No SIM card - No service after Android 8.1 - Oreo Update - Essential Phone Questions & Answers

Hello everyone,
I am new to the forum and I would like to reach out to you guys to see if anybody can help me with an issue I am having with my Essential PH-1 phone after updating it to the latest version of Android. Basically the issue is that the system won't recognize my SIM card after the update, it just says "No SIM card - No service".
I've tried so many things already but haven't had any success, here is a list:
-> Rebooted several times.
-> Cleared cache.
-> Reset network settings.
-> Did a factory reset.
-> Rolled back to Android 7.1 (SIM card works) then updated it back to 8.1 (SIM stops working).
What's really funny though is that my girlfriend has the exact same phone, from the same carrier and she was able to update her phone to Android 8.1 without any problem. I also tested my SIM card on her phone and it works fine too.
Has anyone else experienced this issue? Any ideas on how to troubleshoot it?
Thanks,
Mike.

mpetry90 said:
Hello everyone,
I am new to the forum and I would like to reach out to you guys to see if anybody can help me with an issue I am having with my Essential PH-1 phone after updating it to the latest version of Android. Basically the issue is that the system won't recognize my SIM card after the update, it just says "No SIM card - No service".
I've tried so many things already but haven't had any success, here is a list:
-> Rebooted several times.
-> Cleared cache.
-> Reset network settings.
-> Did a factory reset.
-> Rolled back to Android 7.1 (SIM card works) then updated it back to 8.1 (SIM stops working).
What's really funny though is that my girlfriend has the exact same phone, from the same carrier and she was able to update her phone to Android 8.1 without any problem. I also tested my SIM card on her phone and it works fine too.
Has anyone else experienced this issue? Any ideas on how to troubleshoot it?
Thanks,
Mike.
Click to expand...
Click to collapse
Where did you get the phones (hers and yours since you specify a diff)?
Did you try the unlock on this thread.
What carrier SIM are you using?

I haven't had that issue on this phone. When I previously encountered it (on the Pixel XL?) I powered my phone down, removed the SIM card, booted the phone up into Android with no SIM, powered back down, inserted the SIM and powered back up.
When you did the factory reset did you restore your phone from a Google Cloud backup? If you did you might have also restored the data that was causing your problem. Choosing the fresh start option instead of restoring from a backup is a much better idea.

Me too, with some added info
mpetry90 said:
Hello everyone,
What's really funny though is that my girlfriend has the exact same phone, from the same carrier and she was able to update her phone to Android 8.1 without any problem. I also tested my SIM card on her phone and it works fine too.
Mike.
Click to expand...
Click to collapse
Might try having your girlfriend power cycle her phone.
I'm having the exact same issue with phone, Sprint service, except it did not manifest itself until a few days after the update when I power cycled the phone as the youtube app locked everything up.
I tried the advice above by the original poster, and the second poster, less the factory reset, to no avail.
Still looking for a fix. May revert to the prior version if I can figure out how to do that.
Troy.
#

tech_head said:
Where did you get the phones (hers and yours since you specify a diff)?
Did you try the unlock on this thread.
What carrier SIM are you using?
Click to expand...
Click to collapse
I am with a Canadian carrier called TELUS. I assume my phone in unlocked already because before the update I tested it with SIM cards from different carries and they all worked fine.
jhs39 said:
I haven't had that issue on this phone. When I previously encountered it (on the Pixel XL?) I powered my phone down, removed the SIM card, booted the phone up into Android with no SIM, powered back down, inserted the SIM and powered back up.
When you did the factory reset did you restore your phone from a Google Cloud backup? If you did you might have also restored the data that was causing your problem. Choosing the fresh start option instead of restoring from a backup is a much better idea.
Click to expand...
Click to collapse
Yes, I did a fresh install, multiple times actually and it still didn't change anything.
frericks said:
Might try having your girlfriend power cycle her phone.
I'm having the exact same issue with phone, Sprint service, except it did not manifest itself until a few days after the update when I power cycled the phone as the youtube app locked everything up.
I tried the advice above by the original poster, and the second poster, less the factory reset, to no avail.
Still looking for a fix. May revert to the prior version if I can figure out how to do that.
Troy.
#
Click to expand...
Click to collapse
Have you tried manually installing one the current builds from the manufacturer's website? That is what I plan to do next but haven't had the time yet...

