Infinity-U Display gives you more room to watch and play

Galaxy M31’s expansive 6.4-inch Infinity-U Display lets you see more of what you love. The Super AMOLED FHD+ technology offers vibrant details for an immersive viewing experience whether you're watching movies, playing your favorite games or multi-tasking.

Infinity-U Display gives you more room to watch and play Infinity-U Display gives you more room to watch and play

* Images simulated for illustrative purposes.
** Infinity Display: a near bezel-less, full-frontal, edge-to-edge screen.
*** Actual viewable area is less due to the rounded corners and camera hole.
**** Measured diagonally, the screen size is 6.4" in the full rectangle and 6.2" with accounting for the rounded corners.

  • Versatile Quad camera to document your life
    Quad camera
  • Performance-boosting hardware for fast speeds and streams
    Performance
  • Power to get through your day
    Battery

Chic design with a contemporary look

The streamlined body of Galaxy M31 is made to fit comfortably in your hand. The 2.5D design is modern and the premium glossy finish adds a touch of style. Choose from three colors including black, red or blue.

Chic design with a contemporary look Chic design with a contemporary look

* Color availability may vary by country or carrier.

Versatile Quad camera to document your life

For life's unexpected moments, Quad Camera has you covered. Snap stunning photos of your world with a 64MP Main Camera or get the wider picture with the 8MP Ultra Wide Camera’s 123° angle of view. A 5MP Depth Camera blurs the background while the 5MP Macro Camera keeps close-ups in focus.

Versatile Quad camera to document your life Versatile Quad camera to document your life

Capture your world in ultra wide

See more in your photos with the Ultra Wide Camera. The 81-degree wide angle and 123-degree ultra wide angle capture the scene as you see it, so you won't miss the moment from where you stand. Now it's even easier to get a great panorama.

* Images simulated for illustrative purposes.
** Ultra wide angle photo and video are only supported on the rear camera.
* Images simulated for illustrative purposes.
** Ultra wide angle photo and video are only supported on the rear camera.

Macro Camera that captures the up-close details

Quad Camera built-in 5MP Macro Cam (40mm) shoots with clarity and quality helping you bring out the ultra-fine details of your close-up shots. Apply and adjust natural background blur (Bokeh) to isolate your subject and increase its visual impact.

* Images simulated for illustrative purposes.
** Macro Camera feature supported for rear camera only.

Macro Camera that captures the up-close details Macro Camera that captures the up-close details

* Images simulated for illustrative purposes.
** Macro Camera feature supported for rear camera only.

A camera to let you explore depth

The 5MP Depth Camera lets you adjust the depth of field before and after you nail the shot. It reduces unwanted background noise from your images to make them look more professional.

* Images simulated for illustrative purposes.
* Images simulated for illustrative purposes.

A selfie camera to see yourself in a new light

Capture your best angles with Galaxy M31's 32MP front camera. Use Live focus to gently blur the background so all eyes are on you, and get your good side whether you're at a café or at the park.

* Images simulated for illustrative purposes.

A selfie camera to see yourself in a new light A selfie camera to see yourself in a new light

* Images simulated for illustrative purposes.

Performance-boosting hardware for fast speeds and streams

A powerful Octa-core processor and 6GB/8GB of RAM to handle your graphic-heavy games and livestreams at fast speeds. With 64/128GB of internal memory, you have plenty of room to stream, download, and post.

Performance-boosting hardware for fast speeds and streams Performance-boosting hardware for fast speeds and streams

* RAM and internal memory capacity may vary depending on country or region.
** Actual storage available may vary depending on pre-installed software.
*** MicroSD card sold separately.

Power to get through your day

Whether you’re watching movies or video chatting, you need a phone that can keep up. Galaxy M31’s 6,000mAh (typical*) battery lets you spend more time doing what you love, while up to 15W Fast Charging capability delivers more charge in less time.

* Typical value tested under third-party lab conditions. Typical value is the estimated average value considering the deviation in battery capacity among the battery samples tested under IEC 61960 standard. Rated (minimum) capacity is 5,830 mAh. Actual battery life may vary depending on network environment, user settings, usage patterns, remaining capacity, and other factors.

