Not all ROMs are created equal. The SM-T211 (codename: lt02 or lt02wifi with 3G) requires specific builds. Here are the three most stable options:
Android Legacy Hub Difficulty Level: Advanced Time Required: 2–3 Hours custom rom for samsung galaxy tab 3 sm-t211
Your battery is likely old (10+ years). However, flash a "Trim" script via TWRP or calibrate the battery by draining it to 0% and charging to 100% while powered off. Not all ROMs are created equal
Once you have the ROM zip file on your SD card: However, flash a "Trim" script via TWRP or
| Issue | Workaround | |-------|-------------| | RIL (mobile data/SMS) breaks sometimes | Toggle Airplane mode or reboot | | YouTube lag | Use NewPipe or YouTube ReVanced with software decoding | | Bluetooth audio stutter | Use wired headphones | | Battery drain | Disable animations in Developer Options |