BlackBerry

if the carrier u have chosen cant provide u the service books...
II. Register Your Blackberry on the Network

1. On your phone goto Options > Advanced Options > Host Routing Table

2. Click Menu then Register Now.
III. Input APN Settings

1. Goto Options > Advanced Options > TCP/IP

for carrier specific settings:
T-Mobile -
Internet Settings MMS Settings
APN: epc.tmobile.com
Proxy: [Leave Blank]
Port: [Leave Blank]
Username: [Leave Blank]
Password: [Leave Blank]
Server: [Leave Blank] MMSC: http://216.155.174.84/servlets/mms
MMS Proxy: [Leave Blank]
MMS Port: [Leave Blank]
MMS Protocol: WAP 2.0
MCC: 310
MNC: 260
AT&T -
Internet Settings MMS Settings
APN: wap.cingular
Proxy: [Leave Blank]
Port: [Leave Blank]
Userna...
(continues)