mpetry90 said:
I am with a Canadian carrier called TELUS. I assume my phone in unlocked already because before Have you tried manually installing one the current builds from the manufacturer's website? That is what I plan to do next but haven't had the time yet...
Click to expand...
Click to collapse
I just did a SETTINGS/SYSTEM/RESET-OPTIONS/RESET-WIFI-MOBILE-BLUETOOTH.
It was fast, then I restarted. That worked for me!
Troy.
#

This also happened to my wife's phone. It just started not recognizing the SIM card on Thursday the 19th. I tried a soft reset, a hard reset, removing and reinstalling the SIM card, updating the Profile and the PRL, all to no avail. I took it to the Sprint store, and they had no fix for it but gave me a code to dial ( *#*#72786#*#* ) that gives you some service for a short while. I finally had to file an insurance claim on it and had them send me out a new phone. I will not be updating to Oreo until they push out a fix for this...

Hey guys,
Just wanted to give you an update on my issue, not sure which one of these things helped but this is what I ended up doing and it seems to be working fine now:
-> Rolled back to Android 7.1
-> Reset Wi-Fi, mobile & bluetooth settings
-> Reset app preferences
-> Downloaded & install android 8.1 oreo update
-> Took out SIM card and restarted the phone
-> Connected to wi-fi
-> Inserted the SIM card and now it has been working fine

mpetry90 said:
Hey guys,
Just wanted to give you an update on my issue, not sure which one of these things helped but this is what I ended up doing and it seems to be working fine now:
-> Rolled back to Android 7.1
-> Reset Wi-Fi, mobile & bluetooth settings
-> Reset app preferences
-> Downloaded & install android 8.1 oreo update
-> Took out SIM card and restarted the phone
-> Connected to wi-fi
-> Inserted the SIM card and now it has been working fine
Click to expand...
Click to collapse
Glad to hear it's now working.

I have the same problem first with [ROM][8.1.0][trlte] Resurrection Remix 6.0.0 [20180425][OFFICIAL]. I took out the SIM card and inserted it back to the older Note II runing RR 5.8.5, it works!
Then I installed lineage-15.1-20180427-UNOFFICIAL-trlte.zip from https://basketbuild.com/devs/ripee/trlte [20180427 today], again, NO SIM CARD!
I noticed that both RR and Lineage Oreo 8.1 have the same problem at the first time system reboot: they both ask for inserting SIM card even though the SIM card was already inserted. I have never had such an issue in the countless ROM changes with earlier versions. Since current RR also use Lineage Oreo 8.1, I think the problem most likely comes from the Lineage Oreo 8.1.
---------- Post added at 07:28 AM ---------- Previous post was at 07:01 AM ----------
Quote:
Originally Posted by mpetry90
Hey guys,
Just wanted to give you an update on my issue, not sure which one of these things helped but this is what I ended up doing and it seems to be working fine now:
-> Rolled back to Android 7.1
-> Reset Wi-Fi, mobile & bluetooth settings
-> Reset app preferences
-> Downloaded & install android 8.1 oreo update
-> Took out SIM card and restarted the phone
-> Connected to wi-fi
-> Inserted the SIM card and now it has been working fine
I don't get it. Just realize I may be using a different phone (Galaxy Note 4). This method won't work.

I have a Motorola (Moto G5 Plus) and also had this problem. For me it occurred after 1st power down/up after update to Oreo 8.1 (from 8.0). Note that my phone has a dual sim (which I guess might be important here).
This is what worked for me
Settings → system → reset options → reset wifi, mobile, bluetooth.
Turn off the phone
remove sim
Start the phone.
Settings → network → SIM cards → enable Slot 1.
Then the screen with PIN-unlock was finally shown. I just needed to enter the PIN and it now works.
So thankfully didn't need to reset the system or even application settings. Just needed to enter my WiFi password again after all that.

