It is possible to use a SIM card on different wireless phones.
A SIM card is a small data card inserted into GSM-based cell phones (AT&T and T-Mobile use this service). The SIM card houses the individual's contact information and allows you to use the contact data on different cell phones. This not only allows you to easily move between cell phones, but other GSM providers as well. Doing so gives you access to a wireless network almost wherever you travel.
Instructions
1. Power down the current cell phone.
2. Remove the battery cover and the battery, then slide out the SIM card. This is the typical location for a SIM card, although it may vary, depending on your wireless device. If you are not sure, consult your phone's user manual.
3. Turn off the second cell phone, then open the battery compartment and remove the current SIM card.
4. Slide your SIM card into the phone and power the device on. Momentarily the phone detects the cell phone information and displays your current phone number. All phone calls and text messages made are deducted from your current cell phone monthly statement.
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