Ordinary cell phone service works so that the unique serial number in your phone (its ESN) is used by the cell phone service provider to identify who you are. The wireless service 'knows' that a particular phone's serial number is your phone and knows to send phone calls to that phone when someone dials your phone number. A GSM phone is not directly linked to you. Instead, it has a removable account card, called a SIM (subscriber information module) and this SIM has a unique serial number on it.

The SIM (Subscriber Identity Module) card (SIM Chip) is the brain of your handset. The SIM card is approximately the size of a credit card. The SIM chip is removed from the card holder and inserted into the back of the handset. It’s about the size of a postage stamp, with embedded circuitry on one side. When inserted into a GSM handset, the SIM when activated by Cable & Wireless facilitates mobile service on a particular GSM network. See similar questions...

Ok, when is the iphone actually going to come out (real date not just June)? Also where there be AIM or ichat on this device, or is it just e-mail. Because for a kid, like me, they really want AIM or ichat? Thanks! Now that we’re on the brink of June (release month), there must be some major updates to the iPhone, necessitating an updated FAQ. See similar questions...

If you have SIM contacts you can transfer them over to the phone by using the SIM Manager or if your phone does not have one, the regular Contacts program itself will have an option to copy from SIM to phone. If you have a lot of contacts on your SIM card, you can easily automatically import all SIM contacts by using a small utility like SIMImp. See similar questions...

You should immediately call 1626 to suspend both lines to terminate any potential unauthorized use of the lines. Upon doing so, you can go to any Hello Customer Service Centre to get a 2-in-1 SIM replacement card (at no charge). See similar questions...

Make sure that the mobile is turned off before inserting the SIM card, Remove the battery and check for the SIM card slot, this slot may be at the top, middle and the bottom of the mobile. Insert the SIM card in a position as drawn near the slot. See similar questions...

You should immediately report it to ACN by contacting our Customer Service department. You can call the same number outside of our opening hours to report this via our IVR system. Your subscription will then be blocked to prevent unauthorised use. See similar questions...

Yes, all of our SIM cards are pre-activated and ready to go! No need to program or setup the SIM card. See similar questions...