For T-Mobile networks, set the parameters as follows:
Context ID:
1
Context:
VoiceStream
(Note that this is T-Mobile)
PDP Type:
IP
APN:
internet2.voicestream.com
(This is important - default is
internet3.voicestream.com. Only use internet3.voicestream.com if the SIM is
provisioned for VPN access. If you don’t know what that means, use internet2)
Recommend that all other parameters be set to zero
(0).
NOTE: For
AT&T customers
use the following:
Context ID – Choose
2
Context – Enter
ATT
PDP Type –
IP
APN –
proxy
(all lower case characters)
PDP Address –
010.250.250.250
Set up other parameters same as T-Mobile.
Change Current Active Context to be
2