How to Enable VoLTE on Xiaomi, Redmi, or POCO Phones in the UK

VoLTE, or Voice over LTE, is a technology that allows voice calls to be transmitted over the internet. Whether you own a Xiaomi Mi A2, Redmi Note 8 Pro, or any other Xiaomi, Redmi, or POCO device, VoLTE converts your voice from analogue to digital and sends it as data packets across the mobile network.

Activating VoLTE on your UK Xiaomi phone—especially when using carriers like Vodafone UK, EE, O2, or Three—can significantly improve call quality. Traditional voice calls usually transmit at around 8 kbps, while VoLTE can reach up to 13 kbps, providing clearer, sharper audio.

Why VoLTE Matters on Xiaomi Devices

  • Improved clarity: Calls sound crisper and less prone to distortion.
  • Faster call setup: Connections are established more quickly compared to traditional 2G/3G calls.
  • Better network efficiency: VoLTE allows simultaneous use of voice and 4G data.
  • Reduced battery consumption: High-quality calls with minimal energy drain.

VoLTE performance can vary slightly depending on your UK carrier and location:

  • Vodafone UK: Evening call quality may vary due to network load, but VoLTE ensures stable audio across cities like London, Birmingham, and Manchester.
  • EE: High upload stability improves VoLTE performance for conference calls and streaming audio while on calls.
  • O2: Indoor reception in older buildings can be patchy, yet still superior to 3G voice calls in Liverpool, Leeds, and Glasgow.
  • Three UK: 4G handovers may take slightly longer, but VoLTE maintains call continuity once connected.

How to Enable VoLTE on Xiaomi, Redmi, or POCO in the UK

By default, VoLTE is often disabled on Xiaomi devices. Follow these steps to activate it:

  1. Open the dialler app on your Xiaomi device and enter: *#*#86583#*#*. You should see a message indicating “VoLTE carrier check disabled,” confirming VoLTE is now enabled.
  2. Go to Settings > SIM cards & mobile networks.
  3. Locate and enable the Use VoLTE option.
  4. If you have a dual SIM Xiaomi phone, the option will appear under Settings > SIM cards & mobile networks > SIM1 / SIM2.

Once enabled, your Xiaomi, Redmi, or POCO device can make high-definition voice calls over 4G, LTE, or WiFi, provided your carrier supports VoLTE and you are within coverage areas.

UK-Specific Tips for VoLTE Users

Activating VoLTE is especially useful if you frequently make calls in dense urban areas like London, Manchester, Birmingham, or Glasgow. It ensures clearer communication for personal or business calls while making the most of your Xiaomi’s 4G/LTE connectivity.

  • Always check that your mobile plan supports VoLTE and that your SIM is compatible.
  • For dual SIM users, ensure you select the correct SIM for VoLTE calls.
  • Indoor call quality may improve significantly in offices and apartments where traditional 3G calls often drop.
  • Keep your device updated to the latest MIUI version for optimal VoLTE performance.

Final Advice

Once VoLTE is enabled, you will notice improved call clarity, faster connection times, and a more reliable calling experience across the UK. This is particularly noticeable in cities with heavy mobile traffic like Leeds, Sheffield, and Edinburgh.

By following these simple steps, you can make the most of your Xiaomi, Redmi, or POCO device and enjoy high-definition voice calls throughout the UK on carriers like EE, Vodafone UK, O2, and Three.

Related UK Xiaomi Guides

Comments

Post a Comment

Popular Guides at UK Xiaomi

How to Use the Equaliser for Headphones, Earbuds, and Headsets on Xiaomi Phones

How to Boost Headphone Bass on Xiaomi Phones (MIUI Guide for UK Users) Music is closely tied to emotions, and for many UK users, headphones are a constant companion throughout the day—whether commuting in London , relaxing in a Manchester flat, or catching up on podcasts in Birmingham . Naturally, everyone wants the best possible sound quality from their Xiaomi device, without relying on third-party apps that take up storage space. Why Bass Matters Before boosting headphone bass, it’s worth understanding the basics. Humans can hear frequencies from 20Hz to 20kHz. The lower end, below 250Hz, represents bass sounds. Within this range, the lowest frequencies contribute to deep bass, while slightly higher frequencies provide “punchy” bass. MIUI’s equaliser allows you to tweak these frequencies, regardless of the headphone model—be it Mi AirDots , Redmi AirDots S, or higher-end wired headphones. Setting up the equaliser properly is crucial for achieving the richest sound experience...
Read more

