- Capacity increases.
 - Reduced RF transmission power and longer battery life.
 - International roaming capability.
 - Better security against fraud (through terminal validation and user authentication).
 - Encryption capability for information security and privacy.
 - Compatibility with ISDN,leading to wider range of services.
 
1. Mobile telephony.
   2. GSM-R.
   3. Telemetry System:
- Fleet management.
- Automatic meter reading.
- Toll Collection.
- Remote control and fault reporting of DG sets.
   4. Value Added Services.