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- What does dialing *#21# do on iPhone? - Apple Community
It's actually *#21# All that code does is tells you if call forwarding is on or off There's a whole bunch of things you can do with these secret "codes " they are harmless as your phone isn't being "tapped " They are simply giving you the status of things on your device
- com. apple. buildinfo. preflight. error error 21 - Apple Support Community
This thread has been closed by the system or the community team You may vote for any posts you find helpful, or search the Community for additional answers
- Endless iCloud login loop on Windows 11 - Apple Community
Find an older "Traditional Installer" version of the app, not the microsoft store one and install it (I installed version 7 21 0 23 of iCloud for Windows with and installer I found on TheAppleWiki) After installing, it will ask to restart your PC, do that
- DFU Revive and Restore Error - Apple Community
Failed to restore device in recovery mode, libusbrestore error:21 [com apple MobileDevice MobileRestore – 0x15 (21)] And Irav88's message helped me! I used my Thunderbolt Cable which came with my mac, but it turns out this does only transfer power and not data!
- setting interrogation Failed - Apple Community
"#21#" is a GSM (Global System for Mobile Communications) code that allows you to check the call forwarding settings on your phone When you enter "#21#" and press the call button on your mobile phone, it will display the current call forwarding settings for all types of calls, including voice calls, data calls, and fax calls This code is
- Setting interrogation failed on iPhone - Apple Community
If you ever got your phone taken by the police they can tap your phone then when you do *#21# it will say on all calls instead of disabled that’s how you know if you know is tapped if it’s not tapped it will say disabled
- (ERROR 21) WHEN TRYING TO RE-INSTALL MONTEREY - Apple Support Community
Ladies and Gentlemen this is the solution please follow the steps below : Start Mac in recovery mode (CMDR +R)
- iPhone Call Forwarding: Setting Interroga… - Apple Community
In the Phone application, go to the phone keypad and enter *#21# and tap "Call" This will bring up the call forwarding information for your phone The first four lines should read: Setting Interrogation Succeeded Voice Call Forwarding On All Calls Disabled
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