Can I Swap SIM Cards Between Mobile Phones?
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Yes, in general, SIM cards can be exchanged among mobile phones from the same carrier. This subscriber identity module (SIM) is read by the device and contains data unique to the registered user, such as their identification number and data.
In addition, the SIM card has enough memory to store a limited amount of phone numbers, text messages and other information. This gives the user the flexibility to change devices while maintaining the current service agreement and without losing saved data. However, care should be taken when a user attempts to use a SIM card in a phone that originated in another country because the frequencies used by cellular networks abroad may vary.
