If the battery does degrade to the point of needing to be replaced, there is a message in the battery settings page: http://media.idownloadblog.com/wp-content/u

If the battery does degrade to the point of needing to be replaced, there is a message in the battery settings page: http://media.idownloadblog.com/wp-content/uploads/2017/12/iPhone-battery-servicing-warning.jpg http://media.idownloadblog.com/wp-content/uploads/2017/12/iP...