Nokia 7710 User Guide - Page 140

Troubleshooting except the standard applications that have been factory pre-installed in ROM memory! If you have made a back-up to a memory card, see "Managing memory cards" on page 127. When you format the internal memory, all the settings, documents, and other data in the internal memory that you have created or modified will be permanently destroyed. To format the internal memory, proceed as follows: 1 Disconnect the charger and remove the battery. 2 Wait for at least ten seconds and insert the battery to start the smartphone. 3 When you see the Nokia Welcome screen, immediately press and hold down the + + keys. The key should be pressed last. 4 Confirm that you want to format. Formatting starts. • I cannot make or receive calls. - Check to see if you have the Flight profile selected. When this profile is active, you cannot make or receive calls. - If you can only open Telephone to make emergency calls, your SIM card is not inserted. - Check the status of your call barrings and diverts. Open the Telephone application, press and select Tools > Settings > Call barring... or Call divert.... - The smartphone may be busy: data is being sent or received, or the smartphone is being used as a fax modem. Wait for data transmission to end, or end the data call. • The call quality is poor. - Your location may not allow better call quality. Move to a location where the radio signal reception is better. Reception is usually better above ground level, outdoors and while stationary. Sometimes even moving the smartphone slightly will improve reception. • I cannot divert or bar voice or data calls. - You may have not subscribed to the service in question, or it may not be supported by the network. - Make sure that the message centre number and the number to which you want to divert your calls are not missing or incorrect. • I cannot send or receive messages or e-mail. - You may have not subscribed to the service in question, or it may not be supported by the network. - Make sure you have configured the relevant settings. - The smartphone may be low on memory. - The number format you use may be invalid. - The smartphone may be busy: data is being sent or received, or the smartphone is being used as a fax modem. Wait for the data transmission to end, or drop the data call. • I cannot send multimedia messages. . - You may have not subscribed to the service in question, or it may not be supported by the network. - Make sure you have configured the relevant settings. - The smartphone may be low on memory. - If you get an error message when inserting a media clip to a message, check that the Multimedia mode 140 Copyright © 2005 Nokia. All rights reserved.