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location services, such as map and navigation applications, or internet services,
ensure that there is an active wireless connection to the Internet and the function of
the GPS satellites in the [Application Menu] > [Settings] > [Location].
17. Smartphone software update by OTA
From time to time, the manufacturer provides system software update, so that the devices receive
new possibilities, patches, etc. There is an application in the system [System update]. It allows you
to check whether any update is available and if so, you can download it from the internet and
install on the device.
The internal memory of the device is NOT used for updating system software, so during the
upgrade process you may receive the message "Downloading and installing an update requires an
SD card." It means that the update file is so large that it does not fit in the standard cache
memory of the device. Therefore, to properly perform the update process, insert the SD card
containing enough free space and specify it in the system as an external memory. If the card is
specified as an extension of internal memory, the update will not be possible.
Remember that updates tend to have an expected size counted in hundreds of megabytes,
so we recommend that you carry them out when connected via Wi-Fi. Updating via the GSM
network may contribute to the operator charging for data downloaded from the internet.
Please remember that before upgrading, the battery charge level should be higher than 30%.
If it is lower, plug the device to the power grid and charge the battery at least to 30%.
While updating the device might restart on its own a few times. You should not remove the
battery or use any of device features, as this may cause the device to stop working.
18. Safe use of the battery
The battery may be charged with USB port in the computer or laptop. Nevertheless, it is not a
recommended form of charging an operating device due to the low charging current offered by the
USB - even though the device is connected to a power source battery can still gets discharged. If
you wish to charge your device this way turn off the device. If the battery level is low, recharge it
to continue the use of the device. If you wish to prolong the battery life span, discharge the
battery beneath 20% of the battery capacity and charge it back to 100%. If not used, unplug the
charger from the device. Excessive charging might cause shortened battery life. The temperature of
the battery has an impact on its charging cycle. Prior to the charging process, cool the battery or
raise its temperature so that it is similar to the room temperature. If the battery temperature
exceeds 40°C the battery must not be charged! Do not use a damaged battery! The battery life
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