Before you download any firmware, you must confirm your exact model number. The TCL 30 XL 4G is often confused with the TCL 30 XE 5G or the TCL 30 V 5G.
Firmware acts as the bridge between your phone's hardware and its software. Installing the correct stock ROM for the TCL 30 XL 4G can resolve several critical issues: Firmware TCL 30 XL 4G