The app works on any iPhone model with a standard SIM card. Apple’s SIM card is included. Truphone’s eSim for iPhone has two SIMs – one for a regular phone and another for a mobile data plan. The Truphone application also lets you make calls with two different SIM cards. Both SIM cards are compatible with iPhones and iPod Touch devices. It also lets you view contacts from other networks
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which can be convenient for travelers.