hi people! i changed the CPU and all problems fixed! and now phone working correctly! but now have a another problem.when i connect my phone to setool give this error:
Welcome to SEtool2 ( LITE edition ) v 1.11
supported DB2010/DB2012 CID49/50/51/52, DB2020 CID49/51/52
Loaded 51 flash descriptors

if you like LITE edition - please visit http://www.setool.net and buy FULL.

ChipID:9900,EMP protocol:0301
erom_readvar: error reading unit 1/851
error while reading security units
SECURITY UNITS CAN'T BE READ !
DAMAGED FIRMWARE/GDFS OR EMPTY PHONE
Can't load ID loader !
Elapsed:4 secs.
i check buttery , cable and its correct! i flash it with PhoneXS+ and flashed successfully but setool show this error again! what i can do?