crDroid is essentially LineageOS with extra performance tweaks and Lineage’s privacy guard. It is underrated but very stable for the BG2-U01. Let’s assume you have unlocked your bootloader and installed TWRP.
LineageOS is the gold standard for custom ROMs. The 14.1 build for BG2-U01 is incredibly stable. It replaces EMUI with a near-stock Pixel-like interface. All hardware works: Wi-Fi, Bluetooth, GPS, and RIL (Calls/SMS). You get the benefit of modern notification controls and multi-window mode, which stock Lollipop lacked. Stability Rating: 7/10 Best for: Features lovers. 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. LineageOS is the gold standard for custom ROMs