Xperia XA2 battery drop faster after upgrade last week

[xperia_keith]

Dear Support,

Before upgrade last week, the battery can last for one and an half day; while after upgrade, the phone only last 20 hours and already enabled stamina mode.

And idea to fix it ?

BR,
Keith

[annoimush]

20 hours is incredibly fast!

I am still getting 5 days out of 1 charge on my XA2 - what is using all your battery? (settings -> battery -> advanced)

[Jztezn]

My charge only last 4 hours on standby and the phones only two day old and it

keeps turning it self off