Redmi 15 hands-on: leading the mainstream segment with 7000mAh battery and 144Hz display

With the combination of large battery capacity, silicon-carbon technology and high refresh rate screen, Redmi 15 brings a different experience compared to many competitors in the same price range.

In the popular smartphone segment, the configuration usually stops at 5000mAh battery capacity and 60Hz screen, Redmi 15 brings a significant difference. With a price of less than 5 million VND, the device is equipped with a 7000mAh silicon-carbon battery - a technology that appears in high-end lines - along with a 6.9-inch screen with a 144Hz refresh rate. This combination makes the device one of the rare choices in the segment, creating a different user experience.

Design: slim, modern and sophisticated on Redmi 15

Redmi 15 is finished with a thickness of 8.4mm and a weight of 214g, creating a rare balance in a product with a large capacity battery. The edges are softly curved, the buttons are neatly arranged for convenient operation. The fake metal back creates a solid feeling, while the camera cluster is compactly designed, less protruding from the surface, limiting entanglement when placing the device on the table or in the pocket.

The accessory set includes a 33W charger, USB-C cable and case, fully meeting basic needs right from the start when owning Redmi 15.

PHOTO: REVELATION

In terms of display, Redmi 15 is equipped with a 6.9-inch DotDisplay with FHD+ resolution for clear details. The 144Hz refresh rate makes swiping smooth, reducing ghosting when scrolling pages or playing games. With a size close to a phablet, the display space is large enough for basic work, online learning and watching movies.

Close-up of Redmi 15 design

PHOTO: REVELATION

The maximum brightness of 850 nits is enough to display well in outdoor light. In addition, the TÜV Rheinland certification for low blue light and anti-flicker helps reduce eye strain during long-term use. The selfie camera is a compact, centrally-placed punch-hole, which does not significantly hinder the full-screen experience.

Performance: stable with long battery life

Redmi 15 comes with HyperOS 2 operating system, adding many AI features such as AI Erase, AI Sky, Dynamic Shots or Circle to Search. These tools help edit images quickly and intuitively, while bringing the experience closer to high-end devices. The ability to integrate Google Gemini also expands many utilities for users in work and study.

In terms of CPU, this device uses Snapdragon 685, a mid-range processor that provides stable performance. Popular applications and light online games run smoothly. In the test with Free Fire, the frame rate remained at nearly 60 FPS, providing a stable experience.

Using Xiaomi HyperOS 2 and stable hardware, Redmi 15 meets many needs from entertainment to content storage

PHOTO: REVELATION

Redmi 15 is one of the few mainstream smartphones equipped with silicon-carbon battery technology. The 7000mAh battery helps the device maintain an average of two days of use, surpassing the popular 5000mAh level in the segment. Notably, the battery management system provides three different usage modes, from performance-battery balance to maximum savings. In the highest savings mode, the device can reach more than 100 hours of operation on a full charge, suitable for situations that require maintaining basic connectivity for a long time.

Redmi 15 battery information and reverse charging capability

PHOTO: REVELATION

One point worth mentioning is the 33W fast charging support feature, and can also charge 18W for other devices. In actual testing when charging another device, the power fluctuates from 12-15W. Redmi's full charge time is also displayed for users to easily recognize.

Finally, the 50MP camera on the Redmi 15 takes sharp photos in good lighting conditions. The device also supports IP64 water resistance and Wet Touch 2.0 technology, ensuring smooth operation even when the screen or hands are wet.

Overview

Redmi 15 offers a rare combination in the entry-level segment with a durable 7000mAh silicon-carbon battery, a large, smooth 144Hz display, and IP64 water resistance. The Snapdragon 685's performance, although only stable, cannot be compared to higher mid-range models, but is still enough to handle daily tasks and popular games well.

With these factors, Redmi 15 stands out in the smartphone group under 5 million VND, targeting users who need a durable device, long battery life and the ability to flexibly meet many daily usage needs.

Source: https://thanhnien.vn/trai-nghiem-redmi-15-dan-dau-phan-khuc-pho-thong-voi-pin-7000mah-va-man-hinh-144hz-185250828004641338.htm