Nokia Lumia 521 - Network services and costs

You can only use your RM-917 device on the WCDMA 850, 1700 (AWS), 1900 and GSM/EDGE 850, 900, 1800, 1900 MHz networks. You need a subscription with a service provider.

Using some features and downloading content require a network connection and may result in data costs. You may also need to subscribe to some features.