Xiaomi Mi Mix 3 full review

Vodafone’s 5G network has been switched on in a number of key locations around the country, including Birkenhead, Birmingham, Bolton, Bristol, Cardiff, Gatwick, Glasgow, Lancaster, Liverpool, Manchester, Newbury, Plymouth, Stoke-on-Trent and Wolverhampton, as well as home to Tech Advisor’s office, London. You can also roam on the Vodafone 5G network in 55 European cities.

But to say Vodafone 5G is available in London is a bit of a stretch, with coverage described as patchy at best. The closest 5G spot to our Euston Road office is a 10-minute walk away in Pentonville Road. We strongly advise you to check out Vodafone’s 5G coverage checker with the exact location in which you’ll be looking to use 5G before upgrading to a 5G phone.

Vodafone’s 5G plans themselves are no more expensive than the 4G plans, it has to be said, but 5G-capable phones come at a premium. 

Mi Mix 3 5G is Xiaomi's super-value slider phone, and a Vodafone exclusive. Its cheapest 5G plan comes with 5GB of data, which is likely not enough if you’re using 5G to its full potential, and costs £48 per month with an upfront fee of £29. The total cost over the 24-month term of the plan is £1,181.

For unlimited data the best deal will set you back anywhere between £56 per month (Unlimited Lite) and £63 per month (Unlimited Max), or £65 per month with an included Amazon Prime Video, Spotify, NowTV Entertainment or Sky Sports Mobile Pass. You’ll still pay £29 per month, so the total cost here is £1,373, £1,541 and £1,589 respectively.

Consider that the non-5G version of the Mi Mix 3 costs £499 direct from Xiaomi, and as little as £379.98 from eBuyer. Add a couple of hundred quid for a SIM-only plan and you’re looking at somewhere near £600 if you don’t need 5G. 

Xiaomi Mi Mix 3

Of course, the inclusion of a 5G modem is not the only difference here. Whereas the SIM-free Mi Mix 3 comes with a 10nm Snapdragon 845 processor and Adreno 630 GPU, the 5G model has the next-gen 7nm Snapdragon 855 and Adreno 640. The Snapdragon 855 is claimed to offer a 45% improvement in overall performance and a 20% boost in graphics, as well as improved efficiency. 

The 5G model is also a little bit chunkier to allow for the 5G modem, but the difference amounts to just 8g on our scales (220g vs 228g). Despite this, Mi Mix 3 5G packs a 3,800mAh battery in comparison to the standard model’s 3,200mAh. With the standard model you get a free wireless charger in the box, so it’s swings and roundabouts.

Elsewhere the specs are the same, with a 6.39in Full-HD+ 19.5:9 Samsung AMOLED panel, 6GB of LPDDR4X RAM, 128GB of storage; and dual-lens cameras front (24Mp + 2Mp) and back (12Mp + 12Mp). Read our full review of Mi Mix 3 to learn more.

Your choice between Mi Mix 3 and Mi Mix 3 5G therefore comes down to three things: how much performance matters to you, whether 5G is available in your area, and what is your budget. Let’s look at performance. 

Xiaomi Mi Mix 3

Mi Mix 3 vs Mi Mix 5G: Performance 

In order to test 5G performance we headed to The Lexington on Pentonville Road, slap-bang in the middle of what Vodafone says is one of its strongest coverage areas for 5G within London. 

We sat Mi Mix 3 and Mi Mix 3 5G side by side, with both running on Vodafone’s network, and simultaneously ran our benchmarks. It came as no surprise to us that 5G is faster, but we had expected to see a greater difference between the two phones.

Using the Ookla Speedtest app we ensured each phone was connected to the same server, then ran several revisions.

The Mi Mix 3 5G hit a high of 144Mbps for downloads, but was typically closer to 110Mbps. It also recorded 41.2Mbps for uploads, but went as low as 19.5Mbps in one test, often turning in around 27Mbps.

Meanwhile, the 4G model hit a maximum of 113Mbps downloads and 33.6Mbps uploads, but around 67Mbps downloads and 24Mbps uploads were more typical during our testing.

Despite the 5G network promising lower latency, ping was typically higher at around 18ms on the 5G model versus 17ms on the 4G model, going as high as 20ms in one test.

Xiaomi Mi Mix 3

Speedtest is just a synthetic benchmark, so we also ran some real-world tests. Tech Advisor’s admittedly ad-heavy website loaded around a full second faster on the Mi Mix 3 5G, which doesn’t sound like much but if you’re doing a lot of browsing all those seconds will add up.

We also downloaded the movie we use for battery benchmarking, The Book Thief, on to each device. We did this twice, because surprisingly the first time Mi Mix 3 had finished downloading the film and the 5G model had reached only 58%. The second time around it was first to the finish line, with a 20% lead over the standard Mi Mix 3. It seemed to us that 5G speeds were generally very good, but also a bit hit and miss.

Given that 5G is going to be available to you only some of the time, we also ran other synthetic performance benchmarks on the two phones. Our two staples, Geekbench and GFXBench, refused to run on Mi Mix 3 5G, but we did get it to complete AnTuTu and PCMark for Android. 

For what it’s worth the non-5G Mi Mix 3 recorded scores of 8,957 (multi-core) and 2,423 single-core in Geekbench, and in GFXBench turned in 60fps in T-Rex, 54fs in Manhattan, 39fps in Manhattan 3.1, 21fps in Car Chase, 23fps in Vulcan (normal tier), 15fps in Vulcan (high tier), 23fps in Aztec Ruins (normal tier) and 15fps in Aztec Ruins (high tier). Had the Mi Mix 3 5G run these tests we would have expected slightly higher results, as we saw in AnTuTu and PCMark. 

In AnTuTu the 5G model turned in a very impressive overall score of 365,684 against the 4G Mi Mix 3’s 290,138. PCMark told a similar story, with Mi Mix 3 5G recording 9337 points and the 4G version 8482.

Drilling down into the various components of PCMark we found the 5G Mix took the lead across the board, with consistently higher performance. We’ve compared all our test results in the chart below.

Mi Mix 3 vs Mi Mix 5G: Conclusion

Mi Mix 3 is a great phone, and will cost you half what it costs you to upgrade to the 5G version. If your budget has no limit you’ll find faster network connectivity in a few UK locations (with improved coverage gradually rolling out over the next year), and generally better overall- and graphics performance from Mi Mix 3 5G.

If you are due an upgrade anyway then it makes sense to start thinking about 5G, but for everyone else there’s no immediate rush to jump on the bandwagon.

Also consider that Vodafone is not the only UK mobile operator with a 5G phone service - EE has already gone live, with Three following in August and O2 in September - though Vodafone is the only one to stock Mi Mix 3 5G, the best-value 5G phone.

Learn more in our full guide to what is 5G and in our round-up of the best 5G phones and best 5G phone deals.

Related stories for further reading


Xiaomi Mi Mix 3: Specs

  • 6.39in Full-HD+ (1080x2340) AMOLED display
  • MIUI 10 (based on Android 9.0)
  • 2.8GHz Qualcomm Snapdragon 845 octa-core processor
  • 6GB/8GB RAM
  • 128GB/256GB storage, non-expandable
  • dual-SIM dual-standby (2x nano)
  • all UK 4G bands
  • 802.11a/b/g/n/ac Wi-Fi
  • Bluetooth 5.0
  • 24Mp + 2Mp selfie camera
  • 12Mp + 12Mp dual-lens rear AI camera
  • USB-C
  • 3,200mAh battery
  • wireless charging (10W Qi charger supplied)
  • 157.9x74.7x8.5mm
  • 218g