The iLOQ S50 app for Android or Huawei works in most NFC-enabled Android phones or Huawei phones running the Android OS. However, considering the great variety of form factors and designs in different phone models affecting NFC performance, it is not guaranteed that the app works seamlessly in all NFC-enabled Android or Huawei phones. Therefore, it is recommended to test the application on your phone before taking it into full use.

Before installing the app, make sure that:

1. Your phone is NFC compatible.
   1. NFC is required for lock opening. The app cannot be installed from Google Play on phones that do not support NFC. 
2. You know where the NFC antenna is in your phone
   1. This application uses the wireless energy harvesting capability of NFC technology for lock opening. To ensure smooth and efficient energy flow between the phone and lock during opening, the NFC antenna on the phone must be placed accurately against the lock’s antenna knob. The NFC antenna may be in different places depending on the phone model. To check the location of the NFC antenna, refer to your phone’s operating instructions or contact the manufacturer. Please keep in mind that NFC performance may be affected if your phone has a cover.
3. Your phone is not rooted.
   1. Rooting exposes devices to security threats. The iLOQ S50 app cannot be installed and used in rooted devices.
4. Your phone operating system is running the latest available version.
   1. This is to ensure your phone is protected by the latest security patches. For security reasons, it is important to always keep the operating system updated to the latest version. 

The iLOQ S50 app is free to install from Google Play or Huawei AppGallery. Note: you must have a Google account on your device to install apps from Google Play or a Huawei account on your device to install apps from AppGallery. After installation, the app must be registered as a key to a locking system before it can be used.