Can't unlock At&t U2800A - unknown(read failed)

[Sparks555]

I can't unlock my At&t U2800A
===============================
DC - Unlocker 2 Client 1.00.0805
Detecting card :
selection :
manufacturer - Huawei modems
model - Auto detect (recommended)
Found modem : U2800A
IMEI : 356631049916606
Firmware : 2800ACBXB119
SIM Lock status : unknown(read failed)
sorry, this modem not supported !
=============================
Any ideas?

[Vincentas]

As I know U2800A is a phone. And always was.
Detect as huawei phones and should be able to connect.

[Sparks555]

As I know U2800A is a phone. And always was.
Detect as huawei phones and should be able to connect.

Thanks!!!

============================
DC - Unlocker 2 Client 1.00.0805
Detecting phone :
selection :
manufacturer - Huawei phones
model - Auto detect (recommended)
Found Phone : U2800A
Model : Huawei U2800
IMEI : 356631049916606
Firmware : U2800ACBXB119
============================
Unlocking, please wait ...
Preparing Boot Download mode ... OK
Waiting modem/phone to be ready ... OK
Phone successfully unlocked !
Credits left : 0
Please unplug and restart phone !
=============================