Check that you have the correct APN (modem’s phone number) entered into the software. A blue indicator light indicates that there is service available. The MobiLink software contains an “Accelerated Profile”, which has all the parameters installed for you to activate on the Cingular network. For T-Mobile, see below.
Profile for Cingular:
APN - isp.cingular
Username - isp@cingulargprs.com
Password – CINGULAR1
Profile for T-Mobile:
APN – wap.voicestream.com
Username – none
Password – none