In my country they are few who have smart phones. I am looking for a way to back up user contacts from their mobile phones to a central Server.
User must be able to the retrieve said contacts if they lose their phone, from said central server/location. Can this be done using USSD code or sms?
user must be able to sign via phone number and select their pin code to register. then contacts are back up to central location.
user should manually sync with central server via USSD or sms. They would login using their phone number and pin code.
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