iPhone X battery, one-year warranty

Battery description for iPhone X device, battery warranty one year (12 months), at Risan store. It is recommended to install and change the battery by a specialist for your safety. It shows the battery charge level, but the battery health percentage in settings does not appear, although the battery functions correctly and the absence of the battery level percentage is due to the system from the device manufacturer. (A message appears on modern devices after changing the battery stating that the device cannot verify the battery). Ignore this message and use the battery, and do not worry.