Database Users

Nexus 4 - SIM problem

Hello,
I just got a Nexus 4 16GB (had a 8GB before) and I've to reenter my PIN code almost every time I'm unlocking the phone when it has been in deep sleep. (the card is locked and the phone is disconnected from the network)
I first thought it's caused by custom ROMs, but it's even happening on stock ROM/kernel...
Am I the only one with that kind of problem ?

If you get the sim pin wrong a couple of times, the card is locked and you need to call your provider for a personal unlock code.
If you keep trying to unlock it eventually the sim will simply become inoperable and you'll need a new one.

I can unlock it without a problem after entering my correct pin.
So it is not a problem with the SIM or my provider.

Go into Settings > security and then there should be an option along the lines of Sim card lock. Try checking in there.
Sent from my GT-I9100 using xda premium

Disabled the pin lock for now.. But the signal still drops when the phone is longer in deep sleep.

I had the same problem!
I don't know if this is rom or kernel related, but since I switched to ParanoidAndroid it's gone....

Ah finally someone with the same problem.
I've already been running PA, but the problem did still exist.
Did you change anything else beside that?

i removed my SIM again and cleaned it.

i've also had that issue the second day after receiving the phone. I removed the sim, put it back in but that didn't help - i looked at my sim card tray and i realized that a one side of the sim card chip was close to one metal side of the tray and i figured that could be the issue - so what i did is i took a stripe of adhesive tape and made sure they wouldn't touch - I haven't had the issue again and it's been more than 2 weeks.

Uh...I remember a kernel arg from my old HTC Topaz WiMo-Device, which was able to run XDAndroid.
The argument was pm.sleep_mode, and it is still available on the Nexus 4 and set in the system/build.prop
It controls, how the device handles locking, usually it is set to 1, but, i think, it goes from 5 to 0, where 5 is "stay on all the time" and 0 is "shut down everything when locked".
You could try to swich it to 2 or 3, maybe it helps.

I got a replacement phone which is working fine now.
Thanks for the tips anyway

hmm got a 16gb one and the Sim keeps disconnecting even without deep sleep.
might need to send it back too. poop

Hi,
I got the same problem too.
Sometime, it's getting worse and worse so I have no other choice but to reboot the phone --> When I put my PIN code and press the validation button, the screen doesn't go to the main menu but asks me again about my PIN code. Infinite loop...
I cleaned the SIM card 15min ago and no problem since (fingers crossed). I read an alternative version of android solved the issue in one case but not always. I won't take that risk if I have to send it back to the manufacturer. Before I do that, could you suggest me something else to try ?
Many thanks for your help.
Best,
Valentin

I had the Nexus 4 since December and yesterday for the first time the phone asked for the PIN code and lost the connection to the network. And like posytryon I had to enter the PIN more than once (in my case it was "only" twice). This morning it already happened twice again. Never rooted the phone, stock Android on it. What is going on?

Why are you people so paranoid? I've never used a lock on mine. In all these years....
Just asking for trouble using sim lock IMO.

What kind of silly reply is that? Why is it asking for trouble using SIM lock??? And if you read through this thread, someone had the same problem of the phone not connecting anymore even without SIM lock.

I pulled my sim yesterday because I switched users now it says no sim I put old sim in same problem flashed new rom nothing...
(CRAZY TIMES)

lucker#1 said:
i've also had that issue the second day after receiving the phone. I removed the sim, put it back in but that didn't help - i looked at my sim card tray and i realized that a one side of the sim card chip was close to one metal side of the tray and i figured that could be the issue - so what i did is i took a stripe of adhesive tape and made survey they wouldn't touch - I haven't had the issue again and it's been more than 2 weeks.
Click to expand...
Click to collapse
Thank you so much this fixed my problem!!! :beer:
Again thank you so much!!!
(Mathew 5:44)

lucker#1 said:
i've also had that issue the second day after receiving the phone. I removed the sim, put it back in but that didn't help - i looked at my sim card tray and i realized that a one side of the sim card chip was close to one metal side of the tray and i figured that could be the issue - so what i did is i took a stripe of adhesive tape and made sure they wouldn't touch - I haven't had the issue again and it's been more than 2 weeks.
Click to expand...
Click to collapse
I'd noticed the same thing, and insulating the SIM from the holder resolved the problem for me also.
I also found an app for monitoring and alerting if the phone switched back to asking for the SIM PIN, this might be useful for others.
SIM Locked Notifier - https://play.google.com/store/apps/details?id=org.slaytanic.SIMLockedRingNotifier

Finally put some adhesive between the tray and the SIM card. Worked perfectly for me too, no SIM problem for 10 days now.
Thank you so much, Lucker#1.

