When you buy a phone from O2, it's already preset. After inserting your SIM card into your phone, you'll get an SMS with the latest settings.
If you don't receive this SMS, text us with the keywords IVMNASTAV to the phone number 999555 and you should receive the SMS soon after.
In some cases, you may be required to enter a security code, which is 1234 or 12345 depending on the type of phone.
For selected phones such as the iPhone, phones with the Android or Windows Mobile operating system, it is necessary to adjust the settings manually. Instructions on how to do so are available at Techzona.
