I always enjoy talking about the media functionality of the Samsung Galaxy range as it's so good - and I'm happy to do the same here. It's a media marvel in every sense of the phrase, from music to video to even the FM radio, and if you're after a spot of entertainment on the go there's still very little better out there regardless of its age.
In terms of the overall media experience, only the iPhone 5S and the iPhone 5C really offer anything distinctly better. Even then there's the matter of those smaller screens, though that has been rectified with the recently released iPhone 6 and iPhone 6 Plus.
The Galaxy S4 has done away with the FM Radio of the S3 for some reason though – it's a shame as the Samsung app was one of the best out there for listening to some tunes over the airwaves. Sure, there are dozens of excellent internet radio apps, but for free music that you could record when needed, I loved that ability on the Galaxy S3 and Note 2.
It's also worth noting that Samsung has upgraded the rear speaker as well, which is now a little richer in the bass tones and makes watching videos or YouTube clips without earphones that little bit better. It's nowhere near as good as BoomSound from HTC, but it's definitely a big step forward.
Sonically, the Samsung Galaxy S4 is a great device for music consumption. You can lob in as many tracks as you like through the microSD slot, the interface is fluid and easy to navigate, and comes with so much control that if you've got quality headphones and high bit-rate tracks, it should be impossible not to get an excellent experience out of the phone.
One of the real winners here is the music player itself - there's just so much to do.
I'm talking about the main player here - there are other options in the shape of Google's Play Music, and of course you can check things out using the music portion of the Samsung Hub (the South Korean brand's version of iTunes, helpfully now packaged all up in one place) but the main way to transport tunes to your ears is through the main music app.
It's easy to get to the tracks you want here too, as when you open it up you're presented with either a big long list of all the albums or songs you own, although if you have missing album artwork the phone won't be able to find it for you.
That said, there are so many apps on the Google Play Store that you shouldn't have an issue with it - I'd recommend you look at something like Player Pro to help you out with this.
Once you've selected the track, you can continue building a playlist or press the album artwork icon at the bottom of the screen where a little music player has started. From here there's all manner of things you can do: from searching through a song using a visual representation of the volume to setting the sound to mimic your ears perfectly, it's all here if you open up the menu.
The latter functionality is really nice. AdaptSound takes you through a wizard that asks you to listen to a variety of frequencies and determines which ones you can hear. It will then boost the sound to make sure it fits into the range you can actually hear, which will diminish as you get older.
Music also supports voice control here as well, which in theory would be really useful. The ability to play, pause, skip, and toggle the volume is a really nice thing to have - except it doesn't really work very well.
General performance is hit and miss, volume up and down go up and down very slowly, and if the phone is in sleep mode (which it will be most of the time) then the commands don't work at all.
I loved it when I forced the screen to stay on and could just command the phone to change tracks by asking, and without having to press any buttons, but that kills the battery. When it doesn't pick up your voice properly it's a frustrating experience.
I would say it was more of a niche feature, and annoyingly if you've got voice control turned on in the settings, the music player will constantly tell you that you can change things using the voice, with no way to permanently disable the notification.
Video on the Samsung Galaxy range, like music is excellent. However, unlike music, it is head and shoulders above the rest of the competition, in no small part thanks to that Full HD Super AMOLED screen.
When I review phones, I usually gravitate towards downloading my favourite apps to improve the experience - SwiftKey, PlayerPro and MX Player are the first three on my list. However, with the Galaxy S4, I had no need for a new video player app as everything I wanted was serviced by the inbuilt experience.
The interface is clean, with a white background enabling the thumbnails of the videos you want to watch really bringing the content to the fore. Then you've got the neat functionality of videos auto-playing as thumbnails, which is possible thanks to the power of the processor. It's not critical functionality, but it's really fun to watch.
You've also got a side link to the videos you've downloaded from Samsung's Video Hub, which makes it a complete and integrated video experience within one app. Many won't use this option that often, but it really works if you've got a couple of titles in the cloud that you want to bring down and means you don't have to mess around in the main Video Hub.
The phone can detect chapters within the video file, which makes it really easy to navigate through your content when you need to - this is an oft-overlooked piece of functionality that I'm glad to see pervades through the Galaxy S4 from previous smartphone iterations.
But enough about what you can do and more about the experience itself - and it's glorious. The colour reproduction, the clarity of the screen - it's all there in spades and makes me just want to gorge myself on movies for hours, rather than having to wait until I can find a tablet or a PC to do it with.
Six years ago, when video watching on a smartphone started to trickle into the mainstream, I used to consider a phone that enabled you to watch a music video without having to squint too hard was a pretty decent device.
We're now at the other end of the scale with the Samsung Galaxy S4. There are few better phones to watch an episode of Supernatural, a host of music videos from your favourite band and the latest downloaded blockbuster on.
The only slight issue I had with the Galaxy S4 when using the handset for video was with the smart pause functionality, which is designed to make it so you don't miss your video when someone comes to ask you a question or you need to look up to make sure you haven't missed your stop.
When detecting that your eyes are on the screen, the S4 will keep the action playing. When you move your head away from the action it's designed to pause, and for the most part it works.
