Galaxy A31: Device Layout & Functions

Last Update date : Dec 11. 2020

Immerse yourself in the large 6.4-inch Infinity-U Display of Galaxy A31. A wide aspect ratio fills your screen with content from edge to edge. Watch your favorite videos, games and live streams in vivid FHD+ Super AMOLED. Everything you want in a phone in a slim body. Housing a large 5,000mAh(typical) battery in the 8.6 mm-thick device, Galaxy A31 fits right in your hand and comes in a geometric design with a glossy finish. If you would like to learn more about your Galaxy A31 you can also check out our Galaxy A31 Smart Simulator.

** Infinity Display: a near bezel-less, full-frontal glass, edge-to-edge screen

*** Measured diagonally, the screen size is 6.4" in the full rectangle and 6.2" with accounting for the rounded corners. Actual viewable area is less due to the rounded corners and the camera cutout.

Please Note: This guide is designed for Australian variant Galaxy devices, if you have an international device and require further support click here to get in touch with your Samsung subsidiary.

Galaxy A31 device layout - front and back

To see the full specs of the Galaxy A31 click here, if you would like to view the full Galaxy A31 User Manual click here.

Charging the battery

It is recommended to charge the battery before using it for the first time or when it has been unused for extended periods. Please ensure you charge your device only with Samsung approved chargers and cables. Unapproved chargers and cables could damage your device. The Galaxy A31 has an in-built fast charging feature, you can easily enable this by heading into your Settings Device Care > Battery Charging > Toggle on Fast charging.

Please Note: The Galaxy A31 can not be wirelessly charged. If you are trying to enable Fast Charging function within the Device Care settings ensure that you are not cable charging the device prior to activating.

1 Connect the USB cable to the USB power adaptor.
2 Plug the USB cable into the device’s multipurpose jack.
Insert Type C cable into device's multipurpose jack
3 Plug the USB power adaptor into an electric socket.
4 Plug the USB power adaptor into an electric socket. After fully charging, disconnect the charger from the device. Then, unplug the charger from the electric socket.

Inserting the SIM card

SIM card installation
1 Insert the ejection pin into the hole next to the tray to loosen the tray.

Ensure that the ejection pin is perpendicular to the hole. Otherwise, the device may be damaged.

2 Pull out the tray gently from the tray slot.

When you remove the tray from the device, the mobile data connection will be disabled.

3 Place a memory card on the SIM card tray with the gold-coloured contacts facing downwards.
4 Gently press the SIM card into the SIM card tray to secure it.

If the card is not fixed firmly into the tray, the SIM card may leave or fall out of the tray.

5 Insert the tray back into the tray slot.

Caution:
  • If you insert the tray into your device while the tray is wet, your device may be damaged. Always make sure the tray is dry.
  • Fully insert the tray into the tray slot to prevent liquid from entering your device.

Inserting the SD card

With 128GB internal and up to 512GB external storage, you'll have plenty of room to stream, download and post. Please note that some SD cards may not be compatible with your device depending on the memory card manufacturer and type.

SD card installation
1 Insert the ejection pin into the hole next to the tray to loosen the tray.

Ensure that the ejection pin is perpendicular to the hole. Otherwise, the device may be damaged.

2 Pull out the tray gently from the tray slot.

When you remove the tray from the device, the mobile data connection will be disabled.

3 Place a memory card on the memory card tray with the gold-coloured contacts facing downwards.
4 Gently press the memory card into the memory card tray to secure it.

If the card is not fixed firmly into the tray, the SD card may leave or fall out of the tray.

5 Insert the tray back into the tray slot.

Caution:
  • If you insert the tray into your device while the tray is wet, your device may be damaged. Always make sure the tray is dry.
  • Fully insert the tray into the tray slot to prevent liquid from entering your device.

Need help formatting or safely removing your SD card? Check out our page Formatting and Removing MicroSD card from Samsung Phone for step-by-step instructions.

Powering the Device On / Off

Power off device options

As the Power and Bixby functions have now been intergrated to one button it may seem tricky powering your device on or off. Fortunately, there are a few different ways of powering your Galaxy A31 off. Either through your Quick Panel, using the hard keys or activiating Bixby Voice and saying "Turn off the phone." Click one of the drop down menus below to learn all the different ways of powering down your Galaxy A31.

Using the Quick Panel
1 Swipe down to access your Quick Settings and tap on the Power Icon button.
Tap the power button via your Quick Settings panel
2 Select Power off iconPower Off
Using the Hard Keys

Powering off via Side Key

On Galaxy A31, you can remap the power off menu by pressing and holding the Side key unlike previous devices. If you are pressing the side key and noticing that only Bixby is being launched, you may need to customise your Side key functions.

1 Launch Settings > Advanced Features
Settings > Advanced Features
2 Tap on Side Key
Tap on Side Key
3 Under Press and Hold, select Power off menu
Under Press and Hold, select Power off menu

Using the Side & Volume Keys

1 Press and hold the Side and Volume down keys.
2 Tap on Power Off
Using Bixby Voice

If you would like to use Bixby Voice to power off your device, it is important to remember that you will need to sign into your Samsung Account, an internet connection either mobile data or a Wi-Fi connection and completely setup Bixby Voice.

1 Launch Bixby by saying Hi, Bixby
2 Tell Bixby to Turn off your phone
Tell Bixby to Turn off your phone
3 Bixby will then ask you to reconfirm your request.

You will be able to confirm the command by saying Yes or tapping the Power off button.

Once confirmed, your A31 will shut down.
Reconfirming Power off request - either say Yes or tap on the Power off button

Thank you for your feedback!

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