ZTE Maven Unlock
Hi! I've bought Two (2) ZTE Maven from Amazon page, The cellphones arrives to me today, When i try to unlock on att.com/deviceunlock the pages says "The IMEI you entered does not appear to be an AT&T wireless phone or tablet. Please re-enter the correct 15-digit IMEI number for your AT&T wireless phone or tablet. You can obtain the IMEI number from the wireless phone by dialing *#06#." I tried with the IMEI on the box, with *#06# option, And the result is the same.
Is the same error than the old one "errorCode.ULP2003"? How i can do to unlock them?