My service is through AT&T (formerly Cingular). About 2 and a half years ago, my phone was going out, so I bought a new one. The sim card didn't come with it, I would have had to buy it separately, but I just transferred it from the old phone. At the time I obtained the old phone, it was standard to get the sim card included, but not anymore. About a month later, I laid my new phone on a shelf at a Sam's and walked off and left it. Didn't realize til the next morning, and of course it has never been seen again. I had to go buy another new phone, and I had to buy a sim card separately, it didn't come with the phone. I've had that phone all this time. At some point, I realized I could save my phone numbers to the sim card, and started doing that, but still had a lot of numbers just saved to the phone. This Friday, my phone started messing up. I have insurance, so called phone company, we couldn't fix phone, so they sent me a new one, minus sim card. I tried to mass save my #'s from phone to sim, and it wiped out about half the numbers I had. Fun for me. I got my new phone, and had to program it to save numbers to the sim card instead of the phone, it was default to phone. I am not tech challenged, but this turned out to be a little harder than I expected it to be. Even though both phones are Motorolas and have a lot in common, the setups are different.
Also, my husband's phone was messing up a few months back, and he had to go out of town for a couple of weeks. He needed the phone for business purposes, so I made my son trade phones with him. They swapped sim cards so they would still have their own number and info, and we had to do the same thing, go through and save all numbers in address book from phone to sim.
Lanie