How to Identify the HyperOS Version on Your Xiaomi Phone

Reality check: HyperOS version numbers on Xiaomi are more confusing than most UK users expect Xiaomi keeps rolling out HyperOS updates that promise smoother performance and new features. On paper, it sounds straightforward. In practice — especially across UK devices — many users have no idea whether they’re on HyperOS 2.1 or 2.2. The confusion isn’t your fault. Xiaomi’s version naming is unnecessarily opaque, and after updates land on networks like EE or O2, the numbering rarely looks as clean as guides suggest. This is where people usually get it wrong. They look for a big “HyperOS 2.2” label and assume it will be obvious. It usually isn’t. Xiaomi hides the real clue inside the build number, and if you don’t know what to look for, you can stare straight at it and still miss it. If you want clarity — and avoid misreporting your version in the Xiaomi Community — here’s how to read it properly. What actually causes the confusion in the UK rollout Across UK Xiaomi, Redmi an...
Read more

How to Change the Default Launcher on Xiaomi MIUI/HyperOS Phones

How to Change the Default Launcher on Xiaomi MIUI Phones in the UK Reality check: default launcher works, but isn’t for everyone For many UK Xiaomi users, the default MIUI launcher is functional. It comes packed with customisation options, gesture controls, and integration with system features like widgets and themes. In practice, though, not everyone is satisfied. Some find the interface cluttered, others dislike the stock icon styles, and some simply prefer the performance and flexibility of third-party launchers. This is where people usually get it wrong. Many think changing the default launcher is complicated or risky. The reality is very different — MIUI allows swapping the default launcher at any time, and you can always revert without major side effects. Why you might want a different launcher Third-party launchers like Nova Launcher, Action Launcher, or Smart Launcher often offer: Highly customisable home screens Improved gesture support Better icon packs and them...
Read more

Xiaomi WiFi Disconnecting on BT/Sky — UK Fixes

Reality check: Xiaomi Wi-Fi drop-outs on BT and Sky aren’t random — and quick fixes often miss the point If your Xiaomi keeps disconnecting from Wi-Fi at home — especially on BT or Sky broadband — you’re not dealing with bad luck. Across UK households, particularly in older flats and semi-detached homes, this problem shows up with uncomfortable regularity after certain HyperOS updates. Users often blame the router first. Sometimes that’s fair. But in many UK Xiaomi cases, the behaviour is coming from the phone’s own network handling rather than the broadband line itself. This is where people usually get it wrong. They reboot the router, run a speed test, maybe even upgrade their tariff — and the drop-outs keep coming back. Because the real friction often sits inside HyperOS Wi-Fi management, not the BT or Sky line quality. If you want this fixed properly, you need to focus on the pressure points that actually break most often. What actually breaks most often on Xiaomi Wi-Fi...
Read more

Xiaomi HyperOS 2 Cold Resistance Mode: Protecting Battery in Winter

HyperOS 2 Cold Resistance Mode on Xiaomi Phones: What Actually Happens to Your Battery in a British Winter Reality check first. Cold weather is not just mildly inconvenient for smartphones. It is one of the fastest ways to expose battery weaknesses, especially on devices used daily across the UK where damp air, sudden temperature swings, and long commuting hours create conditions phones were never truly designed for. Xiaomi, Redmi, and POCO devices are no exception. In fact, many UK users notice battery behaviour changing dramatically when winter hits: phones shutting down at 15%, charging slowing to a crawl, or performance suddenly dipping when stepping outside. HyperOS 2 introduces something Xiaomi rarely advertises loudly but actually matters: Cold Resistance Mode . On paper, it sounds like another background optimisation. In practice, it directly addresses why batteries struggle when temperatures drop. But let’s remove the marketing gloss. This feature helps, yes. It doe...
Read more

