Prepaid cell phones are phones which can be purchased from most wireless providers. These particular phones will allow you to purchase an allotted number of minutes which can be used over an extensive period of time. In addition, the minutes will not expire at the end of the month and you can purchase more when needed. However, you may find it necessary to attempt to use a SIM card in the prepaid phone. Doing this will not take away minutes from the prepaid phone, but from the SIM card's account.
The SIM Card
A SIM card is a small memory device (similar to memory cards used in digital cameras, only smaller) which stores the pertinent information of your account. If you have a phone with a SIM card in it, the card will have the phone number and user information saved on the card. This allows you to purchase a new phone and insert the SIM card which will activate most phones to your account.
Purchase Phones from Same Company as the SIM Card
In order to make sure the SIM card works on the prepaid cell phone, the phone and the SIM card will need to be from the same company (such as both from AT&T). Companies use different technology in their devices, and using a foreign company's SIM card may not work in the prepaid phone.
Check if the PrePaid Phone Has a SIM card
Some prepaid cell phones do not use a SIM card at all. In this instance the phone will most likely not have a slot for the SIM card. If the prepaid cell phone doesn't have a SIM card slot you will not be able to use a SIM card with the phone.
Remove the SIM Card from the Current Phone
Remove the SIM card from the phone it is currently being used in. It can typically be found close to the battery of the phone (although some makes and models are different). Remove the clip which keeps the battery in place and safe from debris. Now take the battery out. You will most likely see a small slot with the SIM card inside. Pull the SIM card out, and place the battery and clip back into place. While the SIM card is out you will not be able to use the phone.
Place SIM Card into PrePaid Phone
As long as the prepaid cell phone is of the same wireless provider as the SIM card, and as long as the phone has a SIM port, you will be able to use the SIM card on the phone. Open the clip on the back of the phone and remove the battery. Insert the SIM card into the port, and replace the battery and clip. Power the phone back on (it will have shut down when the battery was removed). The phone will scan and soon detect the new SIM card. When calls are placed they will now be through the phone number of the SIM card and the minutes will not be removed from the prepaid phone's account.
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