Realme 15T 5G VS Vivo Y31 5G

Both the Realme 15T 5G and Vivo Y31 5G are waterproof, with an IP68 rating, meaning they can withstand dust and immersion in water. However, the Realme 15T 5G offers a deeper waterproof depth rating of 2.5 meters, compared to the Vivo Y31 5G's 1.5 meters, which may indicate a slightly more robust water resistance in the Realme device.

When it comes to physical size, the Realme 15T 5G is slightly more compact and lighter, weighing 181g with a thickness of 7.8mm, while the Vivo Y31 5G weighs 209g and has a thickness of 8.4mm. The Realme device is also smaller in width (75.2mm vs 77mm) and height (158.4mm vs 166.1mm), resulting in a more streamlined design overall.

In terms of volume, the Realme 15T 5G has a smaller footprint at 92.91 cm³, while the Vivo Y31 5G has a volume of 107.43 cm³, indicating that the Vivo phone is slightly bulkier. Both devices lack rugged builds and cannot be folded.

The Realme 15T 5G features an OLED/AMOLED display, while the Vivo Y31 5G uses an LCD, IPS display. This difference in display technology may affect factors like color vibrancy and contrast, with OLED/AMOLED typically offering deeper blacks and more vivid colors compared to LCD. The Realme device also has a higher pixel density of 401 ppi, compared to the Vivo's 264 ppi, which means the Realme display can offer sharper visuals. Additionally, the Realme 15T 5G has a higher resolution of 1080 x 2372 px, while the Vivo Y31 5G has a lower resolution of 720 x 1608 px, contributing to a clearer image on the Realme phone.

Both phones come with a 120Hz refresh rate, ensuring smooth scrolling and responsiveness. However, the Realme 15T 5G has the added advantage of an Always-On Display feature, which is absent on the Vivo Y31 5G. This feature allows users to see notifications, time, and other information on the screen without unlocking the phone.

In terms of durability, the Vivo Y31 5G has branded damage-resistant glass, while the Realme 15T 5G does not mention any such feature. Neither phone supports HDR10 or HDR10+, nor do they have Dolby Vision or a secondary screen. Both devices also include a touch screen for easy navigation.

The Realme 15T 5G is equipped with 256GB of internal storage and 12GB of RAM, while the Vivo Y31 5G offers 128GB of internal storage and 6GB of RAM. This gives the Realme device more storage and RAM capacity, which could provide smoother multitasking and more room for apps and files. Both phones feature integrated LTE, 64-bit support, and DirectX 12 compatibility, ensuring they can handle modern apps and games effectively.

When it comes to the chipset, the Realme 15T 5G is powered by the MediaTek Dimensity 6400, while the Vivo Y31 5G uses the Qualcomm Snapdragon 4 Gen 2. Both chipsets are built on advanced semiconductor processes, with the Realme’s 6nm process being slightly larger than the Vivo’s 4nm process. In terms of CPU performance, both devices feature octa-core processors with similar configurations: the Realme has 2 cores running at 2.5GHz and 6 cores at 2.0GHz, while the Vivo has 2 cores at 2.3GHz and 6 cores at 2.0GHz. The slight difference in the peak clock speeds suggests the Realme might have a small advantage in processing power.

The GPU in the Realme 15T 5G is the Arm Mali-G57 MC2, running at a clock speed of 950 MHz, while the Vivo Y31 5G is equipped with the Adreno 613, clocked at 955 MHz. The difference in GPU clock speeds is minimal, but the Realme's GPU may provide a slightly different performance profile. Additionally, the Realme uses DDR4 RAM at 2133 MHz, whereas the Vivo uses faster DDR5 RAM at 3200 MHz. The Vivo device also supports two displays, while the Realme supports just one.

The Realme 15T 5G features a dual-lens main camera with a 50MP and 2MP configuration, while the Vivo Y31 5G has a single 50MP main camera. Both devices have a wide aperture of f/1.8, but the Realme offers a second lens, which may provide more flexibility in capturing different types of shots. For video recording, the Realme supports 1080p at 60fps, while the Vivo supports 1080p at 30fps, offering a higher frame rate on the Realme for smoother video capture.

