get activation failed iphone 8 16.7.12

[newwed]

GET ACTIVATION [CHANGE SERIAL NO KEY] Waiting for device... OK
Product Type : iPhone10,1
OS Verison : 16.7.12
Serial Number : C39GR0DMDTDM
IMEI : 356095090948597
MEID : 35609509094859
SIM Status : NotInserted
Activate Flags : ChangeSerial, Cellular
Activating with server... FAIL
Tips : Try changing serial method! CLICK VIDEO!
UNLOCKTOOL 2025.12.22.0
Elapsed time : 17 seconds