3 solutions to fix iPhone unavailable try again in 15 minutes.
Why you’re greeted with the dreaded “iPhone Unavailable try again in 15 minutes” screen.
1. Use iTunes.
2. Use the Erase option.
3. Use the third-party software:
SD iPhone Passcode Unlocker.
https://www.softwaredive.com/sd-iphon...
Text Guide:
https://www.softwaredive.com/iphone-u...