Apple Secret Codes & USSD Dial Codes (2026)
iPhone field-test & carrier codes
Apple takes a much stricter approach to hidden diagnostics than Android manufacturers, so iPhone secret codes are mostly standard GSM MMI strings rather than proprietary service menus. What survives is still genuinely useful: Field Test Mode exposes the raw cellular measurements iOS hides behind signal bars, and the call-forwarding, call-waiting and caller-ID interrogation codes report exactly how your carrier has configured the line.
Field Test Mode is the headline tool. It shows the serving cell, the frequency band in use and the RSRP value in dBm, which is the only honest way to compare reception between two locations or two SIM cards. Anything above roughly -90 dBm is strong; below -110 dBm you are on the edge of usable service.
The remaining iPhone codes are interrogation strings. They ask the network a question and print the answer, so none of them can damage the device or alter your data. There is no iPhone equivalent of the Android hardware test grid, and no dial code can jailbreak, unlock or bypass Activation Lock, whatever other sites claim.
Checking a used Apple handset? Run its IMEI through our free IMEI checker — dial *#06# to reveal the 15-digit number.
Full Apple secret code list (16 codes)
Every code below is documented from public device and service documentation. None of these codes erase user data, but always read the risk column first.
| Code | What it does | Category | Risk level |
|---|---|---|---|
| Voicemail Forwarding Status. Shows the number and delay used for forwarding unanswered calls to voicemail. | call | Safe — read only | |
| No-Service Forwarding. Shows the number calls are forwarded to when the iPhone is unreachable. | call | Safe — read only | |
| Call Barring Status. Shows whether call barring is active on the iPhone line. | network | Safe — read only | |
| Show IMEI. Displays the iPhone's IMEI number. | info | Safe — read only | |
| SMS Center Number. Shows the message centre number used to send SMS. | info | Safe — read only | |
| Forwarding When Busy. Shows where calls go when the line is busy. | network | Safe — read only | |
| Remaining Minutes. Checks remaining plan minutes (works on some US carriers only).Community-reported · unverified | network | Safe — read only | |
| Caller ID (incoming). Shows whether incoming caller ID is enabled. | network | Safe — read only | |
| Caller ID (outgoing). Shows whether your number is presented on outgoing calls. | network | Safe — read only | |
| Prepaid Account Balance. Checks prepaid balance (carrier-dependent).Community-reported · unverified | network | Safe — read only | |
| Field Test Mode. Dial then press call to open the Field Test app showing detailed cellular signal and cell data. | diagnostics | Safe — read only | |
| Call Forwarding Status. Shows all-call forwarding settings on the iPhone. | network | Safe — read only | |
| Cancel All Forwarding. Turns off every type of call forwarding on the line. | network | Caution — changes settings | |
| Call Waiting Status. Shows whether call waiting is currently enabled. | network | Safe — read only | |
| Enable Call Waiting. Turns on call waiting so a second caller can reach you mid-call. | network | Caution — changes settings | |
| Disable Call Waiting. Turns off call waiting. | network | Caution — changes settings |
How to use Apple codes
- Open the iPhone Phone app and go to the keypad, exactly as if you were dialling a number.
- Type the code precisely as shown, including the leading
*and the trailing#. Autocorrect and paste can drop characters, so type it out. - Most sequences fire the moment the final character is entered — you usually do not press call.
- If the screen does not change, press the call button once; a few USSD strings need it.
- Back up photos, messages and app data before running anything marked destructive, then confirm you are on the right device.
- Nothing at all happening usually means the code is disabled on your firmware or blocked by your carrier — it is not a fault with your handset.
Apple secret codes — FAQ
Apakah semua ponsel Apple mendukung kode rahasia yang sama?
Tidak. Dukungan kode bergantung pada model, versi firmware, dan dalam banyak kasus, operator yang menyediakan ponsel tersebut. Model Apple lama sering kali menyediakan akses ke lebih banyak menu servis dibandingkan model terbaru, karena produsen secara bertahap membatasi akses ke alat rekayasa hanya melalui aplikasi diagnostik yang ditandatangani secara digital. Jika suatu kode tidak memberikan respons, hampir bisa dipastikan kode tersebut telah dihapus atau dinonaktifkan pada versi sistem Anda, bukan karena salah diketik.
Apakah aman menggunakan kode rahasia Apple?
Kode yang kami tandai sebagai "aman" hanya menampilkan informasi atau membuka menu pengujian yang hanya dapat dibaca, sehingga tidak dapat merusak ponsel Anda. Kode bertanda "hati-hati" mengubah pengaturan atau menjalankan prosedur perangkat keras yang perlu Anda pahami terlebih dahulu, sedangkan kode bertanda "destruktif" langsung menghapus data pengguna tanpa dialog konfirmasi. Selalu cadangkan data sebelum menjalankan apa pun dalam kategori destruktif.
Mengapa tidak terjadi apa-apa saat saya memasukkan kode?
Ada tiga alasan umum: kode tersebut tidak didukung oleh firmware Anda, operator jaringan Anda telah memblokir rangkaian kode USSD tersebut, atau aplikasi telepon mengharuskan Anda menekan tombol panggil untuk rangkaian kode itu. Coba kode tersebut dengan SIM lain atau dalam mode pesawat, dan pastikan setiap karakternya benar, termasuk tanda bintang di awal dan tanda pagar di akhir.
Apakah penggunaan kode-kode ini akan membatalkan garansi Apple saya?
Sekadar membaca informasi diagnostik tidak membatalkan garansi. Namun, mengubah pengaturan pita frekuensi radio, menjalankan operasi penulisan di menu teknis, atau melakukan format pabrik dapat membuat perangkat Anda berada dalam kondisi yang mungkin dianggap pusat servis sebagai akibat tindakan pengguna. Gunakan hanya kode yang bersifat baca-saja, kecuali Anda mengikuti panduan perbaikan resmi.
Apakah kode ini bisa membuka kunci jaringan pada ponsel Apple?
Tidak. Membuka kunci jaringan memerlukan kode pembuka kunci yang diterbitkan operator atau permintaan pembukaan kunci resmi melalui operator Anda. Situs mana pun yang menjanjikan kode panggilan universal gratis untuk membuka kunci berarti menyesatkan Anda. Kode yang tercantum di sini hanya menampilkan diagnostik, status jaringan, informasi perangkat tegar, dan prosedur pengaturan ulang pabrik.
Bagaimana cara menemukan IMEI pada perangkat Apple saya?
Tekan *#06# pada ponsel GSM atau LTE apa pun, termasuk semua model Apple, dan IMEI akan langsung muncul. Anda juga dapat memvalidasi nomor tersebut dengan pemeriksa IMEI kami, yang menjalankan perhitungan jumlah periksa Luhn yang digunakan GSMA untuk mendeteksi nomor IMEI yang salah ketik atau dibuat-buat.
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