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How to make a cell phone prepaid
In order to make your current gsm cell phone prepaid, it must be out of contract.
If it is not out of contract, reach out to your current provider and ask to terminate your existing contract. There is usually an early termination fee associated with cancelling your existing service.
Choose a prepaid service with a " bring your own phone " (byop) program, sometimes also referred to as a " bring your own device " (byod) program. Some popular service providers that offer this are net10, straight talk and simple mobile.