# iPhone codes by category

URL: https://byshahid.com/blog/iphone-codes/
App: Secret Codes: IMEI & Carrier (https://apps.apple.com/us/app/secret-codes-imei-carrier/id6807154322)
Updated: 2026-11-04

> 317 checked codes and guides from the Secret Codes app, one page each. Choose a category.

- [Call forwarding codes](https://byshahid.com/blog/iphone-codes/call-forwarding/): Every code to set, check, pause and cancel call forwarding on an iPhone.
- [Caller ID codes](https://byshahid.com/blog/iphone-codes/caller-id/): Hide or show your number, check your caller ID status and control scam blocking.
- [Call barring and SIM PIN codes](https://byshahid.com/blog/iphone-codes/call-barring-and-sim/): The GSM codes for barring calls, changing your SIM PIN and unblocking with a PUK.
- [Verizon, AT&T and T-Mobile codes](https://byshahid.com/blog/iphone-codes/carrier-codes/): Balance, minutes, data and payment codes for the main US carriers.
- [More carrier and N11 codes](https://byshahid.com/blog/iphone-codes/more-carrier-codes/): Deeper carrier codes, N11 services such as 411 and 988, and international dialling.
- [Prepaid and MVNO codes](https://byshahid.com/blog/iphone-codes/prepaid-and-mvno/): Mint, Visible, Cricket, Metro, Boost, Google Fi, Straight Talk and other smaller carriers.
- [Network and signal](https://byshahid.com/blog/iphone-codes/network/): Call waiting, 5G and LTE, network selection, roaming and hotspot settings.
- [SIM and eSIM](https://byshahid.com/blog/iphone-codes/sim-and-esim/): Find your ICCID and EID, and add, move or remove an eSIM.
- [Voicemail](https://byshahid.com/blog/iphone-codes/voicemail/): Reach voicemail, change its number and check messages from another phone.
- [Security and scam reporting](https://byshahid.com/blog/iphone-codes/security-and-scams/): Report spam, lock your number against port-out fraud and protect a lost iPhone.
- [Fix iPhone phone problems](https://byshahid.com/blog/iphone-codes/fix-iphone-problems/): Step-by-step fixes for No Service, dropped calls, texts, voicemail, eSIM and more.
- [iPhone phone and message settings](https://byshahid.com/blog/iphone-codes/phone-settings/): Call recording, call screening, RCS, per-app data and accessibility, with the exact path.
- [iPhone calling features](https://byshahid.com/blog/iphone-codes/iphone-features/): Emergency SOS, RTT, conference calls, force restart and other built-in features.