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Are O2 prioritising certain types of data traffic for the iPhone?

Categories: iPhone, O2
By: , IntoMobile
Thursday, October 29th, 2009 at 5:26 PM

….. or are certain apps on the iPhone just not very good at connecting to the network? Let me tell you my story…

The other day there was a particular track that I fancied listening to, but I was out and about – normally I use iTunes via the Mac, but on this occasion it wasn’t an option – so for once, I fired up the ITunes app on the iPhone.

I enjoyed the user experience (well done AGAIN Apple!) – finding stuff, previewing it, and buying is SIMPLE – the only criticism I could possibly level is that perhaps the fonts and graphical bordering are a bit big – it would be nice to get more results/text on-screen in once go.

However I then purchase the track I wanted (Britney, obviously…!), and waited for a sluggish download – but I was shocked – the rate of download was incredible – seemingly only 20 seconds after I hit download, 7MB had shot down to the phone!

But how could this be? When I use Safari and Mail, the rate at which the network connection is made, and then rendering/email download occurs is slow – in some cases almost intolerably slow – and I know I’m not the only person that thinks this, it’s widely reported.

For some reason though, iTunes download traffic seems to be prioritised on O2s network – and to test this theory, I had a go at downloading a 15-track album – oh my god – it absolutely flew!

So this tells me one of two things:

1)     Either iTunes data traffic is prioritised on the O2 network – via IP, APN, or even at HTTP request level – something is going on….

Or

2)     Mail and Safari are really really bad at implementing their calls to network access / protocols for download

The disparity is quite amazing – I’d suggest you give it a go if you don’t believe it. Go to a 3G area (let’s at least give the network a chance to shine), and then try out collecting say 20 emails (or whatever is in your inbox to download), and then trying downloading a track. Now bear in mind a single iTunes track will probably be orders of magnitude larger than ALL the emails you download – what gives?!

Answers on a postcard, or better yet, in the comments to this post….!

About The Author

Ben Robinson

Ben is a 10+ year veteran of the Mobile industry – starting his career when SMS was a still a relatively new concept for most people (!), he has now consulted on everything from bleeding-edge Mobile content, to the next-gen accessories you might view it on. As a result he has a broad and deep knowledge in numerous areas of Mobile – from network operators to device vendors, to infrastructure and middleware vendors (not to mention content delivery) – and has worked for companies in all of these areas! He is based in the UK, a hotbed of activity for mobile, and recently became a father for the second time – as oppose to in his younger years when he was happy spend time tweaking all manner of mobile devices to 'nth' degree, he now looks for services and hardware that provide the most efficient, compact, and reliable improvements to his already manic life! It’s his opinion that Mobile solutions should be there to help to make your life better – if a particular solution (be it service or device) isn’t doing this, he believes you need to ask the very important question of why you continue to use it... His focus at IntoMobile is mainly on Mobile content, services, and infrastructure, particularly as regards the UK market – and with the occasional look at devices. Additionally, using his extensive experience in the industry, he will provide commentary on the industry at large, with regular (and hopefully thought-provoking) articles.

  • Shimmy

    I’ve experienced the exact same thing, on AT&T 3G. Tracks and podcasts will download really fast, but Mail and Safari don’t seem to enjoy the same data speed. I think the issue may be with the servers at Apple though, since (and I don’t know if it’s just perception or what) it seems to do it over Wi-Fi too. Have you experienced the same thing over Wi-Fi as well?

  • Matt Radford

    There’s an easy way to test this one Ben – turn on a VPN. All the traffic will be obfuscated from O2, so you’ll be able to compare download speeds between apps.