Samsung SM-G388FDSACOS, SM-G388FDSAPLS, SM-G388FDSASEB, SM-G388FDSADPL Sound echoes during a call

Page 93

Troubleshooting

Sound echoes during a call

Adjust the volume by pressing the Volume key or move to another area.

A cellular network or the Internet is often disconnected or audio quality 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. You may 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 to issues with the service provider’s network.

The battery icon is empty

Your battery is low. Charge the battery.

The battery does not charge properly (For Samsung-approved chargers)

Ensure that the charger is connected properly.

If the battery terminals are dirty, the battery may not charge properly or the device may turn off. Wipe both gold-coloured contacts and try charging the battery again.

The battery depletes faster than when first purchased

When you expose the device or the battery to very cold or very hot temperatures, the useful charge may be reduced.

Battery consumption increases when you use messaging features or some apps, such as games or the Internet.

The battery is consumable and the useful charge will get shorter over time.

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Contents SM-G388F Table of Contents Messages & email Read me first Maintaining water and dust resistance Instructional icons Getting started Package contentsDevice layout Keys Installing the SIM or Usim card and battery Using the SIM or Usim card and batteryGetting started Removing the SIM or Usim card and battery Charging the battery Getting started Using a memory card Installing a memory cardReducing the battery consumption Removing the memory card →Settings →Storage →Unmount SD cardFormatting the memory card Attaching a hand strapLocking and unlocking the screen Turning the device on and offUsing the touchscreen BasicsTapping Tapping and holding DraggingDouble-tapping Spreading and pinching SwipingHome screen Home screen layoutHome screen options Apps screen Icon Meaning Indicator iconsNotification panel Using the notification panelUsing the quick setting buttons Rearranging quick setting buttonsInstalling apps Installing or uninstalling appsOpening apps Galaxy AppsPlay Store Uninstalling or disabling appsManaging apps Enabling appsKeyboard layout Entering textChanging the input language Changing the keyboard layoutUsing additional keyboard functions Screen captureCopying and pasting My Files Ultra power saving modeIncreasing touchscreen sensitivity Network connectivity Wi-FiMobile data Tap ConnectUsing the mobile hotspot Tethering and Mobile hotspotAbout tethering and mobile hotspots Using Bluetooth tethering Using USB tetheringTick Bluetooth tethering Tick USB tetheringPersonalising Managing the Home and Apps screensManaging the Home screen Managing panels Managing the Apps screenChanging the sorting method Hiding appsSetting wallpaper Setting wallpaper and ringtonesOn the Apps screen, tap Settings →Sounds and notifications Changing ringtonesPassword Using backup accountsChanging the screen lock method Transferring data from your previous deviceUsing Samsung Smart Switch Using Smart Switch MobileUsing Smart Switch with computers Using Samsung Kies Setting up accountsAdding accounts Removing accountsPhone Making callsMaking calls from call logs or contacts list Answering a call Receiving callsRejecting a call Missed callsOptions during calls During a voice callDuring a video call Adding contacts ContactsMoving contacts from other devices Creating contacts manuallySearching for contacts Adding shortcuts for contacts to the Home screenTap →Add shortcut to home screen Messages & email MessagesSending messages Viewing incoming messages Setting up email accountsSending emails Reading emails Camera Basic shootingTaking photos or recording videos Auto Shooting modesBeauty face Launching Camera on the locked screenContinuous shot PanoramaAqua SportsSelfie Camera settingsCamera Gallery Viewing content on the deviceUseful apps and features PlannerCreating events or tasks Syncing events and tasks with your accounts InternetPlaying videos VideoAlarm ClockWorld clock Calculator TimerMemo StopwatchRecording voice memos Voice RecorderPlaying voice memos Searching for memosListening to the FM radio RadioScanning radio stations Google appsPlay Movies & TV Play MusicPlay Books Play NewsstandGoogle Settings GoogleVoice Search Bluetooth About BluetoothPairing with other Bluetooth devices Sending and receiving data Sending an imageReceiving an image Unpairing Bluetooth devices Wi-Fi DirectAbout Wi-Fi Direct Connecting to other devicesEnding the device connection About NFC Using the NFC featureSending data Making a purchase with the NFC featurePrinting content Connecting to a printerMobile printing Adding printer plug-insUpdating the device Device & data managerUpdating over the air Updating with Samsung KiesConnecting with Samsung Kies Connecting as a media deviceTransferring files between the device and a computer Device MTPUsing a Google account Performing a data resetTap Backup and reset and tick Back up my data Backing up and restoring dataAbout Settings SettingsWi-Fi ConnectionsSetting Wi-Fi sleep policy BluetoothTap →Advanced →Keep Wi-Fi on during sleep Tethering and Mobile hotspotFlight mode Data usageLocation Printing Default messaging appMore networks Mobile networksDevice Sounds and notificationsDisplay Call Lock screenAccessibility Backup and resetPersonal Application managerSettings System Xcover keyLanguage and input Google voice typing Text-to-speech optionsPointer speed Ultra power saving mode BatteryDate and time Security Storage About device Your device displays network or service error messages TroubleshootingTouchscreen responds slowly or improperly Sound echoes during a call Your device is hot to the touch Another Bluetooth device is not located Data stored in the device has been lost Copyright
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