No phone services (calls/SMS) on Pixel 4a after installing LOS - Google Pixel 4a Questions & Answers

Hi,
I bought from second hand a Pixel 4a to be able to install lineageOS (it is well supported).
When I got it, I checked the GPS, wifi,... but not phone calls nor SMS as I did not have the SIM card yet. Then I installed lineageOS (so unlocking the bootloader and proceeding the installation) before putting a SIM card.
A few days after lineageOS was installed, I got the SIM card and installed it. The SIM card is found (the PIN has to be typed at boot, the phone number is visible in the settings), but the phone do not register against my provider (Free/Proxad in France). I always get "Emergency call only".
I saw then that the lineageos installation page says that "Make sure that you can send and receive SMS and place and receive calls (also via WiFi and LTE, if available), otherwise it won’t work on LineageOS either!". My bad!
I then tried to reinstall the official image (using https://developers.google.com/android/images). I used the Factory images with the flash_all.sh script. All worked well. I even issued "fastboot flashing lock" to relock the bootloader (its state is now "locked" in green when I boot). However, even with the stock image, with bootloader locked, the pixel is still unable to use the SIM card. I tried two different SIM cards that work well in other phones. Talking with my phone provider, he does not seen the association between the SIM card and the IMEI of the Pixel.
So, I'm under the impression that the Pixel is not able to correctly register itself with the SIM card. Is it due to the fact that I installed lineageOS before puting a SIM card? It seems strange because the phone has probably be used before I bought it (the warrantly ended in december 2022, so the Pixel probably bought at least one year ago. However the OS were already updated to Android 13, so the phone must have been used).
Anyway, does someone have an idea about how to allow my Pixel to use the SIM card (so I can put calls and read/write SMS)?
Currently, my pixel has the latest stock rom with the bootloader locked. All is working but the phone (calls and SMS) part.
Regards

Related

[Q] [HELP!] Error: SIM card has locked

A few key details:
I purchased my device via Google Play.
I'm using a SIM card provided by Sprint.
I'm not rooted. This device is completely stock.
I've tried reseating the SIM card as well as Factory Data Resets.
That said, here's my issue.
Every time I boot my device, even after a Factory Reset, a while after it's been connected to 3G (it also won't connect to LTE unless auto-activation is in progress, that's a whole separate issue), it displays an empty alert box with a SIM card icon at the top. After closing that box, it displays another one that reads some error about my SIM card being locked and that I need to power cycle the device.
I've tried everything and this error is still popping up. I'll be contacting Sprint later today about the issue but I figured I'd come here first to see if anybody knows about this issue.
Pretty frustrating, Sprint sucks, yada yada... the basics. Can anybody help?
Have you tried unlocking it yourself online under your account's page?
There should be a link next to where your device is listed.
"Get my PIN1/PUK1 unlock code" should give you the required codes to unlock it.
Might also be a bad sim card.
sent from my beantastic almost retired Bionic
Does that Sim card was already activated on another device? Or did they gave you a new one?
There is a similar problem when people try to use a sim card from a current device, that will trigger that same message like yours.
Sent from my Nexus 5 using Tapatalk

N5 has No service, No data and SIM card sometimes not recognized

Heres whats going on
I have reset the N5, and flashed the July MM image. Everything flashed fine.
I insert SIM before booting, Android doesnt see SIM... so i pulled out the SIM and reinsert while on, and it sees it.
The Signal goes into an empty triangle... It says you have voicemail. And nothing else happens.
No data, no service. *#*#4636#*#* shows the right selection, it gives me the option to turn on the radio, but if i click it, nothing ever happens.
Under phone info, it sees my phone number, the IMEI is fine, and its not blacklisted when i check multiple carrier's websites.
I just cant seem to figure out why it wont just acquire service signal even when APN settings are right.
Anyone got any tips, tricks or solutions to this?
Possibly damaged sim card or sim card reader?
audit13 said:
Possibly damaged sim card or sim card reader?
Click to expand...
Click to collapse
dont think so, i think its software maybe.... When i do *#*#4636#*#* it will show my phone number on the top... if i remove SIM, the number becomes "unknown"... so i dunno
If it happens with all SIM cards, it could be a damaged sim reader as different areas of the SIM card contains different information? Not sure.
I have similar problem with MOB30P on T-Mobile network. The 4G LTE would work just fine (I can browse web etc), but the voice is where it is failing hard. I would have dropped calls along with calls not coming through (both calling out and receiving calls).
I downgraded to MOB30M and everything appears to working fine now. I have not opened any bug against Android yet, because I am not sure if I am the only one experiencing this problem.
Hi, I was googling for a problem like your one. My N5 does not recognise the sim at boot, but only if it is "hot". If I put it in the fridge for ten minutes and then reboot, all works fine until the next shutdown. I'm sure it's an hardware problem (already tried different sim) so I disassembled all the phone, and it looks perfect. With some cleaner for electrical contacts it can survive for some days, and then starts again. So sad, I don't want to change phone just for this stupid problem XD
I'm getting exact same issue with my Nexus 5 since CM13 0803 update, which brings MOB30Y to my phone I believe.
At first my phone could still recognize my carrier (China Unicom), but there is no signal.
Then I flash radio image from MOB30Y and the phone now cannot find SIM card completely.
Even reflashing factory image doesn't help.
I'm now trying to reflashing MOB30P to see if it helps.
Update to latest August security update radio and bootloader