Essential PH-1 SIM Card Problem
I discovered there is an information tag in the SIM Slot (it's got the texture of a mattress tag) the tag has FCC and Consumer Compliance Information printed on it. In my case, when I slid the SIM card into the SIM slot the tag got between the SIM Circuit and the SIM reader. I blew out the SIM Slot with canned air and the tag extended out the SIM slot. I tugged slightly on the tag. It's firmly attached at the top of the Sim slot. When I slid my SIM card back in I had a connection. I contacted Essential and they confirmed that the tag is there and said the tag shouldn't be a problem, but I think in many cases it might be. Essential said I could remove the tag if it interferes with the SIM connection.

I've been having this problem with the newest Android 10 update after about a hour of installation. I'm running twrp with stock Android tried resetting the connections, restarting the phone, and pulling the Sim tray and reinserting. The only thing the fixes the problem is wiping the phone and reinstalling. I'm currently back to running the last build. Anyone else having this problem?

Related

[Q] SIM Card issue

Hi all,
I have a strange issue that I don't know how to fix.
This evening while using my phone I suddenly got SIM card not recognized message. I have tried these things to no avail:
-In "Settings" I can find my networks but my phone won't connect on them
-Powering down, pulling my SIM card out and reinserting it. No change
-Since I'm on CM12 I did factory reset and rolling back on previous versions of Nightly's. Still no change
-Again doing factory reset and installing SlimKat 9.0. No change
-Rolling even more back after another full wipe to SlimKat stable 7.0. Still got "Insert Sim Card"
I have flashed latest modem and bootloader when I migrated from SlimKat to CM12 since I was loosing signal when locking phone and that worked all until this evening.
Can anyone help please?
EDIT:
The model is GT-I9505 jfltexx
Update:
Just installed, again, 2/3G and LTE modems... no change
Inserted SIM card fro my wife... no change
You likely have a hardware issue. But before you go and replace the SIM card slot, revert to a stock ROM and see if that resolves the issue. Start with stock 4.4.2 and see if that works, then roll back to stock 4.2.2 if it doesn't. With luck, rolling back to one of the stock versions will resolve your problem. If it does, then you should be able to migrate back to SlimKat. If it doesn't, it will cost you about $10 USD (€9.41, BAM/KM18.35).
I encountered the same issue, and in my case not only was the SIM tray damaged but I had also lost my SIM unlock. Only by downgrading to 4.2.2 was I able to figure out that the SIM unlock was gone, but it wasn't until I had replaced the SIM card slot that I could do something about it.

