iPhone 8 Plus battery, one-year warranty

Battery description for iPhone 8P 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 does not appear in the settings, although the battery functions correctly and the battery level percentage does not appear due to a system from the device manufacturer. (A message appears on modern devices after changing the battery indicating that the device cannot verify the battery). Ignore this message and use the battery, and do not worry.