Is this software or hardware problem?

[Anonymous]

After July security patch, my phone drains battery around 30-40% during night. But, only if battery is below 50%. My battery health is 90% according to AccuBattery, and I don't think is battery problem. Airplane Mode is on, Power Saving is on, no apps in background, even phone totally off it drains battery!

I don't understand this, my phone were OK before 4 days. I think there are 2 problems: first, I started playing games with high fps before 3 days. Second, the AC  (Cold) can make the phone to drain battery fast. 

Any solution? At least not to drain 30%!

[Lekshmanan]

If You Are In Critical Poor Network Area , Charge Is Draining Too Much , Make Sure You Turned Off Data , Location , Bluetooth . Extended Usages In Cold May Reduce Your Battery Performance . It Will Recover When It Warms Up Again.

[Anonymous]

Yes, I turn on AC during night, because it's very hot in my country😂😂 when I wake up, my phone is colder than fridge🤣🤣🤣

[AlenSony소니알렌]

Background Apps Don't take battery
Bro 😊

Putting apps to sleep is for saving ram not battery

[AlenSony소니알렌]

How many years you used ?

My A52 is on 96% health
6 year old j5 in 70%
And Tab A In 76% but getting full one day battery

[Anonymous]

1 year 1 month old, bought in July 6th, 2020

[AlenSony소니알렌]

But battery health decrease in one year but
Still have better battery

Have you tried a factory reset

[Anonymous]

I have a lot of data, especially Minecraft worlds🤣🤣 2 times they lost after reset, lucky, found them back on Google Drive🤣🤣🤣🤣🤣

[AlenSony소니알렌]

Woops
Backup is a weakness of me tooo 😅

[Anonymous]

Do you remember that S8? Yesterday it gone in Italy with my friend together but it had 68% health🤣🤣🤣 totally 1600-2000mAh🤣🤣🤣🤣🤣