XT1625, I discovered there is a second sim slot under the cover

Maybe this is old news, but I removed the back, and hidden under it is a second sim slot. I tried putting in a sim, but not detecting it. Maybe if I flash a different rom it will work. Is this old news?

creeper said:
Maybe this is old news, but I removed the back, and hidden under it is a second sim slot. I tried putting in a sim, but not detecting it. Maybe if I flash a different rom it will work. Is this old news?
Click to expand...
Click to collapse
There is only one sim slot on my 1625 and it's beneath the back cover next to the sd slot.
Sent using XDA-Developers Mobile App

remove the back snap in cover, then remove the screws and that middle cover. the second sim slot is there. there just isnt a cut out for you to insert one on the middle cover. I should of taken pictures. maybe Ill open it again if i have time today

creeper said:
remove the back snap in cover, then remove the screws and that middle cover. the second sim slot is there. there just isnt a cut out for you to insert one on the middle cover. I should of taken pictures. maybe Ill open it again if i have time today
Click to expand...
Click to collapse
Ahh ok. I know someone that had a ZenFone2 with dual sims and put a prepaid sim in the 2nd slot to receive calls from his Google voice #. Are you trying your main sim in that slot because you may need a sim in slot 1 to get anything on the 2nd slot. It will probably only be good for calling or sms but not data.
Sent using XDA-Developers Mobile App

Ive tried 2 sims at the same time. but my main is a CDMA and that could be causing issues. Maybe if i try 2 gsm.

creeper said:
Ive tried 2 sims at the same time. but my main is a CDMA and that could be causing issues. Maybe if i try 2 gsm.
Click to expand...
Click to collapse
Interesting find! However, doubt it will work without flashing the dual SIM variant ROM.

I'm very interested to see if that second slot is still pinned / hooked up.

[SOLVED ]Nexus 6P - No service message

Hi all!
I've bought a Nexus 6P in september 2016, worked fine in every part until yesterday: my phone stopped showing signal strenght and says "No service" in the upper left corner of the screen.
I was on a custom ROM (Pure Nexus) but:
- Restoring factory images didn't help
- Restoring the oldest Marshmallow factory image didn't help either
- Erasing cache didn't help
- Switching to 2G and 4G didn't help
- I did a network settings reset, nothing changed
- I've switched to a new SIM card, nothing happened (old SIM card worked well on other phones, like this new one)
- I've never touched EFS partition but my IMEI is still there, so i don't think it's a network problem
So... Any ideas?

Oh man... I was hoping it was just me. This has happened to me too within the past few days, twice.
After waiting a few minutes it came back. It *May* be they are doing tower work. That's what I'm hoping.
I am on Verizon Wireless on the 3.79 radio if that helps add info to the pile. What radio are you on?

bigblueshock said:
Oh man... I was hoping it was just me. This has happened to me too within the past few days, twice.
After waiting a few minutes it came back. It *May* be they are doing tower work. That's what I'm hoping.
I am on Verizon Wireless on the 3.79 radio if that helps add info to the pile. What radio are you on?
Click to expand...
Click to collapse
I'm on the same radio, latest radio in latest 7.1.1 release, january security patch, as i said before, installing the oldest Marshmallow release (so the first radio released by Google) didn't change anything!
My provider is Vodafone IT, I don't think they are doing some tower work, because everything works fine on other phones and the same SIM card in!

Good day,
Got same issue few days ago, after phone restarted due to installing January security patch. Phone was not rooted on stock firmware 7.1.1 with locked bootloader.
Cellular network don't work at all, if try to find network manually it return: Error while searching network.
In *#*#4636#*#* all switches in OFF position and cannot switch on. IMEI available.
Also when try to make a call(without network of course) it return: Turn off airplane mode to make a call. Of course it not turned on.
I try flash vendor, bootloader, baseband/radio(3.72, 3.78) previous stock firmware 6.0 and 7.0.
When flash cyanogenmod 14.1, SIM card was not detected.
Carrier Elisa (Estonia), bought in November.
Any ideas?

