Firmware - Vivo Y15s Mt6580

(found under the battery or original box) before flashing.

The Vivo Y15s is a reliable entry-level smartphone, but like any device running on a MediaTek processor, it is prone to software issues. Boot loops, IMEI null errors, FRP locks, and the dreaded “white screen of death” are common problems that point to one solution: vivo y15s mt6580 firmware

Flashing the original firmware solves 99% of deep-level software problems, including: (found under the battery or original box) before flashing

What is the current (found in Settings > About Phone)? IMEI null errors