Tmo variant. sim issues? - OnePlus 7T Questions & Answers

So my phone will drop to no service/emergency calls only. its been having issues im not sure why. was working earlier then started doing it again. ive restarted my phone, turned on airplane mode, reset network settings. i also took out the sim card and put it back in. can someone help

I've run into the se issue I have to reboot my pho e etc

rob420p said:
I've run into the se issue I have to reboot my pho e etc
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i went to sim settings then access point names and reset it to default by clicking the 3 dots. its working right now

Related

No sim card detected

I keep getting this notification on my rooted stock rom note 4. Sprint doesn't need a sim card to work so why would I be getting this notification? It tells me to restart my phone so that it can try and find it
Because you do need a sim card to access the 4glte but you don't need it to get 3g or make calls
Absolutely right!
I started getting this no SIM issue today too.
There is a SIM inside. I've taken the battery out and put it back in twice, nothing.
Can't connect to LTE network either.
Was there a recent update I missed that is attacking my phone?
Thanks in advance for any help, calling Sprint is always a nightmare.
Grant516 said:
I started getting this no SIM issue today too.
There is a SIM inside. I've taken the battery out and put it back in twice, nothing.
Can't connect to LTE network either.
Was there a recent update I missed that is attacking my phone?
Thanks in advance for any help, calling Sprint is always a nightmare.
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I also took out my battery, but I took out my sim card too and it seems to have fixed the problem for now.
[email protected]/Caraus on Cyanogen
I had the same problem on my S5. Could make calls. Not receive
Call or send texts. After flashing CM12. Did a Ubber.zip wipe.
Advanced full system wipe and format Data wipe. Set to download mode.
Flash stock Rom. Problem resolved. May work for the note4.
That is what I am working on now.

no sim error tmobile version ..

I have a Moto z2 TMobile version .. received it to try and fix it but it beyond my knowledge ... When u pull sim card it say no sim.when u reinsert it still says no sim card...
When u restart the phone it says nothing about missing sim or no sim at .. I have attached screen shots I have my imei and baseband not sure what else is missing that would work ...
Phone is bl unlocked not rooted currently and is on Oreo ...
Anyone know of a way to fix this or is it just a while phone permanently?
bigfdaddy2 said:
I have a Moto z2 TMobile version .. received it to try and fix it but it beyond my knowledge ... When u pull sim card it say no sim.when u reinsert it still says no sim card...
When u restart the phone it says nothing about missing sim or no sim at .. I have attached screen shots I have my imei and baseband not sure what else is missing that would work ...
Phone is bl unlocked not rooted currently and is on Oreo ...
Anyone know of a way to fix this or is it just a while phone permanently?
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Obviously, make sure you have a valid sim. You can try going to settings > Networks & Internet, click the 3dots in the right corner and reset your networks. In the same settings, you can go to Mobile network > access point names, hit the 3dot menu and reset to default. I'm not on stock, but I believe there is a setting in system settings to update carrier info, try that as well. If all else fails you might need to factory reset the phone. Have you tried another sim to see if you get any messages about sim? Again, these suggestions assume that the sim you have is good.
Happened to me on sprint moto z2 force. My fix? Extract the sim, put it again..
41rw4lk said:
Obviously, make sure you have a valid sim. You can try going to settings > Networks & Internet, click the 3dots in the right corner and reset your networks. In the same settings, you can go to Mobile network > access point names, hit the 3dot menu and reset to default. I'm not on stock, but I believe there is a setting in system settings to update carrier info, try that as well. If all else fails you might need to factory reset the phone. Have you tried another sim to see if you get any messages about sim? Again, these suggestions assume that the sim you have is good.
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Have factory reset phone ,Have reset network ,apn and all that is greyed out can't do nothing to them. Sim is still valid as Its the sim I'm currently using in my xiaomi phone ... When u pull sim out it says no sim when u pop it back in says nothing about needing a sim or invalid sim just no network besides wifi ...sim is currently installed in this screen shot ....
EddiePR said:
Happened to me on sprint moto z2 force. My fix? Extract the sim, put it again..
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I have tried that and so has TMobile store ...
Sim is currently installed and can see no network, no sim error,no invalid sim ... This the screen shot showing what it shows on my
bigfdaddy2 said:
Sim is currently installed and can see no network, no sim error,no invalid sim ... This the screen shot showing what it shows on my
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Here it is with different sim now says no sim
bigfdaddy2 said:
I have tried that and so has TMobile store ...
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What did the tmo store say? If nothing is happening it seems like the slot itself has a problem. Can you see down in the slot? Is there anything jammed in there or anything messed up?
41rw4lk said:
What did the tmo store say? If nothing is happening it seems like the slot itself has a problem. Can you see down in the slot? Is there anything jammed in there or anything messed up?
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They said only thing they could do was send it in under manufacturer warranty .. tried new sim and still no go ... Nothing is jammed in the slot or bent ..only opened sim tray on day 1 I bought it ..
bigfdaddy2 said:
They said only thing they could do was send it in under manufacturer warranty .. tried new sim and still no go ... Nothing is jammed in the slot or bent ..only opened sim tray on day 1 I bought it ..
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That's odd and it seems like a bad sim slot, defective hardware. The only other thing I can think of to try and it's a long shot is to DL the tmo app, sign in, and verify your sim number and imei on your account. I know it's active and working on the other phone, so maybe there's a glitch or discrepancy between the sim and your z2. You can dial *#06# to view your imei and the sim will have the numbers you need on the sim.

