Xiaomi 15 256GB - 5,240mAh Battery and 12GB RAM

Published on 09/09/2026 at 18:21 | Editorial responsibility: Rafael Müller, Editor-in-Chief AD HOC NEWS

Xiaomi 15 256GB pairs 12GB + 256GB storage with a 5,240mAh battery and Android 15. Xiaomi positions the model in the flagship smartphone segment.

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Xiaomi 15 256GB brings 12GB + 256GB storage, a 5,240mAh battery, and HyperOS 2 in a compact 6.36-inch body. Xiaomi lists Snapdragon 8 Elite, a 2670 x 1200 display, and IP68 protection for the model.

Display And Build

The screen measures 6.36 inches and uses a CrystalRes AMOLED panel with 2670 x 1200 resolution, 1-120Hz refresh rate, and up to 3200 nits peak brightness. Xiaomi also lists dimensions of 152.3 mm x 71.2 mm x 8.08 mm for Black, White, and Green models, plus IP68 dust and water resistance.

GSMArena's review lists the 256GB 12GB RAM version at $839.99 and describes the phone as a full-featured flagship with a 6.36-inch LTPO OLED screen and 120Hz refresh rate.

Cameras, Battery, And Software

The rear camera setup combines three 50MP modules: a main camera with Light Fusion 900 sensor, a 60mm telephoto, and a 14mm ultra-wide camera. Xiaomi also lists a 32MP front camera, 90W HyperCharge, 50W wireless HyperCharge, and USB Type-C charging.

GSMArena adds a second price point for the 512GB 12GB RAM version at $819.00, while Xiaomi's spec page says the phone ships with Xiaomi HyperOS 2 and support for Wi-Fi 7, Bluetooth 6.0, and NFC.

What Fits The Model

The Xiaomi 15 sits in the upper smartphone tier with a 5,240mAh battery, flagship chipset, and a 6.36-inch display, while the 256GB storage tier keeps the build centered on local storage rather than expansion. For readers comparing capacities, the 256GB model is the middle storage step in the lineup shown on Xiaomi's global specs page.

The model suits buyers who want a smaller Android flagship with fast charging and a 6.36-inch screen, not a foldable or a large-screen phone. GSMArena's listing places the 256GB 12GB RAM version above the 512GB 12GB RAM price point, which makes the storage ladder easy to compare.

Direct from the Manufacturer

Xiaomi 15 Specs

Xiaomi's global specs page lists the model's storage, display, camera, battery, and connectivity details.

View Xiaomi 15 Specs

Bottom Line On The 256GB Model

Xiaomi 15 256GB is the storage tier to watch if the goal is a 6.36-inch flagship with 12GB RAM, a 5,240mAh battery, and 90W wired charging. The mix of size and hardware leaves it aimed at users who want top-end parts without moving up to a larger phone body.