Samsung GT-S7390L User Manual

Troubleshooting94Sound echoes during a callAdjust the volume by pressing the Volume button or move to another area.A cellular network or the Internet is often disconnected or audioquality is poor• Ensure that you are not blocking the device’s internal antenna.• When you are in areas with weak signals or poor reception, you may lose reception. Youmay have connectivity problems due to issues with the service provider’s base station.Move to another area and try again.• When using the device while moving, wireless network services may be disabled due toissues with the service provider’s network.The battery icon is emptyYour battery is low. Recharge or replace the battery.The battery does not charge properly (For Samsung-approvedchargers)• Ensure that the charger is connected properly.• If the battery terminals are dirty, the battery may not charge properly or the device mayturn off. Wipe both gold-coloured contacts and try charging the battery again.• The batteries in some devices are not user-replaceable. To have the battery replaced, visita Samsung Service Centre.The battery depletes faster than when first purchased• When you expose the battery to very cold or very hot temperatures, the useful chargemay be reduced.• Battery consumption increases when you use messaging features or some applications,such as games or the Internet.• The battery is consumable and the useful charge will get shorter over time.