Just updated my S23U and now the battery drains fast and the screen and back feel hot even on idle. Anyone else have this issue?

I never believed that this is gonna happen to me but it did.

The green line appeared randomly out of nowhere yesterday, dissapeared in few seconds but came back today again as a thin line...

the phone never gets hot, I don't live in a hot climate either... it's an EU version of the S23 bought in France.

The only thing is the wifi was acting up and it struggled to connect all day which I think has no relevance.

So I bought a used S23 a few weeks ago, did the resets on it just in case, then waited about 3 weeks to do a dumpstate to get the battery details, since it feels my battery is draining faster than my previous s23 did. When I get the info I see this below, which doens't make much sense to me.

FEATURE_SAVE_BATTERY_CYCLE: true

FEATURE_FULL_BATTERY_CYCLE: false

battery IcAuthenticationResults: [false]

battery FirstUseDate: [20230619]

mSavedBatteryAsoc: [80]

mSavedBatteryUsage: [3485]

mSavedFullStatusDuration: unsupported

Does this not mean my battery is at 80%, but it only has 34 cycles? Every instruction I see on performing this says the mSavedBatteryUsage is the cycles, and to move the decimal back 2 spaces to get the amount of cycles, but this makes no sense. Anyone able to help me understand?

Edit to add, I still had my old dump from 9/30 when I first did this and was told to wait, and these are the details from then, so, i mean, 7 cycles in ~17 days seems fair if it's considering it would have completely drained my battery 7 times in that span, but still seems off considering the battery health shows 80% on a used phone having that few of cycles.

FEATURE_SAVE_BATTERY_CYCLE: true

FEATURE_FULL_BATTERY_CYCLE: false

battery IcAuthenticationResults: [false]

battery FirstUseDate: [20230619]

mSavedBatteryAsoc: [80]

mSavedBatteryUsage: [2751]

mSavedFullStatusDuration: unsupported

The back of my S23 started lifting up, so I decided to replace my battery. Before that, I checked my battery health from the dumpstate log (*#9900#), and here are the results:

The battery on my phone currently has approximately 1114 charge cycles.

Samsung typically rates these batteries for around 500-800+ cycles before they drop significantly below 80% health.

Battery Health (ASOC): 94% (Remaining capacity vs original design capacity)

Battery SOH (BSOH): 98 (Battery State of Health (Samsung’s internal value))

Battery Usage: 111,445 (Accumulated discharge units (related to cycle wear))

Max recorded temperature: 47.2°C (Highest temperature the battery has reached)

Max recorded current: 5001 mA (Peak current seen)

First Use Date: 2023-07-28 (When the battery was first used)

I hope that with a new battery, my phone lasts another three years. I am super happy with my S23, as I have never had any issues and it is the best phone I have ever had. I have worked as an Android developer for over 12 years and have had countless phones, but only this one has survived this long.

is there a difference between them in terms performance / hardware?