I have got an iPhone 7 with battery health of 100%.
For my surprise, the battery drained 20% of the charge when I kept it idle for just 2 hours. And when I use the phone the battery backup is not good either. Currently running on iOS 14.3. Low power mode doesn’t help either.. GPS is off.. background refresh is also turned off. Siri is also off.. literally everything is turned off but the battery backup is worst. Help me!