Nokia purchased the Navteq cell phone company in 2008. If you have a Navteq 5800 phone and want to switch carriers, your old service provider must give you an unlock code over the phone. If a company agent refuses to give you the code, you can buy one online.
Instructions
1. Type "*#06#" into your Nokia 5800 and press "Send." If this doesn't provide you with your IMEI number, pull off the back cover and battery of your phone and find the 15-digit number underneath.
2. Call your carrier's customer service department and politely ask for an unlock code. Give the representative your phone's IMEI number. Sometimes the agent is authorized to provide the unlock code. Other times, you must buy the code from one of several pay sites (see Resources).
3. Follow the steps provided by your old service carrier or online unlock service. Typically, you remove your old SIM card from the slot next to the battery, turn on the phone, then enter the unlock code when prompted. The phone displays a message showing whether the unlock code worked. If so, turn off the phone, install your new SIM card, replace the battery and back cover, then power back on to use your new service.
Tags: unlock code, your service, back cover, IMEI number, Nokia 5800, phone company, turn phone