[Solved] IMEI showing as Unknown - No service

Hi everyone.
Recently I have had some issues where sim cards are not working on my phone. At first I thought it was an issue with the sim cards but when I tried the sim in a different phone, it worked fine. I tried numerous restarts, taking the sim out and placing it back in (in case there was an issue with the contacts/sim tray) but this has not solved the issue. By chance I was looking at the phone identity menu and noticed that the IMEI and the IMEI SV fields both say unknown but the device serial number is fine.
I restarted the phone into download mode and checked the System info menu and IMEI number is displayed there but for some reason it is missing in the actual android OS hence I cant connect to the mobile network to make calls etc.
This all started recent after I had come back from abroad (had been using a foreign sim) and tried to use my UK sim. Up until that point, the phone worked fine with the UK and foreign sim. After inserting my UK sim, there was no signal. I got home and tried the sim in my other phone and it worked fine.
I have not modified the phone in anyway (other than flashing an official RUU to fix a boot loop issue - see here ) and it is boot locked and not rooted. After fixing the bootloop issue, I have applied all available OTAs that my phone detected automatically which upgraded the android version to 7.0 (OS 4.28.401.3).
I have tried factory resetting using the menu (not recovery mode) and this has not solved the issue. Any ideas as to how I can fix this IMEI issue?
Many thanks
Rob
Have you checked the apn settings are correct?. Have you checked other UK sim cards in your device that are known to be working?. Do you use a simcard adapter?.
shivadow said:
Have you checked the apn settings are correct?. Have you checked other UK sim cards in your device that are known to be working?. Do you use a simcard adapter?.
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Yep.. tried other simcards thats work in other phones but they wernt working on my phone.. most likely due to the missing IMEI. I also noticed that the colour of the icons on the pulldown tray were red instead of blue and the phone was sluggish when toggling wifi on and off or entering/leaving Airplane mode.
I managed to fix the issue in the end by downloading an RRU and flashing it from SD card. Everything works ok now.
Thanks for your contribution :good:
shimozu said:
Yep.. tried other simcards thats work in other phones but they wernt working on my phone.. most likely due to the missing IMEI. I also noticed that the colour of the icons on the pulldown tray were red instead of blue and the phone was sluggish when toggling wifi on and off or entering/leaving Airplane mode.
I managed to fix the issue in the end by downloading an RRU and flashing it from SD card. Everything works ok now.
Thanks for your contribution :good:
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Hi friend, I am actually facing the same problem. can you please guide to the link of the RRU you have used to resolve the problem.
Thanks in advance.

