I updated my Samsung S24 with the latest version of OneUI/Android - build number is now UPO1A.231995.007.S921BXXU5AYA5.
Since doing that my phone is no longer able to connect to any cellular network. WiFi and Bluetooth are ok. WiFi calling works. But no 5G/LTE etc. When I go to Settings > Connections > Mobile networks > Network operators then toggle Select automatically I get the message "Error while searching for networks". This happens for both physical SIMs in the phone, both of which work fine with other phones.
I have experienced exactly the same problem with a Samsung A53 5G both when updating the phone software, or switching off Flight Mode. Both times that happened I resolved the issue by doing a factory reset which is extremely inconvenient. I actually switched to this new S24 because I thought there may be a hardware issue with the A53. But now it seems pretty clear there is a fault in the Galaxy updates.
- I have tried wiping the cache partition, as suggested on some sites and forum posts. That has not resolved the issue.
- I have rebooted the phone multiple times.
- I have turned off and on mobile data, and each of the SIM cards in SIM Manager.
- I have removed and reinserted the SIM cards.
- I have reset the Access Point Names for both SIM cards
- I have disabled and reenabled Flight mode.
- Factory reset phone and setup again.
- Switched the SIM cards.
None of the above fix the issue.
I note that there are a LOT of reports of this issue on these forums, many of which mention the issue arising after updating the software and some reporting that the cellular connection worked fine after factory reset. But a factory reset is in no way an acceptable fix. It takes several hours to restore settings, and if this happens somewhere there is no WiFi then you are out of luck.
Another common things with these forum posts is there is never any official response from Samsung.
Has anyone got any closer to understanding what is going on, or a reliable fix (that isn't one of the long list mentioned above)?
