Hey guys.
I have 4 different Galaxy S4 GT-I9515 spread over my family in use (bought used 2 years before), all with LOS18.1 and quite recent builds (<2 months old) and also freshly flashed latest modem files.
4 people are fine with the battery performance (about 2 days from 100% to 10% with moderate usage) but one person reports about very low battery performance mostly less than 1 day (or even less than 12 hours, although I already bought an original new one) and also with very low usage . The user reports this behaviour only after enabling the usage of 4G for network carrier (after having just 3G enabled before, which providers in germany now switched off). I made some measurements with GSMBattery and some screenshots, see below. I did not become wiser with these results.
Maybe someone can say anything about it (or has values for comparison)? Did I miss any (expert) settings in LOS on this device? Just having bad 4G reception I would say should not be the reason, as 3 others devices "living" just 200m apart (with even worse reception) looks much better. Any comments or things I could check?
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image 1: with 2G and moderate active usage (~1h) 100%->60% within 12h
image 2: with 4G and nearly no usage (just lying around) 100%->30% within 9h
2G/3G:
4G:
some more screenshots for 2G:
some more screenshots for 4G (I can't see problematic values - you?):