Forgive my ignorance but what is a GSM phone? My phone has a sim card but they said it only has photos and downloads. Ive backed my contacts up... it will automatically do it once a week.
Originally Posted by Hush of Texas
Your lack of knowledge is understandable. The phone companies do their best to keep the customers from knowing how they're being screwed, including telling outright lies.
Who's your carrier and type of phone? Some carriers use GSM, some don't.
SIM cards look like this: (Shape and gold contacts, not colors.)
You are probably talking about a micro SD card. Looks like the small thing on the right. SD cards are different from SIM cards. Some phones have both SIM and SD cards:
With a GSM card, the SIM card sort of is the phone. You can move the SIM card to another GSM phone, and your number will work on the new phone. If you take the SIM out, the phone doesn't work.
Some of the carriers lock down the phones so they only work with SIMs from the same carrier. If you buy an "unlocked" GSM phone, it will work with a SIM from any GSM carrier.
If you buy an AT&T phone, for instance, it may only work with AT&T. However, a prepaid AT&T phone will usually work with any AT&T SIM card.
iPhones only work with iPhone SIM cards. They use a different size of SIM card. Trust Apple to be incompatible.
Here's a list of GSM carriers.
http://en.wikipedia.org/wiki/List_of...vice_providers
AT&T and T-mobile are the big GSM carriers. Some of the off brand prepaid and smaller carriers use GSM.
If you have a GSM phone, it may store the contacts on the SIM card or not. On my phone, you can tell it whether to store the contacts in the SIM or on the phone.