5Copyright © 2010 Nokia. All rights reserved.■ About your deviceThe wireless device described in thisguide is approved for use on the(E)GSM 850, 900, 1800, and 1900, andUMTS 850/1900/2100 HSPA networks.Contact your service provider for moreinformation about networks.During extended operation, such as ahigh speed data connection, the devicemay feel warm. In most cases, thiscondition is normal. If you suspect thedevice is not working properly, take itto the nearest authorised servicefacility.When connecting to any other device,read its user guide for detailed safetyinstructions. Do not connectincompatible products.■ Network servicesTo use the device you must haveservice from a wireless service provider.Some features are not available on allnetworks; other features may requirethat you make specific arrangementswith your service provider to use them.Network services involve transmissionof data. Check with your serviceprovider for details about fees in yourhome network and when roaming inother networks. Your service providercan explain what charges will apply.Some networks may have limitationsthat affect how you can use somefeatures of this device requiringnetwork support.