-Unstructured Supplementary Service Data.
- GSM technology.
-Used for communication between a mobile phone and an application in the network.
-Eg. Its USSD communication happening,when you recharge your mobile credit via recharge cards,or communicate with the service provider through menu-driven application provided by them. You must surely have noticed the message ''USSD code running'' while recharging your phone.
-This is similar to SMS.
-But unlike SMS,USSD is realtime/live.
-You can save SMSs in your device for any period of time,but USSD communications can't be saved.
Source
- GSM technology.
-Used for communication between a mobile phone and an application in the network.
-Eg. Its USSD communication happening,when you recharge your mobile credit via recharge cards,or communicate with the service provider through menu-driven application provided by them. You must surely have noticed the message ''USSD code running'' while recharging your phone.
-This is similar to SMS.
-But unlike SMS,USSD is realtime/live.
-You can save SMSs in your device for any period of time,but USSD communications can't be saved.
Source
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