SIM stands for Subscriber Identity Module. A SIM card is a small "smartcard" that houses your mobile phone number, authenticiation key, and other information. The SIM card resides inside GSM phones, but it can be removed easily and swapped to another phone.
You can store some Speed Dial numbers and SMS messages directly on your SIM so that you are never without them, even if you're using somebody else's phone. When you use your SIM in another phone, you are accessing the network through your own identity and authentication, so all activity will be credited to your account. VisorPhone and GSM versions of Treo use SIM cards.
Treo 700p note:
(Alltel, Bell, Cellular South, Sprint, Telus, Verizon, and other CDMA carriers)
Your smartphone does not use a SIM card. These instructions do not apply to you. If you want to switch the account associated with your device, please contact your mobile service provider.
Treo 680
| See Knowledge Library article 41078 for an illustrated guide. |
 |
 |
Treo 650, 600
Cingular, Rogers, Unlocked GSM and other GSM carriers:
- Remove the SIM tray from the slot on the back of your Treo.
- With the metal contacts face-up, align the notch on the SIM card with the notch on the SIM slot and insert the SIM card. If it is inserted correctly, you will see the metal contacts after inserting the card.
- Re-insert the SIM tray into your Treo.
Alltel, Bell, Cellular South, Sprint, Telus, Verizon, and other CDMA carriers:
Your smartphone does not use a SIM card. These instructions do not apply to you. If you want to switch the account associated with your device, please contact your mobile service provider.
Treo 180, 180g, 270
Cingular, Rogers, Unlocked GSM and other GSM carriers:
- Remove the SIM door, which is on the back of your Treo.
- With the metal contacts face-up, align the notch on the SIM card with the notch on the SIM slot and insert the SIM card. If it is inserted correctly, you will see the metal contacts after inserting the card.
- Replace the SIM door, ensuring it clicks firmly into place.
VisorPhone
Cingular, Rogers, Unlocked GSM and other GSM carriers:
- Remove the battery pack, which is on the back of the VisorPhone module. You do not have to take the VisorPhone out of the Visor.
- With the metal contacts face-down, align the notch on the SIM card with the notch on the SIM slot and insert the SIM card. If it is inserted correctly, you will not be able to see the metal contacts after inserting the card, because they are facing away from you.
- Replace the battery pack, ensuring it clicks firmly into place.
To remove the SIM
Follow the steps above to access the SIM area, and remove the card from its slot.
You don't have to do any special preparations before you remove the SIM. You might want to turn off Wireless mode of your phone to avoid a beep and an alert message, but you will not harm the SIM or the phone unless you are writing to the SIM when you remove it.