Which makes it strangely annoying on those odd occasions where it doesn't. It also doesn't work if you're holding the phone too far away from your face, when the action won't kick in either. With the higher resolution screen you can hold the S4 in a more comfortable way that's further away from the face, which ruins the effect somewhat.
In terms of clarity, the only rival I've seen from a phone of this vintage is the HTC One, which does have some lovely scenes thanks to the Super LCD3 technology. However, while that does have the edge when it comes to making fuzzy standard-def footage look good, the screen pales in comparison to the Full HD Super AMOLED offering on the Galaxy S4.
In terms of video streaming, I tested the Samsung Galaxy S4 using EE's 4G service, and I was more than pleasantly surprised with the result. Having used Netflix on the Three network for a while I've always been impressed with the quality of stream that's been offered when using HSPDA+.
However, it's a whole new world with 4G and one that instantly makes me recommend that you think about how you're going to get the service on your phone. It's blisteringly quick and brings a whole new dimension to the way you'll use your Galaxy S4, as suddenly you can get a whole world of content on the go.
You can even download movies on the go in an extraordinarily fast time, but therein lies the rub: EE has some pretty tight data limits unless you're willing to fork out a fair whack each month.
They're not that low if you're just doing the same general 3G business you always have, but I was so impressed with the speed of things like the internet and, in particular, movie streaming on the Galaxy S4, that I'd recommend checking out some of the 4G deals out there.
Samsung Hub is a much better all-in one media content service than Samsung had before, when all the disparate entertainment sections were scattered around the phone.
With this attractive hub, Samsung is looking to take a real crack at iTunes by making a holistic experience, whether it's games, video, or music you're after.
Actually, scratch that last 'music' part - Samsung ended support for its own Samsung Music MP3 store on July 1, 2014. It's set to replace this with a free (and ad-free) radio service called Milk Music, but that's only available to US customers at present.
Not that potential Galaxy S4 customers will be missing out - Google Music is a more than able replacement. In fact, it's always been better than Samsung Music, which is probably part of the reason the latter was cut.
Google Music gives you a competitively priced and well-stocked MP3 store, a Spotify-rivalling subscription streaming service, and the ability to upload and stream your own music to and from the cloud. It's rather brilliant.
Also, Samsung customers have been given a 90-day free trial of Google Play Music, the aforementioned subscription service.
Back to Samsung Hub, and the UI, as I mentioned, is really nice, with swipes enabling you to get through all the content, and a home screen that throws up all the different kind of content it thinks you might like.
It's not got universal appeal, as even though you're paying a decent price for the latest blockbuster, you can't watch content on your larger screen without a HomeSync device. Connecting to a TV or streaming using AllShare won't let you play video you've purchased from the Samsung Hub, which feels like a massive missed opportunity here, although Samsung tells me it's due to a licensing issue.
It's not really a great place to get all your content thanks to the high price, and it would be excellent to see a wider remit by including third party apps to supplement the lack of functionality in places.
For instance, and I'm sure there's a licensing reason for this, how great would it be to see Netflix in the Video Hub to enable instant streaming, rather than having to pay £10 or so just to get a video in SD that you can only really watch on the phone?
Storage on the Samsung Galaxy S4 is limited if you opt for the 16GB version of the phone, as over 6GB of it is taken up by pre-installed apps and the OS itself. That might not sound like a problem when you consider that you can whack in up to 64GB of microSD storage thanks to the expansion slot, but this is the zone where apps download.
And with the prevalence of large HD apps and games now coming along (for instance, Need For Speed: Most Wanted takes up nearly 2GB of space on the internal memory) you can see how quickly that could get filled up. You start with only 9.27GB of the 16GB of space you've paid for from the outset, which is around 2GB less than offered by the same capacity Galaxy S3.
Samsung has updated the phone since launch to help this issue, as where previously some cloud services like Dropbox would sync all the photos it has to the phone automatically (easily taking over 1GB for any existing user) this has now been disabled, making it a user option.
There are more things you can do to mitigate this, but you have to know where to look. For instance, videos you buy from the Samsung Video Hub can run to well over 1GB, but if you head into Settings from within that app you can tell the phone to put the film on your SD card instead to make it a little less of a strain on the internal memory.
This isn't a problem that only Samsung has to deal with, but the fact that the internal storage is so limited thanks to the pre-installed elements means this becomes even more of an issue than on most other devices.
The memory card slot really does help though, by giving you a safe haven for your media. My advice is to get your hands on the 32GB version of this phone unless you want to be really careful with your use.
However, with the update I found things to be a lot better - I downloaded 20 games of varying sizes to the phone, way more than most people will use regularly, and still had 3GB of space remaining. So while that 2GB drop is unwanted, it's not unmanageable in any way and less of an issue now.
It's also worth mentioning that you've got two years of Dropbox storage on the phone too. It's not just a paltry amount either, but 50GB to lump all manner of home movies and photos up into the cloud.
But ultimately, Samsung has dropped the ball with the internal storage limit - it should have realised that users want the full whack when trying out a new phone, and this is bordering on unacceptable if you're a heavy user.