If you're not on Verizon, I would just switch back to 3.78 radio. Flash it manually. Don't see how that wont fix your issue

bigblueshock said:
If you're not on Verizon, I would just switch back to 3.78 radio. Flash it manually. Don't see how that wont fix your issue
Click to expand...
Click to collapse
Hi mate, a friend of mine have a Nexus 6P, we are on the same carrier and the same 3.79 radio, everything works fine on his phone!
So my problem is not radio realated!
Radio 3.79 is also good for other carriers over Verizon.

Hateware said:
Hi mate, a friend of mine have a Nexus 6P, we are on the same carrier and the same 3.79 radio, everything works fine on his phone!
So my problem is not radio realated!
Radio 3.79 is also good for other carriers over Verizon.
Click to expand...
Click to collapse
Hardware problem with Huawei. The gold contacts on your SIM card are not making contact as they should. Likely a problem with the SIM tray.
Eject SIM card and put some scotch (cello) tape over the card to hold it in the plastic tray. You may need two strips (I did.) Now reinsert the SIM tray. All should be well now with your cellular connection.
Added thickness of the tape holds the SIM contacts to the connectors inside the phone tighter when the tray is closed and the problem is solved.
I did this about three months ago when I started having this problem and have been fine since.

stander01976 said:
Hardware problem with Huawei. The gold contacts on your SIM card are not making contact as they should. Likely a problem with the SIM tray.
Eject SIM card and put some scotch (cello) tape over the card to hold it in the plastic tray. You may need two strips (I did.) Now reinsert the SIM tray. All should be well now with your cellular connection.
Added thickness of the tape holds the SIM contacts to the connectors inside the phone tighter when the tray is closed and the problem is solved.
I did this about three months ago when I started having this problem and have been fine since.
Click to expand...
Click to collapse
Thanks mate, i will try but my phone says "No service", not "No SIM card"!
Thanks anyway!

stander01976 said:
Hardware problem with Huawei. The gold contacts on your SIM card are not making contact as they should. Likely a problem with the SIM tray.
Eject SIM card and put some scotch (cello) tape over the card to hold it in the plastic tray. You may need two strips (I did.) Now reinsert the SIM tray. All should be well now with your cellular connection.
Added thickness of the tape holds the SIM contacts to the connectors inside the phone tighter when the tray is closed and the problem is solved.
I did this about three months ago when I started having this problem and have been fine since.
Click to expand...
Click to collapse
Also not work for me, thank for your reply.
After factory reset phone detect carrier language and also install APN of my sim carrier but no signal.

m03r said:
Also not work for me, thank for your reply.
After factory reset phone detect carrier language and also install APN of my sim carrier but no signal.
Click to expand...
Click to collapse
Hi mate, my Nexus 6P has exactly this behaviour at avery factory reset!
We are on the same boat!

Hateware said:
Hi mate, my Nexus 6P has exactly this behaviour at avery factory reset!
We are on the same boat!
Click to expand...
Click to collapse
Read this productforums.google.com/forum/#!topic/nexus/LLt6mlP_nto looks like hardware trouble. I cannot use warranty service at present, I'm at sea for 2 month

m03r said:
Read this productforums.google.com/forum/#!topic/nexus/LLt6mlP_nto looks like hardware trouble. I cannot use warranty service at present, I'm at sea for 2 month
Click to expand...
Click to collapse
Yeah, me too, I've bought my Nexus 6P trough eBay and was a private seller, it seems that private sellers are not required to provide a warranty...

Hateware said:
Yeah, me too, I've bought my Nexus 6P trough eBay and was a private seller, it seems that private sellers are not required to provide a warranty...
Click to expand...
Click to collapse
If you buy from EBay your only warranty option is Square Trade but if your phone was bad when you got it you can file a buyer protection claim

UP!
Noone else had this problem?

Hateware said:
UP!
Noone else had this problem?
Click to expand...
Click to collapse
It seemed like other people did report having the same problem and their solutions, if they had any. Maybe you should contact your carrier. They might see a problem on their end.