No Service with Sim Card Inserted

A few days I woke up with no service on the Nexus 6p. This was a few days after updating to the latest oreo build. Sim card seems detected because when I take it out another message shows up "No SIM card - No service", and when I put it back it only shows "No service". Tried putting the card in a Nexus 5X and it works fine.
Tried the following with nothing working so far:
- Switching 2G/3G/LTE and rebooting in between.
- *#*#4636#*#* and turning off the radio, switching between the different options of GSM/LTE/etc...
- Restoring a working nandroid backup
- Reflashing different ROMs
- Factory reset
- Factory reset then flashing ROMs
- Wiping cache and dalvik
- efs fix in twrp
Hardware version ANGLER-VN2
IMEI shows up under IMEI information tab but not under SIM Status tab, there it shows not available.
I live in Ontario Canada, carrier is Freedom mobile.
So now I'm stuck, tried calling google and hwawei and they won't do an RMA because my warranty is expired.
Anyone has any ideas to try?
Thanks in advance.
Not that this is going to help, but this has GOT to be an Oreo issue, myself as well as at least 4 others that I have seen has been getting the No service, or No Sim, mine did the No Sim, then started bootlooping.
---------- Post added at 07:36 AM ---------- Previous post was at 07:06 AM ----------
https://www.theandroidsoul.com/fix-...d-wifibluetooth-issues-restoring-twrp-backup/
No this has nothing to do with O.
Which version phone do you have? H1511 or H1512?
What country are you in now?
What is your carrier? If MVNO state that.
Are your IMEI and phone numbers showing up in settings?
Everyone, please put the most basic information in your profile like where you live, which carrier you are currently on, and maybe even which variant of your phone.
I updated the first post with more info. How do I tell if I have H1511 or H1512? I bought it from the google store in Canada.
More information is good. Please update your XDA profile so the next person trying to help can check there first. You can find the device variant by booting to bootloader (not recovery) and using the vol toggle to navigate to "Barcodes". IMEI should show up there too. Date of manufacture, Serial #, etc. I think you should have started a normal thead, not Q/A, BUT your IMEI and a lot of other information should be showing up under SIM info. That's a problem. Second, you say you did the EFS fix in TWRP. Can you explain how you did this? Did you use one of YOUR OWN TWRP backups which contained the modemst1,modemst2 and restored ONLY those two partitions to your device? Did you receive any confirmation or error? Have you tried using a SIM from a Rogers or Telus in your phone to see if the SIM info shows up?
Thanks for the help, I'll update my profile with this info as well.
in the bootloader the IMEI shows up along with the rest of the info. It's a H1511 device.
The EFS fix is by following this: https://www.theandroidsoul.com/fix-empty-imei-corrupted-efs-no-sim-unknown-baseband-wifibluetooth-issues-restoring-twrp-backup/
is modemst1 and 2 contained in the twrp backup? and if so how do I restore it? in restore options there's system, data, vendor and boot only. I guess it's an option in the backup that I haven't selected?
I tried another SIM also from freedom and it didn't work. I don't have a Rogers or other SIM to try currently.
Right, so if you didn't ever select the EFS partitions when using TWRP Backup, you never backed them up so under Restore they don't show up (so you can't use that method). You can however use TWRP terminal or fastboot to wipe those and reboot. I would be sure to try at least one SIM from either Rogers or Telus. If that doesn't work, then wipe the EFS partitions and let them rebuild (hopefully).
Definitely Oreo issue. Google messed with something and it broke data for many people. I have been troubleshooting this for the last week (Verizon, US, fully stock 6P) and finally found a thread where a Google rep acknowledged the problem and said it was high priority for a fix.
I wish you luck with that one @LucJoe. This has been happening for the past 2 years from MM, N, and now O...and XDA is full of threads (just look). So you just go ahead and wait for Google to fix it for you, LOL. - Not a new issue related to O.
Never happened to me before updating. The data issues manifest differently across different carriers but for some reason Oreo likes to play it safe and disconnect data. I have not been able to get LTE for more than a couple seconds, but will get slow unstable 3G occasionally. Google confirmed the issue here: https://productforums.google.com/forum/#!msg/phone-by-google/kw3ZcXd1BVs/7HYuANdoAgAJ
A recent success using terminal from TWRP (or the OS if you are rooted). You can also use fastboot to do the same thing using the commands in the article posted in this Q/A (method 2). Good luck! See thread here.
This seems like it's a different issue described in that thread. I'm not running out of data, there's no service and no connection of at all to any network.
I did find that and try it before posting here. It did nothing to fix the problem. It did say that something was copied over '4 MB copied, at 14.3 MB/s' something like that but nothing changed.
I also have the same issue. Have tried everything including going back to stock 7.1.2 & locking the bootloader. Nothing seems to work. Interestingly, when i pull up the hidden phone diagnostic menu, it shows all cell measurement info which means that the antenna is receiving signals but the phone somehow is not registered on the network?
I can wipe those partitions with fastboot but is it safe? I have never used TWRP and my problems started after updating to Oreo. Is there a chance the official OTA could corrupt those partitions?
@LucJoe- That fix is not for you. That is for users who have no IMEI or phone number under About Phone>>SIM info. Your issue (as I understand it) is a weak and intermittent signal that keeps disconnecting LTE and sounds like a carrier or SIM issue. Why not go get a new SIM provisioned for your phone. That or pop somebody else's SIM in your phone and see if you get a different outcome.
Yes that was my first thought as well. I got a new SIM, then another one. So 3 SIMs now with the same result. I've been on the phone with so many techs from Verizon/Total Wireless and none of them have any answers. If I put the same SIMs into a Moto E4 I picked up for testing, it works fine. But the 6P immediately disconnects from LTE then bounces between 3G/1X.
My next test is to try a SIM from a different network I guess... maybe Verizon is blocking my 6P. Or maybe my LTE radio is damaged somehow.
So I did this using TWRP but wasn't sure if it actually went through or not. I did it now through adb from pc and also fastboot and it says permission denied. Any idea how to bypass that?

