REDMI 15 review: Big screen, strong battery but lacks 5G connectivity

(Dan Tri) - Xiaomi REDMI 15 competes directly with a number of rivals in the same price segment such as OPPO A3, Samsung Galaxy A16, realme C75x or vivo Y19s Pro.

+ Advantages:

- Strong battery.

- Largest screen in segment.

- Affordable price.

+ Limitations:

- Average camera.

- Does not support 5G connection.

+ Editor's Advice:

REDMI 15 is suitable for those who want to upgrade from a regular phone to a smartphone, the elderly who need a large screen, easy-to-use device, or students looking for a cheap device with a long-lasting battery.

However, the camera limitations and lack of 5G connectivity will hardly satisfy demanding users or those who are used to experiencing products in the above segment.

Design and display

REDMI 15 has a soft curved design on all four sides, providing a comfortable grip experience. The back and frame are both finished in a matte finish, helping to limit fingerprints during use.

Similar to most smartphones in the popular segment, the entire frame and back of the REDMI 15 are made of plastic. However, the overall quality of this product is relatively good and sturdy, with no creaking when force is applied to the back or frame.

REDMI 15 is one of the few smartphones in the entry-level segment that supports IP64 water and dust resistance. Most other manufacturers will choose to cut down on water resistance to save production costs, especially for entry-level devices.

The device is equipped with a 6.9-inch LCD screen, the largest in the segment, Full HD + resolution with a punch-hole design containing the selfie camera. This screen has a wide viewing angle, soft colors, maximum brightness of 800 nits is not too high but enough to observe and use outdoors.

In addition, the device's screen is also TÜV Rheinland certified to reduce blue light, limiting eye strain when used for long periods of time.

The most notable plus point on this screen is the support for a 144Hz refresh rate, higher than the 60-90Hz of most competitors in the same segment. This equipment helps make swiping and touching smoother, especially when playing games or surfing the web.

However, the screen bezels on the top and bottom edges are still significantly thicker than the remaining edges. This makes the overall front design of the device unbalanced.

Performance and battery

REDMI 15 is equipped with Qualcomm Snapdragon 685 processor, optional RAM capacity of 6/8GB (supports expansion up to 6GB) and 128GB internal memory. Evaluated through Antutu Benchmark performance scoring software, REDMI 15 achieved more than 380,000 points.

A quick comparison with some competitors in the same segment, realme C75x using MediaTek Helio G81-Ultra processor scored 270,000 points, OPPO A3 with Snapdragon 6s Gen 1 chip scored about 240,000 points, Honor X7c using Snapdragon 685 chip scored about 320,000 points, while Samsung Galaxy A16 using MediaTek Helio G99 chip scored 390,000 points.

In real-life experience with some popular games such as PUBG Mobile or Lien Quan Mobile, the device can achieve 60fps with medium-high graphics settings. During continuous gaming for more than 2 hours, the device provides a stable user experience, with moderate heat output and no discomfort.

It should also be noted that this device will not be suitable for multitasking needs such as handling multiple applications at the same time or running heavy tasks such as playing graphics-intensive games or editing videos .

Currently, 5G technology is gradually becoming popular and has been brought to the popular segment by some smartphone manufacturers. It is quite unfortunate that REDMI 15 does not support 5G technology. Therefore, users cannot experience the latest mobile connectivity on this product line. However, this is a necessary cut to maintain an accessible price.

The most outstanding feature of REDMI 15 is the large capacity 7,000mAh battery. This battery capacity is 15-30% higher than most other competitors in the same segment.

Thanks to Silicon-Carbon battery technology, the device can still integrate a high-capacity battery while still ensuring a thin and light design. Xiaomi said the battery on the REDMI 15 has a battery life of up to 4 years, after 1,600 charging cycles, it still retains more than 80% of its capacity.

The device supports fast charging technology with a capacity of 33W. In addition, users can also use REDMI 15 as a backup battery source when this device allows reverse charging with a capacity of 18W.

With the actual need to use daily tasks such as calling, texting, browsing the web, watching videos, using social networks and playing games, the device can completely meet the usage time of 2 days.

Camera and other features

REDMI 15 is equipped with 2 cameras with a 50MP main lens and a secondary lens. In bright enough environmental conditions, the image quality taken from this camera system has good details, natural colors, suitable for everyday use.

Camera has never been the strength of smartphones in the popular segment and REDMI 15 is no exception.

The image quality captured from the camera system of the device is only enough for daily needs, similar to most other smartphones in the same segment.

In return, REDMI 15 is equipped with a number of AI features that allow users to quickly edit images or use the camera system more effectively. The AI ​​Circle to Search feature allows quick search by circling content on the screen, helping to improve work efficiency.

Summary

Xiaomi REDMI 15 is sold in the Vietnamese market at a price of 4.8 million VND for the 6GB RAM version and 5.2 million VND for the 8GB RAM version. For a more stable and smooth user experience, users should prioritize choosing the 8GB RAM version. With a difference of 400,000 VND, this will be a worthy upgrade.

The device competes directly with a number of rivals in the same price segment such as OPPO A3, Samsung Galaxy A16, realme C75x or vivo Y19s Pro.

REDMI 15 will be suitable for users who need to upgrade from a regular phone to a smartphone, older people looking for a large-screen smartphone, or students who need a cheap phone with good battery life.

Of course, other aspects like camera quality or lack of 5G connectivity will not satisfy demanding users or customers who are used to using products in higher price segments. These are necessary cuts to achieve an accessible price.

Source: https://dantri.com.vn/cong-nghe/danh-gia-redmi-15-man-hinh-lon-pin-khoe-nhung-thieu-ket-noi-5g-20250904114233749.htm