A Xiaomi Setting to Extend Battery Life and Reduce Data Usage

Reality check: HyperOS battery drain isn’t always the battery — sometimes it’s MSA quietly running in the background If your Xiaomi battery seems to drop faster than it should — even after the HyperOS improvements — there’s a good chance something invisible is chewing through resources. One of the most overlooked culprits in the UK user base is MSA (MIUI System Ads). This service runs quietly in the background to deliver recommendations and adverts inside certain system apps. On paper, it’s meant to “improve personalisation”. In reality, many UK Xiaomi users never meaningfully interact with these suggestions — yet the process keeps consuming data and battery anyway. This is where people usually get it wrong. They blame HyperOS broadly, or assume their battery health is collapsing, when in fact a background service is doing work they never asked for. Disabling MSA won’t perform miracles — but on the right devices, it can produce a measurable improvement in both standby drain a...
Read more

How to Enable Safe Mode on Xiaomi Phones

How to Use Safe Mode on Xiaomi Phones (MIUI Guide for UK Users) Beyond the usual MIUI settings, Xiaomi offers a feature called Safe Mode on its smartphones, including Redmi and POCO devices. In this guide, we’ll explore what Safe Mode does, why it’s useful, and how to enable or disable it on your Xiaomi device. What is Safe Mode on Xiaomi Devices? Safe Mode allows your Xiaomi phone to start a special boot sequence, loading only the system and pre-installed apps. When activated, your device runs solely on essential MIUI programs, temporarily ignoring any apps you’ve installed since purchase. This makes it easier to troubleshoot issues caused by third-party apps or misconfigured settings. Importantly, Safe Mode does not delete any of your personal data. All your photos, messages, and files remain intact. The mode is purely a diagnostic tool, helping you pinpoint the source of crashes, freezes, or abnormal behaviour on your Xiaomi, Redmi, or POCO phone. UK users in cities like ...
Read more

HyperOS Notifications Delayed — Xiaomi UK Guide

Reality check: HyperOS notification delays on Xiaomi aren’t random — and UK users feel it more If notifications on your Xiaomi arrive late — or worse, only appear when you unlock the phone — you’re not imagining things. Since the rollout of HyperOS, delayed alerts have become one of the most persistent complaints among UK Xiaomi, Redmi and POCO users. WhatsApp messages arriving minutes late. Banking alerts showing up after the moment has passed. Email push behaving like it’s stuck in traffic. It’s frustrating — and more importantly, it’s predictable. This is where people usually get it wrong. They blame the app. Or the network. Or assume the phone is simply “slow”. In reality, HyperOS is often doing exactly what it was designed to do: aggressively managing background activity to protect battery life. The problem is that in real UK usage — especially on networks like O2 where indoor signal can fluctuate in older flats — that behaviour sometimes goes too far. The good news? Mos...
Read more

Optimise Xiaomi HyperOS Charging for Longer Battery Life in the UK

Reality check: Xiaomi’s Optimised Charging helps — but it’s not the battery miracle people expect With HyperOS, Xiaomi quietly introduced a feature designed to slow down battery ageing: Optimised Charging (sometimes labelled Smart Charging). On paper, it sounds exactly like what most users in the UK want — longer battery lifespan with zero effort. And yes, it can help. But not in the simplistic way many guides claim. This is where people usually get it wrong. Users often flip the toggle expecting immediate battery gains — longer screen time, faster charging, cooler temperatures overnight. That’s not how this feature works. In reality, Optimised Charging is a long-game protection tool. Used correctly, it reduces long-term battery wear. Used blindly, especially on inconsistent charging routines common in busy UK households, it may barely activate at all. So before you switch it on and forget about it, you need to understand what it actually does inside HyperOS — and when it q...
Read more

Xiaomi Charging Slow in Cold UK Weather — Explained

Xiaomi Charging Slow in Cold UK Weather — Explained If your Xiaomi suddenly starts charging painfully slowly during colder months in the UK, you’re not imagining it. Every winter, users from London to Manchester report the same thing: plug in the phone, and the charging speed crawls — even with the original fast charger. Here’s the blunt truth: in most cases, your charger isn’t broken and your battery isn’t dying. Cold UK weather triggers built-in battery protection systems inside HyperOS that deliberately slow charging to protect long-term battery health. This guide explains what’s really happening — and when you should actually worry. Why Xiaomi Charging Slows Down in the Cold All modern Xiaomi, Redmi and POCO phones use lithium-ion batteries. These batteries are sensitive to temperature, and HyperOS actively limits charging speed when the battery gets too cold. In the UK, this commonly happens when: Your phone sits near a cold window overnight You leave it in the car...
Read more