iPhone 6S Plus battery, one-year warranty

Description of the battery for iPhone 6SP device. Battery warranty one year (12 months). At Reesan Store. It is recommended to install and change the battery by a specialized person for your safety. It shows the battery charge level, but the battery health percentage in settings does not appear, but the battery works 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.