A large number of Xiaomi, Redmi and Poco users began to face an annoying problem that prevents them from using their smartphone on a daily basis.
We are talking about glued protective glasses that interfere with the operation of fingerprint scanners under the screen in the corresponding Xiaomi, Redmi and Poco models.
The growing prevalence of this problem leads to the fact that Xiaomi, Redmi and Poco owners cannot add new fingerprints or unlock their devices using a fingerprint scanner, which causes huge inconvenience when using a smartphone.
While Xiaomi is pushing the boundaries with innovative technologies for its smartphones, users should be clearly aware of the possible problems that accessories can create, which may ultimately affect the functionality of the device.
Various posts on Reddit and other thematic sites indicate that this applies to many Xiaomi devices. Some have found that pressing very hard on the screen with certain protective glasses or films does help after a while, but this solution is far from ideal for everyday use.
Fingerprint sensors under the screen use ultrasound or light technology to scan your personal fingerprint. When you place the safety glass on the screen, it can interfere with this high-end reading technology if:
- The glass is too thick. The protective coating is not specifically designed for devices with a fingerprint sensor under the screen.
- The adhesive leaves an air space or gap between the screen and the protective film.
- The glass material causes the sensor to malfunction when reading the fingerprint.
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What should Xiaomi users do?
The problem is not with your Xiaomi’s sensor, but with the compatibility of the protective film with the sensor. Here are the best solutions:
1. Choose a compatible tempered glass
If you prefer the premium look and durability of tempered glass, consider looking for models that are designed for under-screen fingerprint scanners. They usually have:
- Slim design
- Special cutouts in the sensor area
- Increased transparency around the fingerprint reading area
Before buying, it is advisable to check customer reviews to make sure that the protector is compatible with your specific Xiaomi model. Despite the manufacturers’ claims about compatibility, the actual performance may vary.
2. Use high-quality protective films
For the best use of the fingerprint scanner, high-quality plastic protective films provide an optimal balance of functionality and protection. Like the pre-installed protective films that come with many new Xiaomi, they are:
- Provide sufficient protection from scratches
- They do not have false touches to the fingerprint sensor
- Maintain the sensitivity and responsiveness of the display
Although high-quality protective films do not provide the same level of impact resistance as tempered glass, they can provide almost identical tactile sensations while ensuring the smooth operation of biometric security features.