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- Using *#21# is as simple as dialing a phone number. Here’s how: Open your phone’s dialer. Type in *#21#. Press the call or dial button. You’ll see a prompt displaying the status of your call forwarding settings.
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What is a '21' code on a phone?
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What does dialing '21' actually do?
Does dialing '21' on a phone reveal if a call has been tapped?
How do I find out if a call is a 'interrogation code'?
Can a secret code reroute your incoming calls & messages?
Dialling *#21# on your iPhone tells you whether you have call forwarding active on your mobile number. If you dial *#21# and find that your calls are forwarded or diverted, you can simply dial ##21# or ##002# to cancel the forwarding. ##62# erases any call diverts you may have on your telephone line.
- Mister Mobility
Jul 23, 2020 · How-to Geek described the *#21# feature as an “interrogation code” that allow users to view their call forwarding setting from the phone app.
- Fact Check Fellow
Mar 18, 2021 · To cancel and deregister forwards when out of reach, dial the ##21# code. This code works for GSM networks. For Verizon Wireless, see Number 6 below for all forwarding. There's also code **21* on Verizon One Talk and *21* on AT&T Collaborate lines.
- Justin Meyers
Dec 8, 2022 · When you dial *#21#, you are, in fact, activating a feature access code that quickly tells you the status of call forwarding for your phone. It's a quick way of seeing what, in the case of this...
May 6, 2017 · Call Forwarding: Type *#21# to view whether call forwarding is enabled or type ##002# to disable call forwarding. You can also view call forwarding status and enable it from Settings > Phone > Call Forwarding.
- Former Editor-In-Chief
Jul 16, 2020 · iPhone code: *3001#12345# This string of symbols and numbers performs the function of giving you a field test, showing cell signal and reception readings. Here are 17 iPhone hacks you never...
Aug 17, 2020 · 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.
