What does dialing *#21# do on iPhone? - Apple Community
Aug 17, 2020 · What does dialing *#21# do on iPhone? Hello apple community, reccently I stumbled upon a tiktok trend that is about this number. You write it as if you would call a new number. Typing …
What is Someone titan *#21# and what does… - Apple Community
Mar 14, 2021 · Dialing ##21# cancels call forwarding on your device (or again, just turn it off in settings). What confused me was the what is “someone titan *#21#” as that made no sense to me when I first …
Calling *#21# - Apple Community
Jul 23, 2020 · iPhone 7, iOS 13 Posted on Jul 23, 2020 2:28 PM
Interpreting *#21# results for a compromi… - Apple Community
Sep 6, 2025 · Interpreting *#21# results for a compromised iPhone Hello. Recently I had identity theft, and my iPhone was compromised. I got a new iPhone and did the *#21# and this came up. Should I …
[SOLUTION] Failed to restore device in re… - Apple Community
Nov 22, 2024 · [SOLUTION] Failed to restore device in recovery mode, libusbrestore error:21 [com.apple.MobileDevice.MobileRestore – 0x15 (21)]
DFU Restore error 21 during macOS update - Apple Community
Aug 11, 2025 · When I was updating macOS, it went to DFU mode. And then, while restoring, I get error 21. Please, tell me what is the actual issue? [Re-Titled by Moderator] Original ...
Can I increase the RAM in my 21.5" iMac f… - Apple Community
Jul 28, 2022 · A Fusion drive-equipped iMac 21.5 should not have the speed issues that the straight mechanical drives cause in that iMac unless something is wrong with the Fusion drive.
How can I fix restore error 21 on my MacB… - Apple Community
Aug 1, 2025 · How can I fix restore error 21 on my MacBook Pro M2 using another Mac?
com.apple.buildinfo.preflight.error error… - Apple Community
Dec 8, 2023 · warrenfromcarlton north Author Level 1 26 points com.apple.buildinfo.preflight.error error 21
com.apple.buildinfo.preflight.error 21 on… - Apple Community
Jan 2, 2025 · com.apple.buildinfo.preflight.error 21 on macOS Monterey installation For anyone out there trying to reinstall Monterey OS and getting this error, as I was, try first erasing the hard drive …