If you are using the Huawei BG2-U01 as a primary phone in 2025, you shouldn't be. The hardware is too old for modern Uber or banking apps. However, as a —a music player, a GPS tracker, a kid's first phone, or a smart home controller—a custom ROM is a miracle worker.
If you want speed, go backwards. SlimRom based on Marshmallow is the lightest possible OS for the BG2-U01. It uses less than 400MB of RAM at idle. If you only need WhatsApp, YouTube Vanced (old version), and calls, this is faster than any Nougat ROM. Stability Rating: 8/10 Best for: LineageOS fans who want flavor. huawei bg2u01 custom rom
SIM card not detected / No Service. Fix: You need to flash the "Modem Fix" zip file specific to BG2-U01. Some custom ROMs break RIL (Radio Interface Layer). Search for "BG2-U01 modem fix" on XDA. If you are using the Huawei BG2-U01 as