I have the Samsung S21 5G which I bought 2.5 years ago. Recently it has become unusable. I charge it to 100% and in a matter of minutes it comes down 50%. For an example my phone was on 85% the day before, I put it in my pocket for about 10-30 seconds and boom, went down to 40% and then 27% in a matter of seconds. Could this only be a battery problem, because this is getting extreme!? I ordered the S22+ but its not even on the way yet…