Sim card detected but no signals when flashed android 13 ROM - OnePlus 8 Questions & Answers

Upgraded from pixel experience 11 to 13 and everything is working just fine other than the mobile data and SMS... sim is detected but there are no signals... IMEI number is showing but phone number sim name, network, and network type all are shown as unavailable
Sim working on other phones and was working on PE11 before as well... I also tried Pixel Experience 13 Plus and Lineage OS 20.0 but encountered the same issue on all 3 of them... using MSM tool works but reflashing rom causes the same issue again

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XT1033 - Sim card 1 problem (donĀ“t make calls, only internet)

A few days ago the sim card 1 began to get strange behavior and I have not changed anything on the device and even crashed or something. The device detects the sim card inserted, connects to the network and to the Internet but does not make calls (MSG: Call ended)!
Inverted the sims and the problem persists. When I put the sim card in slot 2 it works normally.
I called the operator and has no problem in the network of the region.
It will be a problem on the device?
Attempts made: hard reset, reinstall the rom, rom exchange ..
Phone: XT 1033 - Rom Android6.0.1_NX_R10.1
dude, have u tried 5.1.1 based rom? I have xt1033. this problem I've faced on every MM based rom (yah I've tried all rom). I've wrote on several post, no one answered me.
problem is weak network signal, call drop, signal lost frquently, non stable connection.
only working MM rom on dual sim model xt1033 I found just "Aosp/caf by flashhhh".
himu_joy said:
dude, have u tried 5.1.1 based rom? I have xt1033. this problem I've faced on every MM based rom (yah I've tried all rom). I've wrote on several post, no one answered me.
problem is weak network signal, call drop, signal lost frquently, non stable connection.
only working MM rom on dual sim model xt1033 I found just "Aosp/caf by flashhhh".
Click to expand...
Click to collapse
No tried. I was using the rom for about 30 days with no problems.
MoorpheusS said:
No tried. I was using the rom for about 30 days with no problems.
Click to expand...
Click to collapse
so I'm the only one who found weak signal in dual sim phone on MM build.

Hot Spot Sharing Peoblem

Recently I flashed a Rom Android 11. Unfortunately,for First Sim HotSpot cannot share. It means connecting device can't use my net. It seems to be device connected. For 2nd Slot Sim has no problem. This problem only for that particular Rom. Other Roms I checked has no problems for both sims. I'm using One Plus 6 device. No problem for sharing from OOS and Other Roms. Can any One Explain. Why I am?

SOLVED (ANDROID 12?!) SIM CARD NOT READING AFTER MSM TOOL AFTER FLASHING ANDROID 12

SOLVED!!!
(ANDROID 12?!)
PROBLEM: I have no network signal.
I successfully installed a custom rom but I noticed only one sim was working at a time which can't work for me. (not sure if that's a normal occurence for only one sim card to be working at a time.)
Used msm tool to go back to oos11 and now only one sim card is working and on the sim slot it says "no sim".
What should I do?
Solution:
After using MSM tool to downgrade from Android 12 to OOS 11, all I had to do was install the OTA available and both sims were up and running.
Same happened with me, after manual updating to oos 12 my only one sim is working but without internet signals and second sim IMEI is showing null but after downgrade to oos 11 both sims are working on my 8t.

mi 10 pro trouble

After updating to miui 13 I lost imei 2 number. This means that my device now is working on a single sim. then When I returned to miui 12 I still have only one sim working. Is there a solution to restore my device working on dual sim?

[8T] [OOS13] flashed by 9R ROM - no mobile network

Hi,
I flashed 8T DDR4 now IN variant by 9R Full ROM OOS13. Everything worked fine except for one thing - no network signal on both SIM cards. Cards are detected but have no range at all. Is it a bands issue? Originally it is KB2003 EU version, now it has IN version software.
With 8T IN Rom everything works fine.
use dial code *#36446337# restore your nv and the imei and datas fixed i had issues and went into engineer mode restored my nv reboot and worked great
Hi.
Thanks for advice.
You mean this option?

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