Power to get through your day Power to get through your day

* Typical value tested under third-party lab conditions. Typical value is the estimated average value considering the deviation in battery capacity among the battery samples tested under IEC 61960 standard. Rated (minimum) capacity is 5,830 mAh. Actual battery life may vary depending on network environment, user settings, usage patterns, remaining capacity, and other factors.

Game Booster gives you the edge

Maximize performance with Game Booster. Cut distractions and up your game with a dedicated interface and easy-to-reach menu. Frame Booster gives graphics smooth, life-like motion. And play at your best as Game Booster learns your usage patterns to optimize battery, temperature and memory.

Game Booster gives you the edge Game Booster gives you the edge

Convenient mobile security

  • * Accuracy of Face Recognition technology may differ depending on surrounding conditions.
  • * Accuracy of Face Recognition technology may differ depending on surrounding conditions.

Keep your device in tip-top condition with us

Enjoy peace of mind when you choose to buy a Galaxy smartphone. The Interactive diagnostics and optimization on Samsung Members app makes it easy to tune up the performance of your devices, while our helpline lets you troubleshoot problems when you need the extra assistance.

Keep your device in tip-top condition with us Keep your device in tip-top condition with us

* The available functions and features for Samsung Members app may vary by country and device.
** Device and image simulated for illustrative purposes.

Specifications

  • CPU Speed 2.3GHz, 1.7GHz
  • Resolution (Main Display) 2340 x 1080 (FHD+)
  • Weight (g) 191
  • Audio Playback Time (Hours) Up to 119
Galaxy M31(SM-M315FZKVKSA) is rated 3.5 out of 5 by 2.
  • y_2021, m_5, d_8, h_18
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Rated 3 out of 5 by from It misses many important features For example ... the private mode does not exist, and the Secure Folder also does not exist ... and many of the features that were in my previous phone S7 Edge, are not present. Also, the performance is not good, especially after a period of use and the phone...and space is more than half empty..Only basic programs are used ...no games installed..and the device suffers from a lot of slowness..and suddenly hangs and crashes. The best thing about the phone is the battery when you put it on the power saver only ... it works very efficiently so far, but only when the power saver is activated ... and if I don't activate the power saver, the phone drains the battery faster. i gave overall 3 stars because good value for battery and Stroger space ..
Date published: 2021-03-28
Rated 4 out of 5 by from SAMSUNG M31 REVIEW I bought this smartphone 8 months ago and this very good in performance, battery, camera etc all are functioning very nice.
Date published: 2021-03-29
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* Key feature may different from Key Spec

* Battery : Actual battery life varies by network environment, features and apps used, frequency of calls and messages, number of times charged, and many other factors.

* User Available Memory : User memory is less than the total memory due to storage of the operating system and software used to operate the device features. Actual user memory will vary depending on the operator and may change after software upgrades are performed.

* Network : The bandwidths supported by the device may vary depending on the region or service provider.

*Image at the top of page of Galaxy Note20 Ultra 5G laying facedown simulated for illustration purposes.

*Image at the top of page of Galaxy Z Fold2 unfolded and seen from the front with the butterfly graphic wallpaper onscreen simulated for illustration purposes.

* All specifications and descriptions provided herein may be different from the actual specifications and descriptions for the product. Samsung reserves the right to make changes to this web page and the product described herein, at anytime, without obligation on Samsung to provide notification of such change. All functionality, features, specifications, GUI and other product information provided in this web page including, but not limited to, the benefits, design, pricing, components, performance, availability, and capabilities of the product are subject to change without notice or obligation. The contents within the screen are simulated images and are for demonstration purposes only.

* Battery capacity(mAh, Typical) - Typical value tested under third-party laboratory condition. Typical value is the estimated average value considering the deviation in battery capacity among the battery samples tested under IEC 61960 standard. Rated (minimum) capacity is 5,830 mAh. Actual battery life may vary depending on network environment, usage patterns and other factors.

* Display size : 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 camera hole.