Will my phone reset if I take out the SIM card?

Smartphones usually have at least two stores of memory: a SIM card, and the phone’s internal memory. Removing the SIM card stops the phone from communicating with the network, but doesn’t erase the email and contact lists already on the phone.

What happens when I put someone else’s SIM card in my Iphone?

So long as its the same carrier as yours (assuming you are in a locked phone country) and the SIM is advanced enough, yes, it should work. Just don’t use data unless they have a data plan.

Can someone else use my SIM card?

Your SIM is openly available for anyone to take. You need to guard your phone. You phone might be locked, so it is simpler to take the SIM, put it into a different phone and use it. For example to send an SMS or call someone in your name. That is the reason the SIMS can also have SIM PINs (a password).

Can a SIM card be used to retrieve contact information?

In some circumstances, removing the SIM and placing it in to another device could be used to gain access to those names and numbers. Most people and most phones these days store contact information in places other than the SIM card, however. ( Usually on the phone itself. )

Can my phone be tracked if I remove the SIM card?

Not being tracked : If your phone was being moved and the person moving it wanted to leave no trace of its presence in any location, removing the SIM would prevent it being tracked in two ways. First, phones consistently ‘ping’ (connect for a brief period) the network.

What happens when you put your sim card back in?

When you put yours back in, the same process as above may happen – but probably only if the carrier for both SIMs is the same. If it is, then the carrier sytems will be able to tell that the SIM has been changed again for that device, and re-send the original settings to that device.