AT&T Semi Premium Unlock - iPhone All Models Till 11 Pro Max (Slow Service /No Cancellation )
AT&T USA iPhone 11, 11 Pro & 11 Pro Max SIM Unlock by IMEI
Fix SIM Not Supported, SIM Not Valid and SIM Lock errors on your AT&T-locked iPhone 11 series. A remote, permanent factory unlock using only your IMEI — no jailbreak, no software, no SIM adapter.
Service Information
This service carrier-unlocks Apple iPhone 11 series devices that are locked to AT&T USA. When an AT&T-locked iPhone gets a SIM card from a different network, iOS blocks it and shows messages such as “SIM Not Supported”, “SIM Not Valid” or “The SIM card inserted in this iPhone does not appear to be supported.” These are not hardware faults. They mean that Apple’s activation server still records the phone as locked to AT&T.
We submit your IMEI for an official remote unlock. Once it is processed, Apple’s activation record changes to unlocked. Your iPhone then accepts SIM cards and eSIM profiles from other carriers, in the USA or anywhere else in the world. The unlock is permanent. It stays in place after iOS updates, restores and factory resets.
Supported AT&T iPhone 11 Series Models
| Model | US Model Number | Carrier Lock | Supported |
|---|---|---|---|
| iPhone 11 | A2111 | AT&T USA | Yes |
| iPhone 11 Pro | A2160 | AT&T USA | Yes |
| iPhone 11 Pro Max | A2161 | AT&T USA | Yes |
All storage sizes (64GB, 128GB, 256GB, 512GB) and all colours are supported. You can find the model number on your iPhone under Settings > General > About.
iPhone SIM Lock Errors This Unlock Fixes
Shown when you insert a non-AT&T SIM card. Common on iPhone 11 Pro Max and 11 Pro phones bought used or brought from the USA.
The phone detects the SIM but refuses to register it on the network because of the AT&T carrier policy.
Settings > General > About > Carrier Lock shows “SIM locked” instead of “No SIM restrictions”.
A new carrier’s eSIM won’t install and iOS asks you to contact your carrier to unlock the iPhone.
Service Features
- IMEI-based remote unlock — you only send the 15-digit IMEI. You don’t need to ship the phone or install any software.
- Permanent factory unlock — recorded on Apple’s activation server. It survives iOS updates and restores.
- No jailbreak, no R-SIM / Turbo SIM — your warranty status, iOS and data stay untouched.
- Physical SIM and eSIM — after the unlock, both SIM slots accept any carrier.
- Worldwide use — use local SIM cards in Bangladesh, India, Pakistan, the Middle East, Africa, Europe, Latin America and more.
- Automatic order tracking — you can follow the status in your ASUnlocker account and get notified when it is done.
- Reseller and API friendly — GSM shops can place bulk orders and connect through the DHRU Fusion API.
Requirements
- The device must be an Apple iPhone 11, iPhone 11 Pro or iPhone 11 Pro Max locked to AT&T USA.
- You must provide the correct 15-digit IMEI. Dial *#06# or open Settings > General > About. For dual-SIM devices, use IMEI 1.
- The IMEI must not be reported lost or stolen.
- The iPhone must not be iCloud locked (Activation Lock). This service removes the carrier lock only.
- Only order for a device you own or have permission to unlock.
How to Unlock Your AT&T iPhone 11 — 4 Steps
Dial *#06# or check Settings > General > About.
Add funds to your ASUnlocker account, choose this service and submit the IMEI.
We process the unlock. You get a notification when the order shows Success.
Connect to Wi-Fi and insert a new SIM. If needed, restart the phone or restore it in iTunes / Finder.
How to Check That Your iPhone 11 Is Unlocked
Go to Settings > General > About and look at Carrier Lock. If it says “No SIM restrictions”, the iPhone is unlocked. You can also insert a SIM from another carrier: if you get signal and there is no “SIM Not Supported” message, the unlock is working.
How to Add Funds Automatically (Video)
Frequently Asked Questions
Why does my AT&T iPhone 11 say “SIM Not Supported”?
Your iPhone is still carrier-locked to AT&T. Apple’s activation server only allows AT&T SIM cards on it, so any other SIM is rejected. An IMEI unlock removes this restriction.
Can I unlock an AT&T iPhone 11 Pro Max outside the USA?
Yes. The unlock is done remotely by IMEI, so the phone can be in any country. After the unlock it works with local GSM carriers worldwide.
Is the AT&T iPhone unlock permanent?
Yes. The unlock is stored on Apple’s activation server. Updating iOS, restoring or factory resetting the phone does not lock it again.
Will unlocking erase my data?
No. The carrier unlock itself doesn’t delete anything. In some cases you may need to restart or restore the iPhone to finish the unlock, so making a backup first is a good idea.
Can you unlock a blacklisted or iCloud-locked iPhone 11?
No. A device reported lost or stolen cannot be carrier-unlocked, and this service does not remove iCloud Activation Lock. Please check the IMEI status before you order.
Does this unlock work for eSIM?
Yes. After the carrier lock is removed, the iPhone 11 series accepts eSIM profiles from other carriers as well as physical nano-SIM cards.
Do you unlock other AT&T iPhone models?
Yes. ASUnlocker offers carrier unlock services for many iPhone models and carriers. Browse the iPhone unlock services or contact support for your exact model.
Unlock Other AT&T USA iPhone Models
Have a different AT&T-locked iPhone? Choose your series below. Each page lists the supported models, requirements and SIM/eSIM details for that generation.
AT&T iPhone 11 Series Unlock
iPhone 11, 11 Pro, 11 Pro Max
Need Help Before You Order?
Send your IMEI and we will check whether your AT&T iPhone 11 is supported.
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