Sim card not detected

Hey, I've had my Moto X Pure (XT1575) for a bit over a year now, and it's been great up until I updated it to 7.0 a week ago. It has been saying "No SIM card" and I have been unable to do much with it. Rebooting the phone will fix the issue and cell service will work for for about 5 minutes, then it disconnects again. Taking the sim card out and putting it back in will also fix it for about 5 minutes. I have cleaned the sim card and port, but that has not helped. I have also tried factory resetting the phone but the issue is still there, even during setup. The phone is running stock android with a locked bootloader. Any help would be greatly appreciated.
Replace the SIM card...
Check if another SIM card is working fine with the phone or not. If yes, then you need to follow what acejavelin has suggested above.

Nokia 6(TA-1000) cellular network not work after Android Oreo

I just upgrade my Nokia 6(TA-1000) to official Android 8.0.0 (Oreo).
Then my Cellular network won't work anymore.
I live in Hong Kong, using sim card service "CMHK".
I think it is LTE/WCDMA mode.
Tried "*#*#4636#*#*" and changing the settings.
But the connection always shown IPv4: Failed(2)
The phone notification show it is connected and running 3G network.
But the upload/download speed is always 0KB/s.
Reset to factory setting already.
Before upgrade Android everything work fine.
Anyone have the same problems?
Now, what can i do....?
It seems I can't even downgrade my Android.
Only, have to wait for next update and hope it will fixed?
I think i am screwed.
Alvin Fung said:
I just upgrade my Nokia 6(TA-1000) to official Android 8.0.0 (Oreo).
Then my Cellular network won't work anymore.
I live in Hong Kong, using sim card service "CMHK".
I think it is LTE/WCDMA mode.
Tried "*#*#4636#*#*" and changing the settings.
But the connection always shown IPv4: Failed(2)
The phone notification show it is connected and running 3G network.
But the upload/download speed is always 0KB/s.
Reset to factory setting already.
Before upgrade Android everything work fine.
Anyone have the same problems?
Now, what can i do....?
It seems I can't even downgrade my Android.
Only, have to wait for next update and hope it will fixed?
I think i am screwed.
Click to expand...
Click to collapse
Why dont you hard reset your device, this could help you
Hard reset is done by recovery menu.
Hope this couls work for you
sltushar said:
Why dont you hard reset your device, this could help you
Hard reset is done by recovery menu.
Hope this couls work for you
Click to expand...
Click to collapse
I already do factory reset on System Settings.
I think it is the same as reset on recovery menu.
It still Android 8.0.0 and problem still exists.
Alvin Fung said:
I already do factory reset on System Settings.
I think it is the same as reset on recovery menu.
It still Android 8.0.0 and problem still exists.
Click to expand...
Click to collapse
No, there is a lot difference between system reset(soft reset) and recovery reset (hard reset)
Try it, may be it solve your problem
sltushar said:
No, there is a lot difference between system reset(soft reset) and recovery reset (hard reset)
Try it, may be it solve your problem
Click to expand...
Click to collapse
Tried. No luck, the problem still exists.
It seems you ****ed up modem firmware. What's the baseband version and build number from About?
Alvin Fung said:
I just upgrade my Nokia 6(TA-1000) to official Android 8.0.0 (Oreo).
Then my Cellular network won't work anymore.
I live in Hong Kong, using sim card service "CMHK".
I think it is LTE/WCDMA mode.
Tried "*#*#4636#*#*" and changing the settings.
But the connection always shown IPv4: Failed(2)
The phone notification show it is connected and running 3G network.
But the upload/download speed is always 0KB/s.
Reset to factory setting already.
Before upgrade Android everything work fine.
Anyone have the same problems?
Now, what can i do....?
It seems I can't even downgrade my Android.
Only, have to wait for next update and hope it will fixed?
I think i am screwed.
Click to expand...
Click to collapse
Have you tried other SIM cards, whether you work in your cell phone! Tried to register your network operator service in the settings! Set preferred network ~
---------- Post added at 11:04 AM ---------- Previous post was at 10:57 AM ----------
Have you tried other SIM cards, whether you work in your cell phone! Tried to register your network operator service in the settings! Set preferred network ~
qwertysmerty said:
It seems you ****ed up modem firmware. What's the baseband version and build number from About?
Click to expand...
Click to collapse
I use official update.
All firmware should be correct?
BTW, I get a new sim card from ISP but cellular network still not working.
Also, tried both sim card slot 1 and slot 2 nothing work.
