or 3 seconds, then nothing. If I remove and reinstall the SIM, I will get the same 2 or 3 seconds, then nothing. If I turn Airplane Mode on and off, that does not reconnect the service. If I change the lock screen security to "None" and restart the phone, there is no service, but if I set Screen Lock to "Swipe" and restart the phone, I will have LTE service for at least 30 - 45 minutes before it drops, sometimes a few hours. When it does drop, it does not come back on it's own. The only way I have found to get it back it to "Screen Lock - None, reboot, Screen Lock - swipe, reboot".
Will replacing the modem fix the problem? Is there a specific modem that I need to match up to the ROM? Thanks!
Click to expand...
Click to collapse
I think you might be dealing with 2 separate issues. I'm kind of guessing about the first issue but the second is a common problem.
I think the original problem is that your sim card is not making a good contact in the sim slot. You could try putting a think piece of cardboard or something that will press the sim card to the sim slot contacts (maybe check to make sure that there isn't any dirt on the contacts but from the sound of it I'm guessing your phone is pretty clean).
The second problem is that all of the aosp roms have varying degrees of signal loss that occurs. Some people have a lot and some not as much, but everyone is affected in some way with what people have been referring to as "sim death".
My suggestion would be to run a stock or modified stock rom until you get your sim problem straightened out and then if you still want to switch to an aosp rom then at least you'll know that any further problems are just the normal sim death that occurs from time to time with those types of roms.
If you've already updated your bootloader to a 6.0.1 version you can flash the modified stock rom that I put together. I haven't had any signal/sim issues at all with that and no reports of it. Like I mentioned before though, the only caveat is that it needs to be on a bootloader that is at least CPD1 or newer. If it's not then your wifi won't work.
Rom link If you're interested.

kevintm78 said:
I think you might be dealing with 2 separate issues. I'm kind of guessing about the first issue but the second is a common problem.
I think the original problem is that your sim card is not making a good contact in the sim slot. You could try putting a think piece of cardboard or something that will press the sim card to the sim slot contacts (maybe check to make sure that there isn't any dirt on the contacts but from the sound of it I'm guessing your phone is pretty clean).
The second problem is that all of the aosp roms have varying degrees of signal loss that occurs. Some people have a lot and some not as much, but everyone is affected in some way with what people have been referring to as "sim death".
My suggestion would be to run a stock or modified stock rom until you get your sim problem straightened out and then if you still want to switch to an aosp rom then at least you'll know that any further problems are just the normal sim death that occurs from time to time with those types of roms.
If you've already updated your bootloader to a 6.0.1 version you can flash the modified stock rom that I put together. I haven't had any signal/sim issues at all with that and no reports of it. Like I mentioned before though, the only caveat is that it needs to be on a bootloader that is at least CPD1 or newer. If it's not then your wifi won't work.
Rom link If you're interested.
Click to expand...
Click to collapse
Thank you for the reply. I think that you may be onto something with both issues. After posting this question today, I did examine the SIM slot, and although all of the pins looked good, and no dust or debris was visible, the metal guide over the SIM did feel slightly loose from the card. I did put in a thin shim, and the significantly improved the time that the phone stays connected. If that was a true issue, along with the possibility of the ROM causing a separate cause, I am absolutely interested on going back to a stock (or modified stock) ROM. The only reason that I did what I did was an attempt to fix the connectivity issue.
Thanks for your help. I will give your ROM a try and let you know how it works.

Question SM-F926U1 no longer seeing/using SIM card?

Hi everyone, just a little curious on what side of the old "metaphorical" coin my phone has fallen on. The problem this coin is concerning, is simply one related to my SIM. My phone has no cell service right now since it doesn't want to acknowledge or use the sim card it has in it. It's a 512Gb unlocked phone I special ordered upon first release, no other problems (other than the screens scratching easily) but now it's no longer working on anything other than wifi. It's the wifi that I think caused this problem actually. I just set up a new lightweight Asus RT-AX56U router to utilize two WAN ports (one built in and the other setup through a USB ethernet adapter). The problem came about after I switched down to a WPA3/WPA2 setup from a full WPA3 simply due to a connection problem one of my laptops was having (it's wifi card was one from prior to WPA3). Shortly after I did that my Z Fold 3 started having frequent wifi drop problems. After about an hour of that the connection seemed stable, then the next thing I know the phone dropped connection to both Wifi and cell network! Then after I restarted the router, only wifi would reconnect and my cell network connection has been M.I.A. ever since despite what I do (tried airplane mode, tried cache whipping it, restarting it, and finally even a full factory wipe/restart). My phone is up to date on all of it's updates (finally decided to last month after seeing that my model has no root + camera options) but nothing other than a routen cache cleaning ever happened to it prior. Just trying to figure out what my next move now should be, get a new SIM card, or is a whole new phone needed?

I would first try another sim card to see it's related to the physical card or a carrier issue. Maybe try and borrow one from another network as well.
If that fails, try a factory reset.
If that fails, it's time to reach out to Samsung.

I tried a different SIM from a different phone from the same provider (on the same contract bill). But it wouldn't register, I even factory reset it prior to trying the other SIM. So I went and got a new one from the carrier, and problem solved! (First SIM card I've ever burned out without truly trying to)