Factory Data Reset - Code CR4900Android User Manual

18 ‐ Troubleshooting
User Manual Guide
Please note your device is designed with a removable battery.
Unauthorized personnel are strictly prohibited from disassembling the
device.
If your device isn't working normally, try to restart it by pressing and
holding the Power key for at least 7 seconds until the startup screen
appears.
If your device develops a serious error and can't be restored by restarting it,
you may need to restore factory settings by pressing and holding the Power
key and Volume up key until the startup screen appears. Then select "reboot
system now" and press the Power key to confirm.
Note: Please take care when performing such operations because they will
erase personalized settings and data saved in your device, such as SMS,
Contacts, Music, etc.
Make sure you are using a 5V 2A USB Power Adapter. We recommend the use
of the Code Corporation power supply.
Protect Your Hearing
To prevent possible hearing damage, do not listen at high
volume levels for long periods. Exercise caution when holding
your device near your ear while the loudspeaker is in use.
Before contacting the service centre, you are advised to follow the instructions
below:
• You are advised to fully charge the battery for optimal operation.
• Avoid storing large amounts of data in your device as this may affect its
performance.
• Use Factory data reset and the upgrade tool to perform device formatting or
software upgrading (to reset factory data, hold down the Power key and the
Volume up key at the same time). ALL User device data: contacts, photos,
messages, files, and downloaded applications will be permanently lost. It is
strongly advised to fully backup the device data and profile via Smart Suite before
doing formatting or upgrading.
and carry out the following checks:
My device cannot be switched on or is frozen:
• When the device cannot be switched on, charge for at least 20 minutes to ensure
the minimum battery power needed, then try to switch on again.
• When the device falls into a loop during power on‐off animation and the user
interface cannot be accessed, press and hold the Volume down key to enter Safe
Mode. This eliminates any abnormal OS booting issues caused by 3rd party APKs.
• If neither method is effective, please reset the device using the Power key and the
Volume up key, (holding both together).
My device has not responded for several minutes:
• Restart your device by pressing and holding the Power key for more than 7s.
device turns off by itself:
• Check that your screen is locked when you are not using your device, and make
sure the Power key is not mis‐contacted due to unlocked screen.
• Check the battery charge level.
My device cannot charge properly:
• Make sure you are using a universal charger which complies with these
characteristics: USB Type‐C connector, 5V, min 2A output.
• Make sure that your battery is not completely discharged; if the battery power is
empty for a long time, it may take around 20 minutes to display the battery
charger indicator on the screen.
D006791_CR49XX_User_Manual
FPO
• Make sure charging is carried out under normal conditions (0°C to +40°C).
• When abroad, check that the voltage input is compatible.
My device cannot connect to a network:
• Try connecting in another location.
• Try selecting the available network(s) manually.
• Try connecting at a later time if the network is overloaded.
My device cannot connect to the Internet:
• Check that the IMEI number (press *#06#) is the same as the one printed on your
warranty card or box.
• Check your device's Internet connecting settings.
• Make sure you are in a place with network coverage.
• Try connecting at a later time or another location.
The sound quality of the calls is poor:
• You can adjust the volume during a call by pressing the Volume Up/Down key.
• Check the network strength .
• Make sure that the receiver, connector or speaker on your device is clean.
When I select a number from my contacts, the number cannot be dialed:
• Make sure that you have correctly recorded the number in your file.
• Make sure that you have selected the country prefix when calling a foreign
country.
I am unable to connect my device to my computer:
• Install Smart Suite.
• Check that your USB driver is installed properly.
• Open the Notification panel to check if the Smart Suite Agent has activated.
• Check that your computer meets the requirements for Smart Suite Installation.
• Make sure that you're using the cable included in the box.
I am unable to download new files:
• Make sure there is sufficient device memory for your download.
• Select the microSD card as the location to store downloaded files.
• Check your subscription status with your operator.
The device cannot be detected by others via Bluetooth:
• Make sure that Bluetooth is turned on and your device is visible to other users .
• Make sure that the two devices are within Bluetooth's detection range.
How to make your battery last longer:
• Make sure you follow the complete charge time (minimum 4 hours).
• After a partial charge, the battery level indicator may not be exact. Wait for at
least 20 minutes after removing the charger to obtain an exact indication.
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• Adjust the brightness of screen as appropriate.
• Extend the email auto‐check interval for as long as possible.
• Update news and weather information on manual demand, or increase their auto‐
check interval.
• Exit background‐running applications if they are not being used for a long time.
• Deactivate Bluetooth, WLAN, or GPS when not in use.
The device will become warm following prolonged calls, game playing,
internet surfing or running other complex applications:
• This heating is a normal consequence of the CPU handling excessive data. Ending
above actions will make your device return to normal temperatures.
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