Although the iPhone provides an excellent battery, it will drain in time with the wear and tear as the user uses it. And they may face some issues with the phone’s battery. The possible battery issues of iPhone 8 plus which a user may face are:
Charge Drain: Sometimes the battery of the iPhone 8 plus drains faster than it should. Or sometimes the battery drains drastically in standby mode. This is a common issue reported by users after some period of prolonged usage.
Sudden Shutdown of Phone when battery percentage reaches 20: Some users report that their phone dies suddenly when the battery reaches 20%. This might be because your battery is old and swollen and need to be replaced.
Battery Health Reduces Quickly: A common issue of Battery problems regarding iPhone 8 plus is that the general Battery Health reduces too quickly.
Increase of Battery Thickness: The iPhone 8 plus battery gets swollen/ increases in thickness after using it for an extended period of time. When a battery gets swollen, it runs the risk of damaging the phone. It should be replaced immediately because it is also a sign that the battery has run its course.