does a sim card come with a phone number

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Many carriers do not assign a phone number to the SIM card until it is activated. When you buy a brand new SIM card, it might not have any number at all. When you place it in a phone to activate it, you will be assigned a number.

But not all mobile phones need SIM cards. Only GSM phones use these chips. But CDMA phones do not use SIM card, they store phone number and the rest of your information in the device itself. This means those CDMA phones cannot be used with a different mobile network unless it is an unlocked mobile phone.

Some SIM cards are mobile, which means if you put it in an upgraded phone you just purchased, the phone number and carrier plan details will now magically start working on that phone.

The mobile number and all the stored data in each SIM card cannot be copied or duplicated. Remember that SIM stands for Subscriber Identity Module, so once you insert it in your cell phone; it is your phone鈥檚 I.D.