May be new system not compatible with my SIM card service only which is "CMHK" aka "中國移動香港".
Hope next update will fix that...
Device name:
Nokia 6
Model
TA-1000
Android version
8.0.0
Android security patch level
January 1, 2018
Baseband version
MPSS.JO.3.0-00387-8937_GENNS_PACK-1.124813.1.126605.3
Kernel version
3.1.8.66-perf
Fri Jan 12 19:48:46 CST 2018
Camera firmware version
V100.0230.05
V010.0210.10
Touch panel firmware version
ilitek-V10010
Goodix-v1.05.29-HV
Build number
00CN_5_210
Baseband version looks good. I was just wonder if your ta-1000 ever had ta-1003 firmware installed. Don't know what's wrong with radio on your phone, sorry.
I have same problem in my Nokia 6 TA1003 after upgraded to 8.0
The CMHK sim in sim 2 slot the cellular network can work. sim 1 slot install other ISP sim card is no problem.
Just put the CMHK in sim 1 slot only run 3G voice services and cellular network not work.
NOKIA 6
hi,
i updated my nokia 6 TA-1000 to oreo update.
i faced many issues like lte not working.
in battery saver mode launcher is stopping suddenly.
it is not detecting the sim correctly.
i didnt get network signals correctly.
Then i tried to hard reset my mobile ,after complete reset and after rebooting it stopped at language selection,i clicked lets go many times but it is not working .it got stucked there.
is there anyway to get rid of it.i asked for nokia chat support but they are asking me to take mobile to nearest service center.
if there is any solution please guide me with it .thank you in advance.
I just turn off the cellular network yesterday.
After I wake up from bed, my phone Google service can not connect from wifi(can't use email, Google store).
BUT! After reinsert my sim card and turn back on cellular network, everything working now.
Both 4G cellular and Google service all good.
May be some part of the network is cached.
So, if you encounter this problem just turn off cellular network and wait.
BenSo2111 said:
I have same problem in my Nokia 6 TA1003 after upgraded to 8.0
The CMHK sim in sim 2 slot the cellular network can work. sim 1 slot install other ISP sim card is no problem.
Just put the CMHK in sim 1 slot only run 3G voice services and cellular network not work.
Click to expand...
Click to collapse
It seems that, the old slot 1 cached your sim card.
So, you change to slot 2 work, but you can't use SD card.
And I found that if you wait a long time the cache will clear.
You can try to insert sim card back to slot 1 after 1-2 days.
gamez cliq said:
hi,
i updated my nokia 6 TA-1000 to oreo update.
i faced many issues like lte not working.
in battery saver mode launcher is stopping suddenly.
it is not detecting the sim correctly.
i didnt get network signals correctly.
Then i tried to hard reset my mobile ,after complete reset and after rebooting it stopped at language selection,i clicked lets go many times but it is not working .it got stucked there.
is there anyway to get rid of it.i asked for nokia chat support but they are asking me to take mobile to nearest service center.
if there is any solution please guide me with it .thank you in advance.
Click to expand...
Click to collapse
The only option was left to flash stock firmware, but as it updated to oreo, its bootloader has also been updated so I will suggest you to wait for official oreo firmware to release, please don't try to downgrade your device for now, it can brick your device very badly, keep patience, if any solution will come out, we will definitely tell you
Sim detecting issues of Nokia 6
Have you got it fixed now?
I'm also having the same problem, and tell me how did you do it?
Nevklear said:
Have you got it fixed now?
I'm also having the same problem, and tell me how did you do it?
Click to expand...
Click to collapse
Yes, I got it fixed...
1) Just turn off your cellular network.
2) Wait for 1-2 days.
3) Turn on your cellular network again, it should work.
How can I off cellular network. Will keeping it in flight mode helps?
Alvin Fung said:
Yes, I got it fixed...
1) Just turn off your cellular network.
2) Wait for 1-2 days.
3) Turn on your cellular network again, it should work.
Click to expand...
Click to collapse
Thank you for raising this question. My phone got the same problem. I am just wondering if I should send it to maintenance center but I guess they will just do reset.
And by saying "turn off cellular network and wait for 1-2 days", do you mean by just turning off the data usage, or turning it to flight mode/ turning the phone.
Nevklear said:
Have you got it fixed now?
I'm also having the same problem, and tell me how did you do it?
Click to expand...
Click to collapse
I just read a comment from a forum in HK and some members find a way to fix the problem. I tried it and it is successful.
{lihkg.com/thread/544787/page/1?ref=web&post=20}
i face same problem .. Nokia care told me that your phone motherboard problem

