SIM cards allow you to transfer information from one GSM phone to another.
GSM cell phones, which use the Global System for Mobile Communication standard, are characterized by their use of small chips (or SIM cards) to store data and information. GSM cell phones also use their SIM cards to exchange information with the networks themselves, including credentials to log in to a given carrier's voice mail server. If your cell phone becomes damaged in some way, you can retrieve lost voice mail messages easier than you might think.
Instructions
1. Remove the SIM card from your original phone. If your phone has a removable battery, the SIM card will be located in the body of the phone just underneath it. If you use the iPhone, you'll need to remove the SIM card from the top of the phone by inserting a sharp object into the hole next to it.
2. Insert the SIM card into another GSM device, keeping in mind that this device must be intended for use on the same network as your original phone (or, better, "unlocked" to work on any network). For example, if you remove your SIM card from a Blackberry you used with AT&T service but try to insert it into a T-Mobile Wing, it likely won't work. Power on the auxiliary mobile device and wait for it to pick up a signal from the network.
3. Retrieve your voice mail as normal by pressing a preset "voice mail" button or dialing your own phone number. You'll be able to access any voice mail messages that were available on your previous cell phone thanks to the SIM card, which will automatically provide your credentials to your network's voice mail server.
Tags: voice mail, card from, cell phone, cell phones, from phone