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13 Troubleshooting
Before contacting Optus follow the instructions below:
• Fully charge the battery for optimal operation.
• Avoid storing large amounts of data on your phone as this may affect
its performance.
• Use the FOTA (Firmware Over The Air) Upgrade tool to update your
phone's software. To open System updates, go to Settings > About
phone > System updates.
Touch
and the phone will search for the latest software. If you
want to update the system, touch the
button, and when that’s
finished, touch
to complete the upgrade. Now your phone will
have the latest software version. You should turn on data connection
or Wi-Fi before searching for updates. Auto-check settings are also
available. If you have chosen auto-check, when the system discovers
the new version, a dialog will pop up to choose download or ignore, the
notification will also appear in the status bar.
Don't change your default storage location while FOTA is downloading
or updating to avoid errors in locating the correct update packages.
• Use Factory data reset and Mobile Upgrade tool to perform phone
formatting or software upgrading (to reset factory data, hold down
the Power key and the Volume up key at the same time under power
off mode). ALL User phone data: contacts, photos, messages and
files, downloaded applications will be lost permanently. It is strongly
advised to fully back up the phone data and profile via Smart Suite
before doing formatting and upgrading.
• Please pay attention that after Factory data reset is performed you
may be requested to enter Google account credentials* that were
used on this device before Factory reset. Otherwise you will not be
able to use the device. If you don’t remember your Google account
credentials please complete Google account recovery procedure. In
case you don’t succeed in it - please apply to authorized repair center,
but remember that it will not be regarded as warranty case.
* Applicable for Android OS versions starting from 5.1.
and carry out the following checks:
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