Upgraded my Mi 10 Pro (cmi) from V14.0.3.0.TJACNXM_v14-13 to V14.0.4.0.TJACNXM_v14-13.
After the upgrade, 5G no longer functions. I'm using a Swedish (Europe) carrier, specifically Telia/Fello. While 5G is still visible in all the menus/settings, attempting to manually search for networks only lists numerous carriers offering LTE, 3G, and GSM/EDGE-networks, with no 5G networks in sight. My phone is located in Sweden's largest city, where 5G coverage is typically excellent (and I've confirmed this with another device on another carrier/sim).
To troubleshoot, I performed a complete backup using TWRP, downgraded to V14.0.3.0.TJACNXM_v14-13, and wiped all data. With this previous version, 5G coverage was excellent once again, and a manual network search revealed many carriers offering 5G networks. However, upon upgrading this clean install to V14.0.4.0.TJACNXM_v14-13, the same issue reappeared.
(Fortunately, I was able to restore my settings and app data successfully after this troubleshooting.)
My best guess is that Xiaomi made some changes from 14.0.3 to 14.0.4 on cmi, possibly related to modems, which may not be compatible with xiaomi.eu. Another theory is that my carrier normally doesn't allow 5G at all. My cmi on xiaomi.eu, up until V14.0.4.0.TJACNXM_v14-13, was my first phone that successfully connected to 5G. It's possible that some patch or similar modification in V14.0.4.0.TJACNXM_v14-13 by xiaomi.eu was either removed or not applied correctly during the development/signing process.
Best regards,
Roka
After the upgrade, 5G no longer functions. I'm using a Swedish (Europe) carrier, specifically Telia/Fello. While 5G is still visible in all the menus/settings, attempting to manually search for networks only lists numerous carriers offering LTE, 3G, and GSM/EDGE-networks, with no 5G networks in sight. My phone is located in Sweden's largest city, where 5G coverage is typically excellent (and I've confirmed this with another device on another carrier/sim).
To troubleshoot, I performed a complete backup using TWRP, downgraded to V14.0.3.0.TJACNXM_v14-13, and wiped all data. With this previous version, 5G coverage was excellent once again, and a manual network search revealed many carriers offering 5G networks. However, upon upgrading this clean install to V14.0.4.0.TJACNXM_v14-13, the same issue reappeared.
(Fortunately, I was able to restore my settings and app data successfully after this troubleshooting.)
My best guess is that Xiaomi made some changes from 14.0.3 to 14.0.4 on cmi, possibly related to modems, which may not be compatible with xiaomi.eu. Another theory is that my carrier normally doesn't allow 5G at all. My cmi on xiaomi.eu, up until V14.0.4.0.TJACNXM_v14-13, was my first phone that successfully connected to 5G. It's possible that some patch or similar modification in V14.0.4.0.TJACNXM_v14-13 by xiaomi.eu was either removed or not applied correctly during the development/signing process.
Best regards,
Roka