Can I use a Meteor SIM in my phone?
You will need to request an ‘unlocking code’ from your previous provider. This code removes a restriction from your phone which would only have allowed it to operate on your previous network.
To retrieve this information, your network provider will ask you for your ‘IMEI’ code. This fifteen digit code can be retrieved by dialling *#06# into your phone.
Once you have entered this code you can use any network SIM in that phone. The only exception is iPhones. The operator SIM used to unlock your iPhone is then locked to the handset. For this reason it is extremely important to use the SIM from your new operator when unlocking an Apple product.