You can setting this brand mobile E65.E70.N80.N81.N93.N93i.N95

Fist you can choess this brand any mobile after that your need any 3G unlimited GSM SIMCARD.

After that you can format your mobile Ex...*#7370#
After you see you mobile TIME & DATE ok ?

Next Go to Manu>Tools>Settings>
Connection>SIP Setting > 
Opton then new SIP Profile>
Profile name: BD-PHONE.NET>
Service frofile: IETF>
Default access point: Mobile internet (pre..) or Al-Jawalnet>
Public User Name:PIN@BD-PHONE.NET>
Use Compression: No>
Regestration: When Needed>
Use Security: No>
Registrar server then ok>
Registar Server Add: BD-PHONE.NET>
Realm: BD-PHONE>
User name : PIN>
Password: Password>
Transport type: UDP>
Port: 5060>
Then 3 time back>
Internet tel.Settings>
Option then new profile>
Profile Name:BD-PHONE>
Go to Manu>
Connect>
Internet tel>
Type number option then internet call>
Dial 121 Options>Call>Internet Call>