"No SIM card detected" & "No service"

Hi all,
I have a problem with my XC, i hope there's someone here who could help me out with this .
I get a SIM card error when i start the phone. After a while (5-10 mins) the error transforms into "No Service" as if the phone now detects the SIM card but has no service whatsoever.
Things i did to my phone prior to this:
- unlocked bootloader
- installed custom recovery
- root
- installed custom ROM
- drm fix
The phone did function properly for a few months actually after these operations without a SIM card error even once. But then i tried to install custom ROMs again (and i'm sure didn't flash ROMs not suited for XC) -actually tried to install "existenz" ROM but i did get a bootloop so i -once again- did the usual procedure with flashtool and flashed a firmware to set everything back to stock as close as possible. That was, when i started to get the SIM card errors. After several restarts (cold and warm) the phone sometimes recognized the SIM card and i could use the phone normally. But this was true only till the next restart, where i got the same SIM errors again.
Things i tried:
- flashed several different firmwares (official) with flashtool (wiping everything) - all the newest firmwares.
- *#*#72786#*#* in dialer to wipe carrier settings
- *#*#4636#*#* in dialer to go into phone settings and changing those settings randomly
- flashed another AOSP based custom ROM instead of stock sony
- wiping and formatting everything between the flashes of course
- cleaning and re-inserting SIM card (which i never took out before anyway)
But unfortunately nothing worked. Phone keeps to not recognizing the SIM card (which is working just fine in another phone). Everything else works just fine on the phone. The IMEI is displaying correct. I'm almost certain that the fault isn't hardware-based (i didn't drop the phone or exposed in water etc.) but software-based. Did i just managed to brick my phone by flashing something related to the modem which i'm not aware of?
I can't find any solutions on google, which help me, which is why i'm posting it here. Sorry for the long post.
Did anyone experience such an error and/or knows what else i could try to fix this? I hope for answers
Thanks in advance!
Anyone?
I've got the same problem.
I didn't unlock the bootloader or anything prior to getting the bug.
I wanted to downgrade to nougat, because aparently it helped someone in the forum below, but I didn't manage to do it.
https:// de.ifixit. com/Antworten/Ansehen/468864/Sim+Card+not+picking+up+mobile+network.+Possible+software+issue+(Oreo)
Did you try nougat, when flashing different firmwares?
Your post makes me question if its worth it, trying to downgrade.
Try to remove sd card if you have one. then restart the phone and see if sim card is recognized.
I had the same problem and I think it was a hardware failure in the end.
I also tried almost all the things you were writing above. In my phone it started slowly. Sometimes the SIM was detected but after some time the connection was lost.
It happened some time after I installed a new battery.
But since there are no original batteries available for the device anymore and the new battery was even worse than the 5 year old original battery, I gave up investigating the SIM issue and don't use the phone any longer.
I bought a new (used) x compact because I still like the size and I saw some development was going on for this device.
In the end I cannot tell whether the SIM was not detected because I broke something while changing the battery or due to age of the phone but I think it was a "normal" failure.
I also read from others that they had the problem and the SIM was working for some time after I switched the battery before it stopped working.
Nevertheless. Good Luck to you. Maybe it is something different on your phone.

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