Unlock Redmi 7 bootloader without SIM card

Hi
So before anyone tells me to just insert a SIM and be done with it, please read this first. I'm trying to unlock the bootloader so I can try flashing different ROMs and radios. I had a perfectly working global version of the Redmi 7. After a phone call, the network went off and wouldn't return.
What I've tried so far:
•Trying multiple Sims known to work
•Manual network selection (fails because it can't find any)
•Changing preferred network modes and bands with the *#*#4636#*#* menu. Nothing happens.
•Toggling airplane mode, several times.
•Factory reset, both from within the OS and from the recovery (Vol Up + Power button)
•Attempting to flash a Fastboot version of the latest global MIUI 11 ROM. This actually fails, saying that critical partitions can't be flashed or something.
•All sorts of bootloader unlock tricks, such as the older versions of MiFlash Unlock, using multiple accounts, etc.
I'm honestly stuck here. Any help in fixing my problem would be appreciated. It could be either getting the network to work, or unlocking the bootloader. I can't bind the MiAccount to the phone under developer options ->MiUnlock status or such, because it detects that there is a SIM in the phone alright, but it just can't connect to any network.
The same here %
Was the SIM card's network working before? Maybe you're just in a dead spot?
Darth Bidder said:
Was the SIM card's network working before? Maybe you're just in a dead spot?
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It was working fine for a few months. It just stopped being able to connect to a network all of a sudden. I swapped SIMs, moved to places with strong network connections (I verified with a different phone) and still nothing.
Selorm611 said:
It was working fine for a few months. It just stopped being able to connect to a network all of a sudden. I swapped SIMs, moved to places with strong network connections (I verified with a different phone) and still nothing.
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Then you probably should head to a service center to get it fixed.
what happened to this issue
Selorm611 said:
It was working fine for a few months. It just stopped being able to connect to a network all of a sudden. I swapped SIMs, moved to places with strong network connections (I verified with a different phone) and still nothing.
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hey even i am facing the same issue from yesterday, swapped sim, factory reset from TWRP and system, still its same.
Did you found any fix to this issue or sent it to service center?
Sidboy1999 said:
hey even i am facing the same issue from yesterday, swapped sim, factory reset from TWRP and system, still its same.
Did you found any fix to this issue or sent it to service center?
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I had to buy a different phone. We couldn't get anyone to fix it.
Selorm611 said:
I had to buy a different phone. We couldn't get anyone to fix it.
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Same, i did ask in service they said that they have to replace the whole PCB which will cost somewhere around 6k, so i just bought a new phone by replacing it on amazon for 5k
Same issue im having here but with a new POCO F2 pro. Since inception i was not able to get signal on it
I need to root my redmi 6a but bootloader makes a big trouble for me .for unlocking bootloader there must be sim in that device.but I doesn't have a sim card and even if I insert it, my sim board is damaged. So is there a way to unlock bootloader without inserting sim.

[SOLVED] Keep losing mobile service

I'm gonna lose my mind.
Last week I did a factory reset. Everything was great for a few days. Then as of Monday, my phone no longer connected to mobile network. (I'm on Visible, which is a Verizon MVNO.)
I tried the same SIM card in another phone, and it worked — but a different SIM card did not work in my phone. So it must be the phone, right?
I looked at About phone > SIM card status:
Network: Visible
Mobile network state: Disconnected
Service state: In service
IMS reg status: Registered
Signal strength: -113 dbm
Network Cell Info Lite app showed the nearest tower and:
SIM state: Ready
Service state: In-Service
I tried resetting network settings and restarting in safe mode, but that didn't help. Visible said to take the phone in to Samsung repair center.
So I did that. They ran a diagnostic, and said everything was fine. They said try factory reset again.
So I factory reset the phone, again, from recovery mode, wiping with cache several times.
After, service was working. Yay!
But then a few hours later, the battery died, and ipon powering back up, I AGAIN no longer have cell service!
Could it be related to adding a work profile? Enabling dev mode?
Any bloody idea what is happening??
I'm loathe to do another factory reset, as it takes me half a day to set up everything again (Work profile authentication, etc.)
Please help save my sanity.
Thanks!
Same problem.. note 10 plus n976b , after flashing stock ROM SIM goes to emergency calls only, now I am on Dr Ketan's ROM but still same problem persists...
Malik Sayriii said:
Same problem.. note 10 plus n976b , after flashing stock ROM SIM goes to emergency calls only, now I am on Dr Ketan's ROM but still same problem persists...
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I'm not even rooted. Stock rom.
Anyone??
d0g said:
Anyone??
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Try playing about with this app, it allows you to force the phone to connect to specific network bands, possible you could force it to reconnect when it drops out
Samsung Band Selection - Apps on Google Play
This app will help you access hidden network settings for forcing band selection
play.google.com
SOLVED!
I popped in a SIM from a different carrier, causing phone to restart, then put back the Visible SIM, forcing phone to re-retrieve settings.
Whew!
Couldve been a CSC issue?
d0g said:
SOLVED!
I popped in a SIM from a different carrier, causing phone to restart, then put back the Visible SIM, forcing phone to re-retrieve settings.
Whew!
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Congrats to you, but my problem didn't solved yet...
@*Detection* i have tried this app many times but didn't worked for me... maybe i have lost my IMEI & device is just showing dummy IMEI though IMEI is same after & before flashing the ROM but when i flashed the IMEI went to NULL in settings then after applying essential fix IMEI came back it also detect the sim but not picking the cellular network only showing the name of network...

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