If your phone suddenly started overheating after a system update, there’s a hard truth you need to hear: in most cases, the update itself is not the real problem. The real culprits are apps that fail to adapt properly to the new system. AvNexo users across London, Manchester, Birmingham, Leeds, and Sheffield report the same pattern every time — the update finishes, the phone heats up, and one or two badly behaving apps are quietly burning the CPU in the background.
This article breaks down which types of apps cause overheating after updates, why they do it, and how UK-specific usage (networks, cities, and habits) makes the problem worse.
System updates change how background tasks, permissions, and power management work. Well-maintained apps adapt quickly. Poorly maintained apps don’t — and they respond by:
The result is constant CPU usage, radio activity, and heat — even when your phone looks idle.
Social media apps are the number one cause of post-update overheating in the UK.
Common issues include:
AvNexo users in London noticed overheating even with the screen off, traced back to social apps repeatedly syncing on unstable 5G connections.
Why updates make it worse: Permission models change, but the app keeps retrying old behaviour.
Apps that rely heavily on GPS are notorious after updates.
After updates, these apps may fail to sleep properly, keeping GPS, sensors, and mobile data active.
Users in Birmingham and Leeds report phones heating up even indoors because location services never fully shut down.
Messaging apps that perform cloud backups often go out of control after system changes.
AvNexo data shows these apps can spike CPU usage for hours without showing anything on screen.
These apps often trigger overheating within the first 48 hours after an update.
Why?
In cities like Manchester and Nottingham, users reported phones heating overnight while plugged in — a classic sign of background cloud syncing gone wrong.
This is where people get fooled.
Apps that claim to save battery or clean memory frequently:
After updates, these apps often cause more heat than they prevent.
Blunt advice: If you use one of these apps, uninstall it.
VPN apps are especially problematic after updates.
Common post-update issues:
UK users on Vodafone and Three reported severe overheating when VPNs struggled to adapt to updated network stacks.
Overheating isn’t just about apps — it’s about how apps interact with networks.
Apps that constantly retry network tasks generate heat much faster on UK networks than on stable Wi-Fi.
Settings → Battery → Battery usage
Look for:
Safe Mode disables third-party apps.
If overheating stops in Safe Mode, the problem is confirmed: an app, not the update.
Uninstall recently updated or rarely used apps first. AvNexo users often find the culprit within two removals.
These actions either waste time or make the problem worse.
If an app:
It should be removed immediately — even if it’s popular.
Apps don’t just contribute to overheating after updates — they are usually the primary cause. System updates expose lazy coding, outdated background behaviour, and aggressive syncing strategies.
UK users who identify and remove one problematic app often see temperatures drop within hours. The update didn’t break your phone — it revealed which apps never deserved to run unchecked in the first place.
Meta description: Phone overheating after an update? Learn which apps cause heat, why UK networks make it worse, and how to identify the real culprit fast.
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