дополню сию полезную информацию. разблокировка касается, по всей видимости, не только айфонов, но и вообще. Минут 10 назад попробовал разблокировать zte z990 от at&t. Ответ пришел через минуту

Полный текст

Unlock request number: 2024279655

Thank you for contacting AT&T about unlocking your mobile device.

Congratulations! Here are your unlock instructions:

Your unlock code is: 4511816986430198

Using a Non-AT&T SIM Card

1. Insert a non-AT&T SIM card.

2. Power on the device.

3. The device displays "Phone locked. Please insert a valid SIM card."

4. Select Unlock (left soft key).

5. The device displays "Please enter network unlock code (16 digits). Remaining: X."

6. Enter the 16-digit unlock code.

7. Select OK (left soft key).

8. Select OK to reset the device.

Using an AT&T SIM Card

1. Insert an AT&T SIM card.

2. Power on the device.

3. Enter *983*865625# in idle mode.

4. Select Unlock (left soft key).

5. The device displays "Please enter network unlock code (16 digits). Remaining: X."

6. Enter the 16-digit unlock code.

7. Select OK (left soft key).

8. Select OK to reset the device.

Note: You are allowed five attempts to unlock before your device permanently locks to the AT&T network.

Questions? Please call 800.331.0500, or dial 611 from your AT&T wireless phone.


Sincerely,
The AT&T Customer Care Team
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Так что пробуйте, панове.