Poor battery performance iPhone 8
My iPhone 8 is not holding charge very well. Sometimes the drop in battery power is sudden and significant.
Will a new battery fix that?
iPhone 8
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Settings > Battery > Battery Health > Maximum Capacity > If Below 80%, time for new battery. But take your iPhone 8 to Apple Store, or Authorized Apple Service Provider to have it checked out. Technicians can find out what's going with your iPhone.