Here is how you to measure it:
Settings
Battery
Second column (up to 10 days one)
Total usage in 24 hrs = X = Display on plus Display off usage
Total battery used in percentage = Y
Battery Life = X / Y * 100
If you average out for multiple days it will be more accurate.
Report in the below format:
Device:
Mostly WiFi Battery:
Mostly 4G Battery:
Mixed Battery:
Battery Health:
1. Device: iPhone X
Mostly WiFi Battery: 9-10+ hrs
Mostly 4G Battery: 6-7 hrs
Mixed Battery: 7-8 hrs
Battery Health: 99%
2. Device: iPhone 7
Mostly WiFi Battery: Don’t know
Mostly 4G Battery: 3.5 hrs to 5 hrs
Mixed Battery: Don’t know
Battery Health: 87%
3. Device: iPhone SE
Mostly WiFi Battery: Don’t know
Mostly 4G Battery: 3 to 4.5 hrs
Mixed Battery: Don’t know
Battery Health: 94%
Settings
Battery
Second column (up to 10 days one)
Total usage in 24 hrs = X = Display on plus Display off usage
Total battery used in percentage = Y
Battery Life = X / Y * 100
If you average out for multiple days it will be more accurate.
Report in the below format:
Device:
Mostly WiFi Battery:
Mostly 4G Battery:
Mixed Battery:
Battery Health:
1. Device: iPhone X
Mostly WiFi Battery: 9-10+ hrs
Mostly 4G Battery: 6-7 hrs
Mixed Battery: 7-8 hrs
Battery Health: 99%
2. Device: iPhone 7
Mostly WiFi Battery: Don’t know
Mostly 4G Battery: 3.5 hrs to 5 hrs
Mixed Battery: Don’t know
Battery Health: 87%
3. Device: iPhone SE
Mostly WiFi Battery: Don’t know
Mostly 4G Battery: 3 to 4.5 hrs
Mixed Battery: Don’t know
Battery Health: 94%