Basic Operations 38Update Your PhoneFrom time to time, updates may become available for your phone. You can download and apply updatesthrough the Settings > System Update menu.Software Update CautionsDuring update: The phone cannot be used until the software update is complete. It may take time toupdate your phone’s software.Signal during update: Update your phone where signal reception is good, and do not changelocation during the update process. Make sure the battery is adequately charged before beginning anupdate. A weak signal or low battery during an update may cause the update to fail. An update failuremay disable the phone.Other functions during update: Other phone functions cannot be used during a software update.Update Your Phone SoftwareYou can update your phone's software using the System Update option.Before Updating Your PhoneUpdating your phone may result in a loss of saved data depending on the condition of your phone(malfunctioning, damaged, water seepage, etc.). You must back up all critical information before updatingyour phone firmware.Back Up All Data Prior to UpdateTo back up your Gmail information:1. From home, tap Apps > Settings > Accounts > Google.2. Tap On/Off next to each option to enable backup.3. Tap More > Sync now to sync your Google Account information.To back up your Exchange Mail information:1. From home, tap Apps > Settings > Accounts > Microsoft Exchange ActiveSync.2. Tap On/Off next to each option to enable backup.3. Tap More > Sync now to sync your Google Account information.To back up stored text messages:1. From home, tap Apps > Messaging .2. Select the text message from the list to view the message thread.