On the front, the Realme 15T 5G has a much higher resolution 50MP front camera, compared to the Vivo Y31 5G's 8MP front camera. This gives the Realme device a significant advantage in terms of selfie quality, especially in terms of detail. Both phones offer various camera features like continuous autofocus, phase-detection autofocus, slow-motion video recording, HDR mode, and manual controls for exposure, ISO, white balance, and focus.

In terms of flash, the Realme 15T 5G has a single flash LED, while the Vivo Y31 5G has two LEDs for potentially brighter lighting in low-light conditions. Neither device features a front-facing LED flash or a dual-lens front camera. Both phones also support in-camera panorama creation and timelapse functions, but neither shoots in RAW format or supports HDR10 or Dolby Vision recording.

Both the Realme 15T 5G and Vivo Y31 5G run on Android 15, offering the same core operating system. They also share a similar set of features, such as clipboard warnings, location privacy options, camera/microphone privacy options, theme customization, and the ability to block app tracking. Neither phone supports Mail Privacy Protection, and both devices can play games while downloading.

There are no notable differences between the two devices when it comes to functionality like dark mode, battery health check, extra dim mode, dynamic theming, customizable notifications, full-page screenshots, split screen, PiP (Picture-in-Picture), offline voice recognition, voice commands, or tracking the device’s current position. Both phones also support widgets, child locks, sharing intents, and are multi-user systems. Neither device has Quick Start functionality.

Additional features like on-device machine learning, notification permissions, media picker, and the ability to offload apps are also available on both devices. Both devices are free and open-source, but neither gets direct OS updates. They both support manual controls like Live Text and manual ISO, but neither includes a PC-mode function.

The Realme 15T 5G has a larger battery capacity of 7000 mAh, compared to the Vivo Y31 5G's 6500 mAh battery. Both phones support fast charging, but the Realme device offers a higher charging speed of 60W, while the Vivo supports a lower 44W charging speed. Neither device supports wireless charging or reverse wireless charging.

Both phones have a rechargeable battery and a battery level indicator, allowing users to monitor battery status easily. Additionally, neither phone has a removable battery, so users cannot swap out the battery themselves.

Neither the Realme 15T 5G nor the Vivo Y31 5G includes a 3.5mm audio jack, so users will need to rely on wireless audio or USB-C options for wired connections. The Realme 15T 5G does not feature stereo speakers, while the Vivo Y31 5G does, offering a more immersive audio experience for those who prefer speaker-based sound.

Neither phone supports advanced audio technologies such as aptX, LDAC, aptX HD, aptX Adaptive, or aptX Lossless, which may affect the quality of Bluetooth audio streaming. Both devices also lack a radio, meaning users cannot listen to FM or AM broadcasts directly from the phone.

Both the Realme 15T 5G and Vivo Y31 5G support 5G connectivity and offer dual SIM card slots. The Realme 15T 5G supports faster download speeds at 3300 MBit/s, compared to the Vivo Y31 5G's 2500 MBit/s. The Realme device also features Bluetooth 5.3, while the Vivo uses Bluetooth 4.2. Both devices have USB Type-C ports, but they are limited to USB 2.0 speeds.

Regarding sensors, the Realme 15T 5G has a more comprehensive set, including an infrared sensor and a gyroscope, whereas the Vivo Y31 5G lacks the infrared sensor and has no gyroscope. Both phones have GPS and a compass, and they support Galileo for satellite navigation.

Neither device includes NFC, emergency SOS via satellite, or crash detection. Both phones have fingerprint scanners and external memory slots, but the Vivo lacks an infrared sensor and gyroscope. The Realme 15T 5G also features a cellular module, while the Vivo Y31 5G does not have this explicitly mentioned. Neither device supports HDMI output, has a built-in projector, or includes a stylus.

Both the Realme 15T 5G and Vivo Y31 5G are equipped with a video light, which can assist in low-light video recording. Neither device features sapphire glass display protection, a curved display, or an e-paper display, meaning both devices have a standard flat display with typical glass protection.

There are no significant differences between the two devices in this group; they share the same features for video lighting and display characteristics.