Why Galaxy phones heat up during updates
When Samsung rolls out a new version of Android – for example the recent Android 15 rollout for the Galaxy S24 series – the device has to unpack and install a large amount of code. The processor works at full tilt, the storage subsystem is busy writing data, and the radio modules stay active to download the package. All of this generates heat, and it’s not unusual for the phone’s surface temperature to climb a few degrees above its idle level.
The heat is generally harmless; modern smartphones are built with thermal throttling and protective firmware that keep temperatures within safe limits. Nevertheless, a growing number of owners have taken matters into their own hands, sharing videos on TikTok, Reddit and YouTube that showcase inventive – and sometimes absurd – cooling methods.
The most talked‑about DIY cooling tricks
1. Air‑conditioner blast
One of the simplest ideas is to sit the phone on a tray of ice‑cold air coming from a home air‑conditioner. Users place the device on a flat surface directly under the vent while the update runs. The theory is that the cooler ambient temperature will draw heat away faster, keeping the phone’s skin cooler.
2. Plastic‑bag‑in‑water stunt
A more extreme version involves sealing the phone in a zip‑lock bag, then submerging the bag in a bowl of water. The water acts as a heat sink, and the sealed bag prevents any liquid from reaching the hardware. The videos are undeniably entertaining, but the risk of condensation forming inside the bag – especially if the water is warm – is real.
3. Wireless chargers with built‑in fans
A handful of newer wireless charging pads now incorporate small fans that blow air across the device while it charges. Some owners have repurposed these pads during updates, hoping the airflow will offset the extra heat generated by the software install.
4. DIY ice‑pack cradle
A few DIY enthusiasts have built a cradle using a small cooler box filled with ice packs. The phone sits on a raised platform inside the box, allowing cold air to circulate around it. This method is more controlled than the water‑bag trick but still requires careful monitoring to avoid frostbite on the device’s back.
Samsung’s official stance
Samsung’s support pages acknowledge that phones can feel warm during large updates, but they stress that this is normal behaviour. In a statement quoted by Droid Life, the company warned that “actively taking steps to minimise heat from the device during updates is not necessary” and that “operating the device outside of manufacturer guidelines could affect warranty status.”
The warning is not just legalese. Introducing moisture – whether from condensation inside a sealed bag or from accidental splashes – can damage internal components. Even if the phone survives the update, any subsequent failure linked to water exposure could be deemed user‑induced, potentially voiding the warranty.
Should UK users follow these trends?
For most Galaxy owners in the UK, the answer is no. The devices are engineered to handle the thermal load of a software upgrade, and the risk of overheating to the point of hardware failure is minimal. A practical approach is:
- Update in a cool room – A well‑ventilated living room or kitchen during summer can keep ambient temperature down.
- Remove the case – Thick cases can trap heat; taking it off during the install helps dissipation.
- Avoid heavy usage – Don’t stream video or play games while the update is installing.
- Charge on a low‑power charger or not at all – Charging adds extra heat; a modest 5 W charger or a battery‑saver mode is sufficient.
If you’re still concerned, a simple fan aimed at the phone’s back is a safe, low‑cost solution that won’t risk moisture ingress.
The broader picture: cooling tricks across Android brands
Samsung isn’t alone in seeing its users get creative. Owners of OnePlus, Pixel and Xiaomi devices have posted similar cooling hacks, especially when flashing custom ROMs that push the CPU harder than stock firmware. The trend highlights a common misconception: that any rise in temperature is a sign of imminent damage. In reality, modern SoCs are designed to operate at temperatures up to 45 °C (113 °F) without issue, throttling only when they approach higher thresholds.
Bottom line for contract‑deal hunters
If you’re shopping for a Galaxy phone on a UK contract, the update‑heat saga shouldn’t influence your decision. Samsung’s warranty covers manufacturing defects, and the company’s software update process is robust. Instead, focus on the features that matter for a deal – network compatibility, data allowances and the handset’s camera and battery performance. And if you do end up with a quirky cooling video on social media, remember it’s more entertainment than engineering advice.
This guide summarises the user‑generated cooling methods reported by Droid Life on 4 September 2026 and adds context for UK Android buyers. All technical details are based on publicly available Samsung documentation and independent testing reports.
