I reviewed the Sony Xperia 5 Mk IV in October 2022 and was very positive about the dinky (kinda) flagship from Japan. Since then, a few things of note have happened, which I'll come to - but for now, the question is whether or not it could still be used as a primary phone 3 years later - and what's still great about it, if anything.
We've had all the Mk V (1, 5, 10), Mk VI (1, 10) and Mk VII (1, 10) Xperias since then of course as the years have progressed. Notice anything missing? Yes, you're clearly a genius - the Demise of the Five. They made a Mk V but then that seems to have been the end of it, though traditionally tight-lipped Sony don't actually say so. I suspect that with the 10 Mk VII specs being somewhat upped this year, it doesn't point to Five Alive!
This 5 Mk IV has run out of updates. OS was given a measly two, so Android 14 was the last, and 3 years of Google Security Updates, so until September 2025. I write in September here and the phone has indeed been given quarterly updates for the last 12 months, but I suspect that this is it now. There might be a September update coming this month I guess, but very possibly not - and even if there was, it would certainly be the last.
But most people don't care about that (or even know) and chugging along in the background is the Google-controlled Play System Updates, which keep things pretty safe for way into the future. So no development of, or updates to, Sony apps going forward but everything else should continue until Google pull the plug on Android 14, I guess, which, going by recent comparative behaviour should be at least 10 years. Android 6 (Marshmallow) was released in 2015 and is still supported at time of writing, so on that basis, this Xperia should be good for another 7 years!
The AlbumArt on the Always on Display was stripped away after the Mk IV Xperias (1, 5) which is a great shame - and further, the version on the 1 Mk IV goes to sleep after the first track. So it shows the AlbumArt of the last playing track when the screen timed out and stays there. That makes the 5 Mk IV even more special as it doesn't do this and continues to update as tracks change. No idea what is different between them to have changed this but in my experience here, this is what happened. Anything newer than the Mk IV devices don't get it at all.
And that is also true of the Notification LED. A tiny dot in the top-right, front-facing, which gives notifications of stuff coming in, charging status and so on. It's hard to stress how useful this is, even with a bright Always on Display available too, as it's the glanceability (if that's a word) factor. It catches the eye as it flashes, changes colour or glows - for an instant view of what's come in or how the battery is or whatever. For anyone having not used a phone with this in the past, you don't know what you missed!
So various LED colours then - red for low battery, green if the phone is charged enough, orange if lower but charging, white for most app notifications (though developers were able to assign their own or even use patterns of blinking - so check your apps as they might still do it), blue is for, you guessed it, Bluetooth stuff and there are apps on the Play Store which allow further granular control. It's a hark back to earlier years when most OEMs did this but now, the best you can hope for is, yes, third party, but certainly no physical lamp (that I'm aware of) so all in-screen. So anyway, yes, gone.
The price is now of benefit to buyers of course, though you'd be hard-pushed to find a new one now (and if it had been sitting on a shelf in a stock room, the battery would be knackered by now anyway!), a far-cry, used, from the £949 release price in the UK! I just had a look on CeX in the UK for a used one in good condition and it seems to be about £300 - less on eBay no doubt - so certainly less than a third of that release price, maybe even a quarter.
This was the first 5-series Xperia that got Qi wireless charging and three years on it's still working perfectly well here. We don't get any battery health data here so without deeper diving with various apps/tools/testing, I can't see what that is - but it certainly appears to be working well and not far away from the review data I quoted three years ago. Yes, the 5,000mAh battery in this dinky device (how did they fit it in?!) is still quite superb - my 10% Reading Test still returns a result of over two and half hours and for my average daily use, a day and a half if needed. Your mileage will vary of course, based on how you use your phones.
The dinky physical form is now unique I think. Certainly in its 21:9 ratio. It's very cute - and the 5 Mk V went fatter, so not as nice. It's really slim and pocketable and even for someone not wanting to use it as their main phone, it can be a perfect on/offline MP3 Player (I'll come to that later though). I did recently wonder about the 21:9 and conclude that Sony were wise to switch out to 19.5:9 for the Mk VI model (1) and Mk VII (1, 10) but I'm not so sure with the slim MP3-player sized 5 Mk IV here. It kind of feels just right for purpose as it is. It would be nice to see it in 19.5:9 but I do think it would have less impact (and the 10-series has always been a bit chunkier anyway).
Yes, the boxy aluminium design works nicely with the symmetrical bezels making room for the sensors and speakers and flat, 6.1" 1080 x 2520 (449ppi) screen which remains bright and colourful (and free from scratches with GGVictus) with 101 ways in Sony's software to tweak and adjust it. It's a no-compromise (IP65/8) design which Sony have stuck with over the years with Xperia phones and it somehow just feels right again, even with this tiny phone. The only downside to the small form factor is that it's tiny for typing on the keyboard. Gboard can be adjusted to compensate but eventually you have to stop making it taller (as you can't see the rest of the screen) and there's nothing you can do, obviously, about the width. Tinkering with other keyboards or voice input might help, but for me, I accept that I'll need to put on my glasses and be careful (as I like Gboard).
