iPhone Secret Codes: Check If Anyone's Inside Your Phone
The secret iPhone dial codes from the video, plus a bunch more. Open the Phone app, go to the keypad, type a code and hit call. These are GSM / MMI codes, so a few are carrier-dependent and may not work on every network. Run them on your own phone, to check your own settings.
Start here: is anyone getting your calls?
The 30-second self-check. Dial this and hit call. "Not forwarded" means you're clean. If you see a number you don't recognize, someone set up forwarding on your line.
*#21#Wipe all forwarding instantly
If the check above showed anything you didn't set up, this clears every forwarding rule at once.
##002#Device info
Pull the hardware identifiers and the hidden signal screen.
*#06# IMEI (hardware identifier)
*3001#12345#* Field Test Mode (real signal strength)
*#07# Regulatory / SAR infoCall forwarding (full set)
Check and manage exactly where your incoming calls go.
*#21# check unconditional forwarding
*21*number# turn on forwarding to a number
#21# turn off unconditional forwarding
*#61# check 'no answer' forwarding
*#62# check 'unreachable' forwarding
*#67# check 'busy' forwarding
##002# remove ALL forwardingCaller ID
Control whether your number shows when you call out.
*#31# is my caller ID hidden by default?
#31#number hide your number for one call
*31#number show your number for one callCall waiting & barring
Barring codes need your carrier's barring password (often 0000 or 3309).
*#43# check call-waiting status
*43# enable call waiting
#43# disable call waitingService numbers
The behind-the-scenes numbers your phone uses.
*#5005*7672# SMS center number
*#5005*86# voicemail number
*611 call carrier supportOne note
If a code does nothing, your carrier just doesn't support that MMI string. Totally normal. Use these to audit your own device, not anyone else's.
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Frequently asked questions
Dial codes that expose call-forwarding, caller ID and hidden redirects in seconds, then let you wipe anything you didn't set up.
Yes, they are built-in carrier codes. The guide says exactly what each one does first.
The guide gives the code to clear it. For a deeper check, here's the 60-second settings sweep.