LG Q720CS Owners Manual - Page 140

Calls are not available, No network connection or dropped network

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-- If you play high-end games, record videos, or upload large files, the device may overheat for a prolonged period. In this case, a warning message may appear to notify automatic shutdown. Turn off the device or close any running apps or features, and let the device cool down. • The screen brightness and the operating speed may be limited to cool down the device. Any running apps or features may slow down or stop. The device may stop charging. SIM card error Make sure the SIM card is correctly inserted. No network connection or dropped network Signal is weak. Move to a window or an open area. You are outside the carrier network area. Move and check the network. Calls are not available New network not authorized. Make sure you have not set call barring for the incoming number. Make sure you have not set call barring for the number you are dialing. Device cannot be turned on When the battery is completely discharged, your device will not turn on. Fully charge the battery before turning on the device. Charging error Make sure the device is charging at a moderate temperature. Check the charger and its connection to the device. Use only in-box accessories which are authorized by LG. The battery depletes faster than when first purchased When you expose the device or the battery to very cold or hot temperatures, the battery life may be reduced. Appendix 139

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Appendix
139
-
If you play high-end games, record videos, or upload large files, the
device may overheat for a prolonged period. In this case, a warning
message may appear to notify automatic shutdown.
Turn off the device or close any running apps or features, and let the
device cool down.
•
The screen brightness and the operating speed may be limited to cool
down the device. Any running apps or features may slow down or stop.
The device may stop charging.
SIM card error
Make sure the SIM card is correctly inserted.
No network connection or dropped network
Signal is weak. Move to a window or an open area.
You are outside the carrier network area. Move and check the network.
Calls are not available
New network not authorized.
Make sure you have not set call barring for the incoming number.
Make sure you have not set call barring for the number you are dialing.
Device cannot be turned on
When the battery is completely discharged, your device will not turn on.
Fully charge the battery before turning on the device.
Charging error
Make sure the device is charging at a moderate temperature.
Check the charger and its connection to the device.
Use only in-box accessories which are authorized by LG.
The battery depletes faster than when first purchased
When you expose the device or the battery to very cold or hot
temperatures, the battery life may be reduced.