Mi4i does has no signal with a specific and functional sim card

Hey!
I have a strange problem with my Mi4i (MIUI 7.5.2.0). The phone shows "no signal" or "emergency calls only" with a specific sim card, which works in other phones and used to work in the phone in the past.
The device works well with other sim cards too, even from the same provider. Just not with the specific sim card, which happens to be the one i would like to use. I cannot remember if the problem occured after an update (ota only).
I have tried so far, without any effect:
- a factory reset, without deleting the personal content.
- ordered and tried a new sim card from my provider
There seem to be similar threads in this forum, but they do not adress exactly my problem afaik.
Does someone has an idea what else i can try? I will provide further information if needed.
Thanks in advance!
realsatnav said:
Hey!
I have a strange problem with my Mi4i (MIUI 7.5.2.0). The phone shows "no signal" or "emergency calls only" with a specific sim card, which works in other phones.
The device works well with other sim cards too, even from the same provider. Just not with the specific sim card, which happens to be the one i would like to use.
I have tried so far, without any effect:
- a factory reset, without deleting the personal content.
- ordered and tried a new sim card from my provider
There seem to be similar threads in this forum, but they do not adress exactly my problem afaik.
Does someone has an idea what else i can try? I will provide further information if needed.
Thanks in advance!
Click to expand...
Click to collapse
Might be an unsupported band. What phone have tried the sim with?
Thanks for reading . Oneplus One, iPhone 5C. Sorry i forget to tell the sim card worked in the Mi4i. I didn't use the phone for a while and i might have updated it (ota) when i turned it on again recently. I guess the problem persists since then.
Any chance the update caused it?
did a full wipe and reinstalled miui (7) in fastboot mode. no change. the sim card works fine with other phones. the phone works with other sim cards fine too. just not with my main one

SIM hacked/infected - reflashing does not remove it

Hello XDA.
Over the last three months, my phone has been regularly sending SMS's to a number in Singapore. Of course this is not something I have had anything to do with.
I have an LG G3 (D855) phone running Android 6.0_EU. My phone has been rebooting itself numerous times a day with the message that the SIM card was removed. It starts back up and usually works without a hitch. Checking my carriers log, I see that every reboot correlates to a sent text to Singapore at the exact time the phone was booting up again.
There is absolutely no evidence as far as I can tell that these messages are sent from my phone.
As I only just recently discovered this, I started investigating. I flashed my phone with a 6.0 KDZ from a thread on this forum, but it still rebooted afterwards and sends texts. I placed my SIM into my wifes D855, and it started experiencing the same issue. When we placed her SIM back into her phone, we could see that her phone number had ALSO started sending texts to Singapore.
We flashed her phone, put in a completely fresh SIM with an unused phone number, and that number started sending texts as well.
This leads me to thinking that there was a virus or malware on my own SIM and phone which then was tranferred to my wifes phone via my SIM and then from her phone onto the fresh SIM.
My question is this:
Has anyone ever heard of a malware/virus capable of replicating itself in such a degree that it exists on SIM cards and on the phone while it survives reflashing a stock ROM?
Also, is there any way to competely, and i mean completely wipe a phone so a bootkit is removed as well?
I hope there are some wise heads out there who has any idea regarding this.
According to Google there aren't really an precidences of what we are experiencing.
Infection has now been removed
Persistent memory can be a nuisance.
Confirmed infection has been removed by two days of inactivity on a fresh SIM-card by doing the following:
Rooted the phone using KingRoot and a guide here on XDA
Installed the custom Recovery TWRP
Installed the Lineage OS 7.1.1 custom Firmware
Through this, we can with a 95% certainty determine that the virus/malware resided in the recovery partition and the reflash of stock ROM did not flash the recovery partition.
In fear of being reinfected, I have not inserted an infected SIM into the new environment test test, whether or not it would be reinfected.
I hope this helps anyone who may experience this gnarly situation.

