A Galaxy S24 Ultra that runs hot is usually running a lot of work for its age, not failing. The 2024 phone has a Snapdragon 8 Gen 3 on a 4 nm process and a battery now two and a half years old, and owners on Samsung's forums tied heat to two updates: One UI 7, after which charging, video calls and camera recording tripped the overheating warning, and the July 2026 security patch, which also hit S25 Ultras. Open Settings, Battery first. Then choose the Light performance profile in Device care for a week and see whether the heat follows the workload.
Differential
Likely causes of “Samsung Galaxy S24 family gets hot or shows a temperature warning”, and how to tell them apart
- 1
One UI 7 running hotter on camera, calls and charging
What separates it The overheating warning appears during video recording or a video call, and the phone gets hot while charging
How to confirm Forum owners reported exactly these after One UI 7; switching Device care to the Light performance profile and clearing One UI Home's cache gave some of them relief
- 2
The July 2026 security update
What separates it Heat and drain that began at the end of July and show one app at the top of Settings, Battery
How to confirm 9to5Google reported S24 and S25 Ultra owners with stuck background work after the patch; a WhatsApp backup loop was one named cause
- 3
A battery now 2.5 years old
What separates it The phone charges to 100 percent but the heat and the drain both rose over the past year
How to confirm A worn 5000 mAh cell sheds more heat under the same load; Samsung Members battery diagnostics shows whether the cell has aged
- 4
Wireless charging at 15W
What separates it It is hotter on a pad than on a cable, especially in a case
How to confirm GSMArena lists 15W wireless charging for the S24 Ultra, slower than the 25W of the S25 Ultra, so the pad runs longer for the same charge
Before you touch a setting
Record this first — changing settings destroys the evidence
- Whether the heat began after One UI 7 or after the July 2026 update
- The exact warning text, and whether it appears while recording video
- Whether it is hot on a cable charger or only on a wireless pad
Try in this order
0 of 5 completedCool it and read the warning
ReversibleUnplug the charger, remove the case and leave the phone face up in the shade. Note the warning text before it disappears.
Switch to the Light profile
ReversibleOpen Device care, Performance profile and choose Light. It lowers peak speed and heat for a week of testing.
Clear One UI Home's cache
ReversibleOpen Settings, Apps, One UI Home, Storage and tap Clear cache. Forum owners used this after the One UI 7 update.
Check the top battery app
ReversibleOpen Settings, Battery. Stop or update the app in first place, and allow a WhatsApp backup to finish on Wi-Fi.
Test a cable against the pad
ReversibleCharge for a day on the wired charger with the case off. If the heat disappears, the 15W wireless pad was the source.
Model-specific
What is true of this model and not of its siblings
- Charging
- 45W wired (65 percent in 30 minutes), 15W wireless and 4.5W reverse wireless on a 5000 mAh battery.
Stop boundary
When this stops being a self-service repair
- !If the warning appears with no camera, game or charger in use, run the Samsung Members diagnostics and contact Samsung support
- !If the battery test reports a fault, ask Samsung for a battery replacement quote
- !If the back bulges or the phone smells scorched, stop using it and visit a service center the same day
Evidence ledger
Sources behind this answer
The temperature range and the cooling messages.
Owners describing heat while charging and on video calls after One UI 7.
Reports of drain and heat on S24 and S25 Ultras after the July 2026 update and the suspected WhatsApp backup cause, published 2026-07-30.
Snapdragon 8 Gen 3 (4 nm), titanium frame, 5000 mAh, 45W wired and 15W wireless charging.
Exact questions
Common questions
Did One UI 7 make the S24 Ultra hotter?+
Owners on Samsung's US and EU forums reported heat while charging, on video calls and on camera recording after One UI 7, and some were told the behavior was known.
Does the S24 Ultra have the Exynos chip?+
No. GSMArena lists a Snapdragon 8 Gen 3 (4 nm), and Samsung sold the Ultra with the Snapdragon in every region; the Exynos 2400 question applies only to the S24 and S24+.
Will a new battery stop the heat?+
If Samsung Members diagnostics flags the cell, yes: an aged cell sheds more heat under the same load.