iPhone X Awful stand by battery life

1050792

macrumors Demi-God
Original poster
Oct 2, 2016
2,515
3,989
Hey all,

So I left my XS Max at 84% with the screen off, came back after 35 minutes and it’s at 80%? The same has been happening with my X but since the battery health pointed at 95% I thought it was something related to that but guess not. What’s up with awful stand by drain? No Apps have been consuming energy with the screen off.
 

mmomega

macrumors 68040
Dec 30, 2009
3,553
1,718
DFW, TX
I travel quite a bit and anytime I go to a different state or country with less cellular signal than I normally have at home, I can definitely tell a difference in battery life.
 

sumo.do

macrumors regular
Mar 12, 2014
155
32
Australia
Hey all,

So I left my XS Max at 84% with the screen off, came back after 35 minutes and it’s at 80%? The same has been happening with my X but since the battery health pointed at 95% I thought it was something related to that but guess not. What’s up with awful stand by drain? No Apps have been consuming energy with the screen off.
I think it’s ios 12. We’ve got a few ‘older’ iPhones in our house that are running markedly different with battery life on 12. I hardly dipped below 50% with a standard day’s activities. I go below 20% now.
 

1050792

macrumors Demi-God
Original poster
Oct 2, 2016
2,515
3,989
It seems to be cell signal related, with AirPlane mode I lost 1% only so now I'm not sure how to fix this because I rely on cell connection.
 
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