Question S22 Ultra: SIM card required to start setup (T-Mobile version from Samsung.com)

Hi. I received my Samsung Galaxy S22 Ultra 5G smartphone, which I ordered from Samsung.com (I chose the T-Mobile version when ordering). After turning on the phone for the first time, at the Welcome screen, when I click the Start button, I get the message, "Insert SIM card from your service provider for network service."
I can't find a way to bypass this message. I was initially thinking if I could connect to my WiFi, it'd go away, but there's absolutely no way to connect to WiFi or access any settings.
I upgrade my smartphones every 15 months and have had T-Mobile for nearly a decade, and this is the first time I've seen such a thing during setup. I like to keep my SIM card in my current smartphone until the new one is fully set up, at which point I would transfer the SIM card over. I have a lot of services I use that rely on SIM card (i.e., not fully cloud-based and are tied to the SIM card), and not having that service during setup may be an issue. Also, I have received brand new phones that have had issues in the past (e.g., poor battery life, screen problems), so I'd rather fully test the new phone before transferring my SIM over.
The workaround I thought of: Put in a temporary T-Mobile SIM card, just to complete the setup process. Once setup has completed, I'll put my actual SIM card into the phone, or have T-Mobile transfer my phone number to the new SIM card. Thoughts?
Thank you.
It's because you got the T-Mobile phone so it wants you to connect to the network first before using it or continuing with setup. A way to get around that is to install the u1 firmware.
IIRC you can hold the volume down button for 5 seconds at the sim required screen to bypass the requirement. There's a help article somewhere that documents this.
As far as I know, Samsung requiring a SIM card during initial setup has been around for a long time. Nothing to do with your carrier. Even my unlocked phone from Samsung required a SIM card on first boot before continuing. There are of course ways around that, but beware. I bypassed the SIM card requirement setting up my S21 Ultra and spent a day configuring it to my liking. Then I popped the SIM card in from my old phone and it caused a factory reset erasing all my hard work. Probably because my carrier wanted to install all their software and settings. Not saying the same thing will happen to you, but just something to be aware of.
Here is the link to the eSIM setup (bypass SIM requirement)
Samsung eSIM to eSIM first time use
Visit T-Mobile Support for help with phones & internet devices, plans & services, billing, and more!
www.t-mobile.com
Sticking a SIM from another carrier after eSIM set up should not cause a hard reset under normal circumstances, it does cause a reboot into bootloader to deploy the new carrier specific customizations from cache, but this is supposed to be transparent to user data. It broke if it caused a hard reset ;\
Da_G said:
IIRC you can hold the volume down button for 5 seconds at the sim required screen to bypass the requirement. There's a help article somewhere that documents this.
Click to expand...
Click to collapse
Technically, this worked, but this burned me badly. I appreciate the workaround, but I highly recommend against it. See below.
SloPoke23 said:
I bypassed the SIM card requirement setting up my S21 Ultra and spent a day configuring it to my liking. Then I popped the SIM card in from my old phone and it caused a factory reset erasing all my hard work. Probably because my carrier wanted to install all their software and settings. Not saying the same thing will happen to you, but just something to be aware of.
Click to expand...
Click to collapse
This is exactly what happened to me on the Samsung Galaxy S22 Ultra. This is literally the most annoyed I have ever been at an electronic consumer device.
I spent over 21 hours over the span of 6 days setting up the phone. I put in the SIM card and was presented with a message stating, "SIM card detected. Restart your phone to start using your new SIM card." I could not use the phone at all, so my only option was to restart. After I hit the Restart button, the phone restarted. For less than 3 seconds, it showed a black screen with a small Android logo, with the small text "Erasing." Then the phone started up and everything is as if it's a brand new phone. Everything I've spent time working on is all gone.
Hello Team, important information, when it is asking for the carrier sim card, you need press volumen up + volumen down + power button at the same time for few seconds, then it will say a message like "Unlocked" then proceed with the first configuration.
This is for people who is going to use with a different provided, please let me know if you heard or read this info in another link (because i did not find that)

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