Heat on a Galaxy S22+ has a long history, because the S22 series launched with a Snapdragon 8 Gen 1 or an Exynos 2200 that ran warm, and owners today describe the same heat returning after One UI 8. One S22 Ultra thread, titled for overheating after the first One UI 8 security update, describes it alongside camera and battery trouble, and an S22 owner wrote to Samsung asking for official guidance on overheating, battery drain and app crashing after an OTA update.
That combination points at an update that is still settling more than at hardware. The advice that fits is Samsung's own: stop heavy use, take the case off, keep the phone out of the sun, and let the phone finish its post-update work before judging it. If it stays hot at rest in Safe mode, the cell or the board needs a look.
Differential
Likely causes of “Samsung Galaxy S22+ gets hot or shows a temperature warning”, and how to tell them apart
- 1
An update still settling
What separates it Heat and drain in the first days to two weeks after One UI 8
How to confirm Install the newest patch, restart and wait up to fourteen days
- 2
An older chip under load
What separates it Gaming or video calls heat the phone quickly
How to confirm Rest the phone; lower brightness and game settings
- 3
A case that traps heat
What separates it The back stays warm after use
How to confirm Take the case off for a day and compare
- 4
A background app in a loop
What separates it Heat at rest with the screen off
How to confirm Run Safe mode and remove recent apps one at a time
- 5
An aging battery
What separates it Heat while charging with a short runtime
How to confirm Samsung Members, Phone diagnostics, Battery status
- 6
The Exynos or Snapdragon chip of a 2022 phone
What separates it Heat during gaming and video calls even in a cool room
How to confirm Lower graphics settings and take breaks; the chip throttles itself by design
Before you touch a setting
Record this first — changing settings destroys the evidence
- The date of the One UI 8 update and any later patch
- Whether the heat is during use, charging or at rest
- The top app in Battery usage
- The case in use
Try in this order
0 of 6 completedCool the phone
ReversibleClose apps, take the case off and rest the phone in the shade.
Install the newest patch
ReversibleSettings, Software update.
Find the app responsible
ReversibleSettings, Battery, Battery usage.
Charge cooler
ReversibleUse Samsung's adapter, idle, on a hard surface.
Test in Safe mode
ReversibleHold the power key, Power off, Safe mode.
Check the battery
ReversibleSamsung Members, Phone diagnostics.
Model-specific
What is true of this model and not of its siblings
- A pattern across the S22 series
- Heat, drain and app crashes reported together after an update suggest one cause, which fits an update that is still settling.
- The S22+ hardware
- A 6.6-inch phone with a 4,500 mAh battery and 45 W charging.
- What the S22 series is known for
- The S22 launched in 2022 with chips that ran warm under load, so heat on a four-year-old S22+ is partly history and partly the update that owners describe; both are manageable by lowering the load and installing the newest patch.
- A test that separates update from hardware
- Run the phone in Safe mode for an hour with nothing else open. If it is cool there, an app or the update's settling is the cause; if it is warm even in Safe mode, the battery or the board is the likelier cause.
Stop boundary
When this stops being a self-service repair
- !If the S22+ is hot at rest in Safe mode, send a Samsung Members error report and book a check
- !If heat comes only while charging with a new cable and charger, ask Samsung to test the battery
- !A swollen case or a burning smell means service now
Evidence ledger
Sources behind this answer
Samsung's overheating guidance.
An S22 owner describing heat, drain and crashing after an update.
S22 owners reporting heat after the first One UI 8 security update.
Per-model battery, charging, chip and display for the S22, S22+ and S22 Ultra.
Exact questions
Common questions
Why is my Galaxy S22+ hot after One UI 8?+
Owners of the S22 series report heat after the first security update; the update is still settling, and the newest patch is the first fix.
Is the S22+ prone to heat?+
The S22 series has run warm since launch, and an aging battery adds to it.
Should I factory reset?+
Not before the patch, Safe mode and a fourteen-day wait.
When is heat a fault?+
Hot at rest in Safe mode, or a swelling back.
Why does my four-year-old S22+ get hot while charging?+
An aging battery and 45 W charging both add heat; use Samsung's adapter, charge idle and without a case.
Is the S22+ overheating a software or hardware problem?+
Owners report it after One UI 8, which points at software, but an aging battery can add to it.