iPhone 8G battery, one-year warranty

Battery description for iPhone 8G device, battery warranty one year (12 months), at Rezan Store. It is recommended to install and replace the battery by a specialist for your safety. It shows the battery charge level, but the battery health percentage in the settings does not appear, but the battery works correctly and the absence of the battery level percentage is due to a 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.