An ICCID (Integrated Circuit Card Identifier) is a unique 19 or 20-digit serial number found on your SIM card that acts as its "fingerprint". When people search for an "ICCID unlock tool," they are usually trying to bypass carrier restrictions on iPhones to use a different mobile provider. What is ICCID Unlocking?
Method: You use a small interposer chip (like an R-SIM, GPP, or MKSD) that sits between your SIM card and the tray. unlock sim iccid unlock tool
Final Warning: Always back up your data. Always verify the ICCID is current (check online forums like Reddit r/setupapp). And never pay for a "secret" ICCID number—all working numbers are eventually posted for free. An ICCID (Integrated Circuit Card Identifier) is a
No Technical Skills Needed: You don’t need to "jailbreak" or modify the phone’s software deeply. Method: You use a small interposer chip (like
That said, millions of older iPhones (iPhone 4 through iPhone X) still circulate in developing countries. For those devices, the ICCID method remains the cheapest, fastest way to convert a carrier-locked brick into a universal GSM phone.
| ICCID Number | Carrier / Region | Status (2025) |
| :--- | :--- | :--- |
| 89014103270421600538 | AT&T US Test SIM | Likely Revoked |
| 89390030111041069021 | China Mobile Test | Revoked since iOS 13.5 |
| 89442010000000000000 | Japan SoftBank Eng | Patched |
| 89014104279606044018 | T-Mobile US Test | Intermittent |