08-22-2011 1:18 PM
I own an unlocked Inspire 4G that I acquired with Expansys to brought back to Mexico with a local carrier (Telcel). My phone was working very good until applied the latest ROM update (gingerbread). Every time I try to use the tethering or Wi-Fi HotSpot I get a message saying that I need to call AT&T to activate those functions. I don't have an AT&T account. I have an unlimited data plan with my carrier. I asked support to HTC and they referred me to you to help me unlock the phone or downgrade the ROM version to the one released on 04.29.2011 that has no problem.
08-22-2011 5:22 PM
I'm no expert but sounds to me that your mexican wireless service must have a deal with at&t when you are away from Mexico and you have to have a tethering plan with at&t. However, that really shouldn't make a difference. Other than bit of lack of wisdom, I have little to offer. You could also try Android Central ( http://forums.androidcentral.com/ ) or phandroid ( http://androidforums.com/ ). They know a lot about unlocking phones. I'm at&t and have my phone insured so I find it beneficial to know nothing about unlocking phones.
08-23-2011 1:27 AM
08-23-2011 8:45 AM - edited 08-23-2011 8:47 AM
I'm no expert but sounds to me that your mexican wireless service must have a deal with at&t when you are away from Mexico and you have to have a tethering plan with at&t.
That is not what is happening. The Inspire's ROM is rigged to only allow tethering (and WiFi hotspot is also a form of tethering) if you have an AT&T tethering plan. Tethering traffic is sent to a different APN than other data traffic. Since you don't have access to AT&T's APN, the error message results.
Try getting PDANet or Easy Tether from the market, and see if you can use those to get tethering up and running (only while using an unlocked Inspire on a foreign network, of course).
The other option (although a bit more work) is to root and flash the stock Desire HD ROM, or a custom ROM, to ditch AT&T's limitations and bloatware. But read up on the process, and know the risks before you start.