Updating or restoring the device via iTunes/Finder will instantly relock the device. Security and Malware Risks
SIM cards will show "No Service" or "Searching". Calls, SMS text messages, and cellular data will not work. iphone 5s ios 12.5.7 icloud bypass
Given this robust design, official solutions are the only "true" unlocks. The only guaranteed way to remove the lock is to have the original owner sign into iCloud.com, go to "Find My iPhone," select the device, and click "Remove from Account". In extremely rare cases involving proof-of-purchase, Apple support can sometimes assist, but the success rate for this is very low. Updating or restoring the device via iTunes/Finder will