Hateware said:
UP! Noone else had this problem?
Click to expand...
Click to collapse
I know you tried an old SIM, but have you been up to Vodafone to get a new replacement SIM as the next step? In my experience they are happy to replace at no charge. If Vodafone IT's new SIM doesn't work, just try a 3 ITA or TIM.

had this issue ONCE, and flashing the proper vendor file again fixed it.
no idea how or why

v12xke said:
I know you tried an old SIM, but have you been up to Vodafone to get a new replacement SIM as the next step? In my experience they are happy to replace at no charge. If Vodafone IT's new SIM doesn't work, just try a 3 ITA or TIM.
Click to expand...
Click to collapse
I've already switched to a new SIM card, like I said in the first post!
Soulfly3 said:
had this issue ONCE, and flashing the proper vendor file again fixed it.
no idea how or why
Click to expand...
Click to collapse
Thanks but I've already re-flashed factory image, so vendor is built in the restore procedure!

So I had an interesting experience with the same thing. Was running a custom rom that is very close to stock and updated to the most recent security update. Shortly thereafter, my carrier connection would drop (didn't notice at first because if I was connected to WiFi, it would be hard to tell). Only a reboot of the phone would fix it, for often no more than an hour or 2. So I started by wiping the device. Then I went to a different custom rom. And then finally, I went back to stock using "flash-all.bat" from the factory image. But alas, the issue continued. The last thing I did, which seems to have resolved it so far (12+ hours without a disconnection), was to relock my bootloader. Just in case it helps someone else. Is it possible that the new radio + an unlocked bootloader is causing the issue?

locked and unlocked bootloader,
hard factory reset,
flash google factory image and erase all internal storage,
wiped dalvic/cache,
flash vendor image,
flash different radio and bootloaders,
but still no service and no data. i think it's hardware issue and i have no warranty

my 6p doesn't recognize my sim card

My nexus 6p doesn't recognize my sim card after 7.1.2 update.
Some way to fix it or is it a hardware problem?

Debuffer said:
My nexus 6p doesn't recognize my sim card after 7.1.2 update. Some way to fix it or is it a hardware problem?
Click to expand...
Click to collapse
Cleaned SIM contacts? Put tape on the back of the SIM to improve contact? Go to your cellular provider and ask for a new SIM at no charge? Complete wipe and reflash full stock image. If it is still unresolved then yes. It is hardware.

v12xke said:
Cleaned SIM contacts? Put tape on the back of the SIM to improve contact? Go to your cellular provider and ask for a new SIM at no charge? Complete wipe and reflash full stock image. If it is still unresolved then yes. It is hardware.
Click to expand...
Click to collapse
What can I use to clean the SIM contacts? And SIM Contacts mean my Sim card or the sim hardware inside my device?
Where should I put the tape to improve contact? My Sim card doesn't keep stopped in the tray, if I touch it it just move.
I have wiped but I haven't my pc right now to flash stock.

Debuffer said:
What can I use to clean the SIM contacts? And SIM Contacts mean my Sim card or the sim hardware inside my device? Where should I put the tape to improve contact? My Sim card doesn't keep stopped in the tray, if I touch it it just move. I have wiped but I haven't my pc right now to flash stock.
Click to expand...
Click to collapse
Use a good quality pen or pencil eraser on the gold contacts of the SIM and wipe clean with alcohol or dry cloth. Apply tape to the back of the SIM opposite the contacts. This is to push the SIM closer to the wire contacts in the phone. The SIM should be held very tightly by the tray and not move around. If this doesn't work, go get a new SIM from your carrier. If all the above doesn't work, then wipe the phone and reflash a full Google image using flash-all.bat SIM tray pic here.

v12xke said:
Use a good quality pen or pencil eraser on the gold contacts of the SIM and wipe clean with alcohol or dry cloth. Apply tape to the back of the SIM opposite the contacts. This is to push the SIM closer to the wire contacts in the phone. The SIM should be held very tightly by the tray and not move around. If this doesn't work, go get a new SIM from your carrier. If all the above doesn't work, then wipe the phone and reflash a full Google image using flash-all.bat
Click to expand...
Click to collapse
Well, my SIM doesn't keep held tightly by the tray. It moves even if I just touch my finger at it.
@edit
Can I use alcohol to clean the golden part of my Sim?
Then I just dry and insert it to test?
EDIT 2
My sim is working perfectly on my Shamu. Forgot to mention this.

v12xke said:
Use a good quality pen or pencil eraser on the gold contacts of the SIM and wipe clean with alcohol or dry cloth. Apply tape to the back of the SIM opposite the contacts. This is to push the SIM closer to the wire contacts in the phone. The SIM should be held very tightly by the tray and not move around. If this doesn't work, go get a new SIM from your carrier. If all the above doesn't work, then wipe the phone and reflash a full Google image using flash-all.bat SIM tray pic here.
Click to expand...
Click to collapse
This is exactly my Sim tray. The contacts (Golden part of the Sim) faces down when in the tray, right? My I just turn the tray facing down (the Sim down) the Sim just fall, so it's not being held by the tray.

