Phone jumping from 70% to 10 To 40 whilst randomly shutting down
Here’s a screenshot, got this iphone 15 new when it came out, it is randomly shutting down and jumping around battery wise as you can see there it also looses battery whilst charging. 20% was lost today in around 5 minutes then i put it on charge from flat and it is instantly 30. What is going on, has anyone fixed this?