The two-stage camera shutter button is (I think) still unique to Sony. Others have dabbled with capacitive and so-called smart buttons, but I do not believe anyone has come close to this very camera-centric, two-stage button with focus confirmation on-screen in the Photography Pro (camera) app and more. It's fiendish - and makes it a delight for anyone having used proper cameras. As we know, one can make the most of all the photography-centric apps if paired up with a Sony camera, but I've never used one. Check YouTube for reviews of those who are deeper baked into Sony's ecosystem. The other buttons are lovely too though - still working perfectly as they were on Day One, beautifully crafted, for volume and power/capacitive (instant) fingerprint scanning.
And then there's the 3.5mm audio-out/microphone-in socket (which I am guilty of underusing and favouring Bluetooth) giving high quality audio output via wired headphones. It works perfectly well still, 3 years on, with 24-bit output, the drilled-down full version of Dolby Atmos, 360 Reality Audio, upscaling of music via DSEE Ultimate and so on - for those who want to make use of wired headphones (and not be bugged with Notifications and the Google Assistant)! The SIM Card Tray with fingernail access, seems to have survived my abuse over the three years, in/out as a Serial SIM-Swapper regularly, but no sign of it breaking or wearing out.
The 128GB of storage seems mean by 2025 standards but they have stuck with that in all-but the 1-series (256GB) even with the 10-series on brand new release as I write. They clearly figure that their users are going to be happy with the microSD Card expanded memory option - and maybe they are right, with so much mobile phone use now being cloud-based. Speaking as a data-hoarder it kind of sticks in my throat a bit, but in reality, most of the time I have a good connection and use YouTube Music, streaming. So there's that. Anyway, armed with my 1TB card I'm OK - and anyone wanting more for far-reaching photography/videography storage will likely be on the 1-series anyway.
Because of the really clean version of Android on the phone, I remain, 3 years later, amazed at the processing speed of data driven by SnapDragon 8 Gen 1 (4nm) supported with 8GB RAM. Really snappy. I notice the difference when copying stuff from one place to another or getting the Play Store to install app updates etc. Blazingly fast - and without any resource-hungry AI to be driven, the 8GB RAM is perfectly good still. Yes, the phone flies with any tasks thrown at it, even demanding games (not that I do much of that)!
I hear no degradation in the powerful front-facing proper stereo speakers 3 years on. They remain, as I reported before, loud, bass-orientated enough (for the size of the phone), clear and with good tone. The Dynamic Vibration is something else that nobody does in the same way - and Sony sadly removed it with the Mk V devices (10-series never had it). This also works perfectly 3 years on and the fact that it is now missing from newer devices (other than the 5-series) is yet another great shame. The pulsating of the vibration motor to beats in the music is wonderful to feel/use. So, another tick for this older model. Hooked up to my WH-1000XM4 headphones (now, themselves, two generations old) remains perfectly good. Are we seeing a pattern here?!
I continue to make use of HDMI-Out (DisplayPort) here now and then, though again, with connectivity and latency options so good these days, it's something that needs to be on the 'handy-to-have' list rather than Mission: Critical one in 2025. Plex and Roku changed so much of that for me! All the connectivity stuff works perfectly well still to, so apparently the components were good at the outset and have stood the test of time.
One of the changes Sony made with the 1 Mk VI was to ditch much of the confusing Cinema Pro, Music Pro, Photo Pro and Video Pro cludge for a unified, user-friendly, non-geeky approach to all things camera. And that was a good move because all this stuff is complex on this phone and feels like it's geared up for photography nerds, not Joe Public. It depends on your approach to all things photography I guess but they'll reach a much wider audience by making it not so stuck-up-in-the-clouds. So yes, with the 2022 phone here, one is not going to get a change on that. You can always use a different camera app to keep things simple, I guess. However, it's nice to have a 2.5x zoom on the camera and 3 x 12MP shooters which do the trick with the Zeiss Optics with T* lens coating and all those Program, Shutter Priority and Manual modes. So many dials and buttons to play with for those who want to deep-dive.
I'm not really the 'pro' target audience for this phone as I won't be VLogging, shooting a movie or even recording high quality audio, but with the stuff on offer here generally as a mobile phone (and already in the house here - or cheap to buy now, used) it might be worthy of consideration, abandoned by Sony as it is. Is a later version really needed? I guess a lot of that depends on one's view regarding the later simplified auto-all camera (which, by the way, you don't either get in the 5 Mk V) and software update situation - for those who are not bothered about ongoing Sony support but are trusting Google to keep it secure, it's still worth a look in my view. It still has a good number of now-unique features which Sony have stripped out going forward (and nobody else even did) and it really is lovely in the hand, the pocket, light and dinky (for those with good eyes and nimble fingers for that keyboard)!
It has a load of good aspects going for it including Qi charging, great speakers (and audio all-round), Dynamic Vibration, super battery, a great OLED panel with the best AoD there is - and that LED Notification light. Well worth considering if you fancy a small phone which keeps it simple in many ways, no AI (apart from what Google supply) and still as fast as lightning in pretty much whatever you throw at it. It still works perfectly well in 2025 and is recommended if you can find one used - there's an awful lot of phone here for under £300.