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For a start, because USSD is provider specific and unless you are the provider you need to initiate it with a special USSD code from the phone which you need to
by the_mitsuhiko 13y ago
For a start, because USSD is provider specific and unless you are the provider you need to initiate it with a special USSD code from the phone which you need to register in every network you want to operate in.
- kolev 13y agoNexmo offers it (although it's in Beta like pretty much every meaningful service): https://www.nexmo.com/tour/USSD.html https://www.nexmo.com/tour/USSD.html