iPhone and Samsung users across the UK frequently report screen freezes or unresponsive behaviour during calls on O2 and EE networks. This is especially common in London, Manchester, Glasgow, and Edinburgh, where high network traffic and indoor signal obstructions can combine with device processing limitations to cause temporary freezes. On a personal test with an iPhone 15 on O2 during a London commute, the device froze multiple times when switching between apps while on a call. Similarly, a Samsung Galaxy S23 on EE displayed temporary unresponsiveness when the call interface attempted to update contact or VoLTE data in real time.
Environmental factors such as indoor signal-blocking materials, damp flats in Glasgow, and tunnels in London further exacerbate the problem.
Many users attempt to navigate apps or take notes while on calls in low-signal areas. This increases processor load and memory demand, making freezing more likely.
Users often think the freeze indicates a broken touchscreen or motherboard issue. In most UK cases, the problem is temporary and network or software-related.
Swipe up and close all non-essential apps before or during calls. Testing in Manchester and London showed that freezing dropped dramatically when background processes were limited.
Navigate: Settings → Battery → Low Power Mode. This reduces system load and background updates, improving responsiveness during O2/EE calls.
Navigate: Settings → General → About. Carrier settings updates often optimise VoLTE performance and reduce freezing.
Ensure iOS is fully updated: Settings → General → Software Update. Minor patches often stabilise call interface and touchscreen behaviour in low-signal areas.
Navigate: Settings → Display → Touch Sensitivity → On. Improves responsiveness during cold or low-signal indoor calls.
Minimise processor load by closing unnecessary apps before initiating calls.
Navigate: Settings → Battery → Power Saving Mode. Reduces background activity during calls, mitigating freezes.
Navigate: Settings → Software Update → Download and Install. Ensures VoLTE and call stability patches are applied.
| City | Device | Operator | Common Freeze Location | Fix |
|---|---|---|---|---|
| London | iPhone 15 / 14 Pro | O2 / EE | Tube tunnels, office buildings | Close background apps, Low Power Mode, carrier settings update |
| Manchester | iPhone 13 / 14 | EE | Indoor offices, Metrolink stations | Close apps, enable Low Power Mode, iOS update |
| Glasgow | Samsung Galaxy S23 / S22 | Vodafone / EE | Damp flats, office buildings | Enable Touch Sensitivity, Power Saving Mode, close apps |
| Edinburgh | Samsung Galaxy S21 / Note 20 | O2 | Indoor offices, university buildings | Touch Sensitivity, Power Saving Mode, software update |
| Cardiff | iPhone 14 / Samsung S22 | EE / O2 | Indoor shopping centres, train stations | Close apps, Low Power Mode, enable Touch Sensitivity (Samsung) |
Testing iPhones and Samsung devices on O2 and EE networks in London, Manchester, Glasgow, Edinburgh, and Cardiff revealed that freezing during calls is largely environment- and network-related. Users reported fewer freezes when background apps were closed, Low Power or Power Saving Mode was enabled, and carrier/software updates were applied. Freezing was most pronounced in tunnels, densely built areas, and damp indoor locations.
Freezing during calls on O2 and EE in the UK is primarily due to network fluctuations, environmental factors, and device load. iPhone users can resolve freezes by closing background apps, enabling Low Power Mode, and applying carrier/software updates. Samsung users benefit from Touch Sensitivity, Power Saving Mode, and app management. AvNexo users in London, Manchester, Glasgow, Edinburgh, and Cardiff can apply these tested, UK-specific solutions to maintain smooth call performance, even in tunnels, high-rise buildings, or low-signal areas.
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