Xiaomi Redmi 15 4G

The Xiaomi Redmi 15 4G has a tall, non-folding form factor measuring 171.1 mm in height, 82.1 mm in width, and 8.6 mm in thickness, with a total volume of approximately 120.81 cm³ and a weight of 224 g. It carries an IP64 ingress protection rating, meaning it is rated water resistant and capable of withstanding dust exposure, though it does not feature a ruggedized build.

The Xiaomi Redmi 15 4G features a 6.9″ IPS LCD touchscreen with a resolution of 1080 x 2340 pixels and a pixel density of 374 ppi, delivering a reasonably sharp image across its large panel. Its 144Hz refresh rate and 288Hz touch sampling rate contribute to smooth on-screen motion and responsive input, while the display is protected by Gorilla Glass 3 to help resist everyday scratches and minor impacts. The screen does not support HDR10, HDR10+, or Dolby Vision, and there is no Always-On Display mode or secondary screen.

The Xiaomi Redmi 15 4G is driven by the Qualcomm Snapdragon 685 4G, a 6 nm octa-core chipset configured with four performance cores at 2.8 GHz and four efficiency cores at 1.9 GHz, supported by 8GB of DDR4 RAM running at 2133 MHz and 256GB of eMMC 5.1 internal storage, with a maximum supported memory amount of 16GB. The chip uses big.LITTLE technology, integrates LTE, and pairs with an Adreno 610 GPU clocked at 1260 MHz, supporting DirectX 12, OpenGL ES 3.2, and OpenCL 2, with a maximum memory bandwidth of 17 GB/s. In benchmarks, the device scores 358,084 on AnTuTu, 473 single-core and 1,510 multi-core on Geekbench 6, and 442 single-core and 1,787 multi-core on Geekbench 5. The SoC is fully 64-bit capable and includes both NX bit and TrustZone security features across its 8 CPU threads.

The Xiaomi Redmi 15 4G uses a single rear camera with a 50 MP CMOS sensor at f/1.8 aperture and a pixel size of 0.64 µm, capable of recording video at 1080p 30fps with continuous autofocus, slow-motion support, and no optical image stabilization or optical zoom. Autofocus options include phase-detection and touch autofocus, while the manual controls on offer cover exposure, ISO, focus, and white balance, though manual shutter speed and RAW capture are not available. The camera also supports HDR mode, burst shooting, in-camera panoramas, and timelapse, while flash is handled by a single LED unit with no dual-tone or RGB configuration. On the front, an 8 MP camera sits behind an f/2.0 aperture lens in a standard (non-under-display) placement, without a dedicated flash or a secondary lens, and HDR10 and Dolby Vision recording are absent from both cameras.

The Xiaomi Redmi 15 4G ships with Android 15 and brings a broad set of privacy controls, including clipboard warnings, location privacy options, camera and microphone access management, and app tracking blocking, though cross-site tracking blocking and Mail Privacy Protection are not included. On the customization side, it supports dynamic theming, theme customization, dark mode, extra dim mode, customizable notifications, widgets, and split-screen multitasking, while focus modes and Quick Start are absent. Productivity and usability are further covered through Picture-in-Picture, full-page screenshots, a media picker, sharing intents, Live Text, the ability to offload apps, and support for playing games while they download. The device also includes on-device machine learning, offline voice recognition, voice commands, phone tracking, a child lock, multi-user support, and a battery health check, but does not receive direct OS updates from the vendor and cannot be used as a PC.

The Xiaomi Redmi 15 4G houses a 7000 mAh rechargeable battery that is non-removable and supports 33W wired fast charging, with a charger included in the box. Wireless charging and reverse wireless charging are not available, making wired charging the only replenishment option. The device includes a battery level indicator and an ultra power-saving mode for extending usage when the charge runs low.

The Xiaomi Redmi 15 4G has a notably limited audio feature set: it lacks a 3.5 mm headphone jack and stereo speakers, offering only a single speaker configuration. On the wireless audio side, none of the high-quality Bluetooth codec options are supported, including aptX, aptX HD, aptX Adaptive, aptX Lossless, and LDAC, and there is no built-in radio receiver.

The Xiaomi Redmi 15 4G supports dual SIM cards and connects wirelessly via Wi-Fi 4 (802.11n) and Wi-Fi 5 (802.11ac), Bluetooth 5.0, and NFC, while 5G is not available on this model. Wired connectivity is handled through a USB Type-C port running at USB 2.0 speeds, with no HDMI output, and there is no external memory slot for storage expansion. Cellular download speeds reach up to 390 Mbits/s and upload up to 150 Mbits/s. For navigation, the device includes GPS with Galileo support alongside a compass and accelerometer, though it lacks a gyroscope, barometer, infrared sensor, heart rate monitor, and motion or optical tracking. Security biometrics are covered by a fingerprint scanner, with no 3D facial recognition or iris scanner present, and features such as crash detection, satellite SOS, ANT+, DLNA certification, and a built-in projector are all absent.

The Xiaomi Redmi 15 4G includes a video light for use during video recording, while its display is flat rather than curved and uses neither sapphire glass nor an e-paper panel.