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Samsung Galaxy C9 Pro SM-C900F/DS SM-C900FZDDXEV, SM-C900FZKDXEV Device maintenance, Using the quick optimisation feature, On the Settings screen, tap Device maintenance →FIX NOW or OPTIMISE NOW

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Settings

Device maintenance

The device maintenance feature provides an overview of the status of your device’s battery, storage, RAM, and system security. The device maintenance feature allows you to easily optimise your device and ultra data saving mode helps you manage your mobile data usage.

Device security

Battery

Storage						RAM

Using the quick optimisation feature

On the Settings screen, tap Device maintenance →FIX NOW or OPTIMISE NOW.

The quick optimisation feature improves device performance through the following actions.

•Clearing some memory.

•Deleting unnecessary files and closing apps running in the background.

•Managing abnormal battery usage.

•Scanning for malware.

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Contents

Page Table of Contents Settings Appendix Basics Read me first Instructional icons Device overheating situations and solutions When the device heats up while charging the battery Do the following when the device heats up: When the device heats up during use Device limitations when the device overheats Precautions for operating environment Package contents Device layout Page Keys Battery Charging the battery Charging with a Micro USB cable Viewing the remaining charging time Reducing the battery consumption Battery charging tips and precautions Fast charging About Fast charging Increasing the charging speed Power saving mode Maximum power saving mode SIM or USIM card Installing the SIM or USIM card Page Removing the SIM or USIM card Using dual SIM or USIM cards Activating SIM or USIM cards Customising SIM or USIM cards Setting preferred SIM or USIM cards Memory card (microSD card) Installing a memory card Removing the memory card Formatting the memory card Turning the device on and off Restarting the device Touchscreen Tapping Tapping and holding Dragging Double-tapping Swiping Spreading and pinching Home screen Home screen Home screen options Adding items Moving items Removing items Creating folders Managing panels Using quick options Apps screen Rearranging items Searching for items Indicator icons Lock screen Always On Display Setting the schedule for the Always On Display feature Opening notifications when the screen is off Controlling music playback when the screen is off Notification panel Using the notification panel Using quick setting buttons Finder Searching for content or nearby devices Setting search categories Entering text Keyboard layout Changing the input language Changing the keyboard layout Additional keyboard functions Copying and pasting Dictionary Screen capture Capturing screenshots Smart capture Opening apps Closing an app Secure Folder Introduction Creating Secure Folder Setting auto lock for Secure Folder Moving content Adding apps Removing apps from Secure Folder Adding accounts Hiding Secure Folder Uninstalling Secure Folder Multi window Split screen view Using additional options Page Adjusting the window size Pop-upview Moving pop-upwindows Samsung account Registering your Samsung account Registering a new Samsung account Registering an existing Samsung account Removing your Samsung account Transferring data from your previous device Transferring data from a mobile device Transferring backup data from a computer Device and data management Using the device as a removable disk for data transfer Updating the device Updating over the air Updating with Smart Switch Backing up and restoring data Using a Samsung account Using a Google account Performing a data reset QUICK CONNECT Connecting to other devices Connecting to a TV Streaming content on the registered TV Sharing features Emergency mode Deactivating emergency mode Applications Installing or uninstalling apps Galaxy Apps Installing apps Play Store Managing apps Uninstalling or disabling apps Enabling apps Setting app permissions Phone Making calls Using speed dial Making calls from the locked screen Making calls from call logs or contacts list Receiving calls Answering a call Rejecting a call Missed calls Blocking phone numbers Options during calls During a voice call During a video call Contacts Adding contacts Creating contacts manually Importing contacts Searching for contacts Sharing profile Sharing contacts Messages Sending messages Viewing messages Blocking unwanted messages Setting the message notification Setting a message reminder Internet Browsing webpages Using secret mode Activating secret mode Changing security settings Deactivating secret mode Email Setting up email accounts Sending emails Reading emails Camera Launching Camera Using swipe gestures Switching cameras Viewing shooting modes Viewing filter effects Basic shooting Taking photos or recording videos Locking the focus and exposure Customising shooting modes Auto mode Pro mode Panorama Continuous shot HDR (Rich tone) Night Food Selfie Using the selfie flash Applying beauty effects Wide selfie Downloading modes Camera settings Quick settings Camera settings Gallery Viewing images or videos Viewing images Searching for images Viewing videos Viewing albums Viewing stories Creating stories Sharing stories Deleting stories Deleting images or videos Deleting an image or a video Deleting multiple images and videos Sharing images or videos Samsung Members Feedback Community Support News & tips Game Launcher Using Game Launcher Removing a game from Game Launcher Activating game power saving mode Using Game Tools Blocking notifications during games Samsung Notes Creating notes Deleting notes Calendar Creating events Creating tasks Syncing events and tasks with your accounts S Health Starting S Health Using S Health Additional information S Voice Setting a wake-upcommand Using S Voice Tips for better voice recognition Setting the language Voice Recorder Making voice recordings Changing the recording mode Playing selected voice recordings My Files Clock ALARM Setting alarms Stopping alarms Deleting alarms Calculator USB Backup Radio Listening to the FM radio Scanning radio stations S Secure Lock and hide apps Locking apps Hiding apps Secure Wi-Fi Google apps Chrome Gmail Maps Play Music Play Movies & TV Drive YouTube Photos Settings Introduction Connections Wi-Fi Connecting to a Wi-Finetwork Wi-FiDirect Sending and receiving data Ending the device connection Bluetooth Pairing with other Bluetooth devices Sending and receiving data Unpairing Bluetooth devices Device visibility Data usage Limiting data usage Flight mode NFC and payment Using the NFC feature Making payments with the NFC feature Sending data Mobile hotspot and tethering Using the mobile hotspot Mobile networks SIM card manager Location More connection settings Printing Printing content MirrorLink Connecting your device to a vehicle via MirrorLink Ending the MirrorLink connection Download booster Sounds and vibration Notifications Display Options Blue light filter Easy mode Switching to easy mode Returning to standard mode Managing shortcuts Wallpapers and themes Advanced features Send SOS messages Adding emergency contacts Device maintenance Using the quick optimisation feature Battery Managing the battery Storage Managing the memory RAM Device security Ultra data saving Applications Lock screen and security Fingerprint recognition For better fingerprint recognition Registering fingerprints Deleting fingerprints Verifying the Samsung account password Using fingerprints to sign in to accounts Unlocking the screen with fingerprints Cloud and accounts Samsung Cloud Cloud usage Sync settings Backup and restore Accounts Adding accounts Removing accounts Backup Google Accessibility General management Software update User manual About device Appendix Troubleshooting Forcing restart Resetting the device Calls are not connected Others cannot hear you speaking on a call Sound echoes during a call The battery icon is empty The battery does not charge properly (For Samsung-approvedchargers) The battery depletes faster than when first purchased Your device is hot to the touch Error messages appear when launching the camera Photo quality is poorer than the preview Error messages appear when opening multimedia files Another Bluetooth device is not located A connection is not established when you connect the device to a computer Your device cannot find your current location Data stored in the device has been lost A small gap appears around the outside of the device case There is not enough space in the device’s storage Copyright Trademarks