Nokia 3310 4G User Guide11 Update the phone softwareCALCULATORLearn how to add, subtract, multiply, and divide with your phone’s calculator.Reset your phoneAccidents may happen and your phone may stop responding. You can restore the originalfactory settings, but be careful, since this reset removes all data you have saved in the phone’smemory and all of your personalisation.If you are disposing your phone, note that you are responsible of removing all private content.You may need the have the security code to restore the original settings. To reset your phoneto its original settings and to remove all your data, on the home screen, type in *#7370#.1. Select Menu > � > System > About > Restore factory settings .2. There is no more confirmation after you select OK , but the phone is reset and all data isremoved.3. The phone reboots.© 2019 HMD Global Oy. All rights reserved. 27