Debuffer said:
This is exactly my Sim tray. The contacts (Golden part of the Sim) faces down when in the tray, right? My I just turn the tray facing down (the Sim down) the Sim just fall, so it's not being held by the tray.
Click to expand...
Click to collapse
IT CAN ONLY GO IN ONE WAY- NO, it does not LOCK into place so you can turn the tray upside down, but only will seat correctly in one orientation then you slip it into the phone. Are you kidding me?

v12xke said:
IT CAN ONLY GO IN ONE WAY- NO, it does not LOCK into place so you can turn the tray upside down, but only will seat correctly in one orientation then you slip it into the phone. Are you kidding me?
Click to expand...
Click to collapse
I meant if I position it there it still move for some little place.

Debuffer said:
I meant if I position it there it still move for some little place.
Click to expand...
Click to collapse
Not a SIM card issue.
There are possibly some settings between 7.1.1 (or older) and 7.1.2 that cause both a SIM issue and/or a Bluetooth issue.
If you have Magisk installed you might be able to fix by disabling any installed modules and wiping the cache.
Reboot and see if things are normal then re-enable the modules.
I saw this problem when I updated my phone without a complete wipe of the data (not SDCARD) partition.
If you have Magisk, try the module solution first.
Otherwise backup your data and do a clean install of 7.1.2,

tech_head said:
Not a SIM card issue.
There are possibly some settings between 7.1.1 (or older) and 7.1.2 that cause both a SIM issue and/or a Bluetooth issue.
If you have Magisk installed you might be able to fix by disabling any installed modules and wiping the cache.
Reboot and see if things are normal then re-enable the modules.
I saw this problem when I updated my phone without a complete wipe of the data (not SDCARD) partition.
If you have Magisk, try the module solution first.
Otherwise backup your data and do a clean install of 7.1.2,
Click to expand...
Click to collapse
The install from 7.1.1 to 7.1.2 was clean.
I noticed that my device imei and my Sim tray imei are different. Maybe the old user changed the device's imei or something like that. I'm trying to recover the imei via efs professional. I'll try it as soon as I arrive home.

My phone detects sim but shows no service... It detects and shows signal on jio....can anyone share efs plz so that I can try to restore efs partition...

Just came from the tech and he tested the antenna. Everything is working great with the antenna. Anyway, I can't get any signal. He said maybe there's a problem in the SIM slot, and he showed me that the 6P is dual SIM
He told me to try finding a dual SIM tray and put my SIM in the slot 2.
Someone have any idea about what to do with it?

Fixing no sim card detected and no service

Dears
Facing the problem of no service and no sim card detected on my v20 after a reboot or randomly ,i ve tried every thing and found out that the problem is coming from the sim card reader ,there is a space left between the sim card and the reader causing the problem ,the fix is to full the space with a small paper or something to force the sim card into the reader

I know this is a necro post, but I wanted to confirm that this DOES indeed work. I got a second hand V20 from eBay today and couldn't get the thing to recognize the SIM Verizon was giving me at all. Gotta go back tomorrow to have them activate it now that I know this trick works on this phone!!

ShadowEO said:
I know this is a necro post, but I wanted to confirm that this DOES indeed work. I got a second hand V20 from eBay today and couldn't get the thing to recognize the SIM Verizon was giving me at all. Gotta go back tomorrow to have them activate it now that I know this trick works on this phone!!
Click to expand...
Click to collapse
Hey, could you share a picture showing the way in wich piece of paper is placed. Thanks!

ondaparticula said:
Hey, could you share a picture showing the way in wich piece of paper is placed. Thanks!
Click to expand...
Click to collapse
I ended up sending the phone back for exchange, after a small 1" drop the SIM was dislodged and the adapter broke and got a new one which didn't have the issue, so I unfortunately don't have any pictures. The best way however to place it is to ensure that it is directly over the SIM card and goes into the slot with your SIM, it should be providing some pressure on the back of the SIM to push it into the slot firmly, but not bulge the MicroSD adapter's metal too much, if you've done that, a fall may just break your SIM reader.