Xperia 5 battery life and double SIM cards

[laschg]

My Xperia 5 had a good battery life, typically lost (3-)4 % battery charge overnight. Then I installed double SIM cards, which works very fine, I don't have to carry both my private phone and my job phone around. But now the battery charge goes down 20-30% overnight and even faster in the day when I of course use the phone. 

I've got it updated. I've tried to clean the cache for a lot of apps. Now I have restarted the phone in safe mode to see if it can make any difference (so far 4% in 3 hours) so I suspect that won't make a big difference. 

I hope to avoid to try a factory reset, anyone having a suggestion for something smart to do before I do the reset? 

[Gilgameshuk]

Try looking at your battery app through the day and see what applications are draining your batter.

Uninstall the ones that are doing it, also turn off Always on screen and live wallpapers.

[najodleglejszy]

hi @laschg, is it possible that you had your mobile data disabled when using a single SIM card, and now you've enabled it on one of the cards? that could possibly increase the battery drain.

going to Settings > Battery to check what apps are using the most power like @Gilgameshuk has said is also a good idea.

[laschg]

Thanks for your replies! 

I haven't changed the mobile data settings. One of the SIM cards (the same as before) has mobile data enabled.
I don't know how to interpret the information about battery. 14 apps has used 1-3% of the power each, 16% in total. The battery level is 43% so 57% of the total charge is drained. The 41% of battery drain the apps didn't cause must have been due to something else. The screen? I've seen similar figures before, also on other phones. No single app seems to have been responsible.