I cannot find my network provider in the dropdown list

Check you have selected the country to which the current network provider of your phone belongs.

Don't know your phone's network provider?

Use our Network Operator Check Service.

Look for a sticker or an external logo.

Turn the phone on to see if the network provider's logo appears during startup.

Try SIM cards from different network providers. The phone will only work with the SIM card from the original network provider.