Fingerprint reader in Xiaomi – on the screen or on the side?
Biometric security is today one of the basic elements of everyday use of a Xiaomi smartphone. It is responsible for quick phone unlocking, payment confirmation, and protecting access to applications and data. Xiaomi uses two main solutions. The first is placed directly in the display, the second is integrated into the power button on the side of the device. Both are based on fingerprint analysis, but they differ in operating technology, ergonomics, and resistance to usage conditions.
How the in-display fingerprint reader works
The in-display solution is found mainly in Xiaomi smartphones with an AMOLED display. It operates using optical technology that scans the finger by illuminating a section of the screen. The advantage of this approach is a modern look and the absence of additional elements on the housing. In practice, however, effectiveness depends on several factors, such as finger cleanliness, the condition of the protective glass, and the quality of the panel. With a damp hand or thick screen protector, the response may be slower.
Solution integrated with the side button
The variant placed on the side of a Xiaomi phone combines the power button function with fingerprint recognition. This solution is valued primarily for its speed and predictability of operation. The phone often unlocks the moment you pick it up, without the need to aim at a specific point on the screen. The side-mounted version is also less sensitive to dirt, moisture, and additional protective accessories, which translates into high reliability.
Which option to choose? – The most important differences
Choosing the right solution mainly depends on how you use your phone and your personal preferences. The most important differences can be summarized in a few points:
• The in-display version offers a modern look and a uniform front design
• The side-mounted variant works faster and is more reliable
• The in-display solution requires an AMOLED panel
• The side-mounted variant works better with cases and screen protectors
• The in-display reader appears more often in more expensive Xiaomi smartphones
The in-display variant can be found in models focused on modern design and higher specifications, such as Xiaomi 15 Ultra, POCO F7, or selected versions of the Redmi Note 15 series. The solution integrated with the side button, on the other hand, often appears in more universal and affordable models such as Redmi 15 and some variants of the Redmi Note 14, where speed and ease of use are the priority.
This comparison shows that there is no single universal choice. Each option has its specific use cases and works better under different usage conditions.
Security and reliability in everyday use
In terms of security, both solutions offer a comparable level of protection. Biometric data is stored locally in a secure system area and is not transmitted to the cloud. Differences are visible, however, in operational reliability. The side-mounted variant copes better in challenging conditions such as moisture or low temperatures. The in-display solution remains secure, but is more susceptible to external factors and the quality of used accessories.
Which option to choose in Xiaomi phones
If speed, convenience, and effortless one-handed operation are the priority, the variant integrated with the side button will be the better choice. It works especially well in intensive, everyday use. The solution placed in the display, on the other hand, is an option for people who value a modern look, a large screen, and a cohesive device design. The choice is therefore best treated as a conscious way of matching a Xiaomi phone to your own habits.
