My advice.... if you have a job to do, and you have to think about it in any way, search the App Store.

Apps that are great in one persons eyes are hours you will never get back in another....

My Apps (although as a techie I wouldn't touch iOS with a long stick) revolve around Hexadecimal and Binary conversions and some wireless snooping and sniffing apps. I have some mapping (OS and Google), both ground and celestial, on the phone and I wouldn't use the phone as a primary navigation tool if my life depended on it!

There is a Swiss Army App, has some basic stuff, torch, calculator, ruler, magnifier glass and a rather cool spirit level. Once calibrated it suits me rather well.

Other than that, I use it mainly for social networking and silly little games - some are good, some OK most are utter crap.

One thing I will say by way of advice, iPhones are very fragile - get a decent cover for it.

And watch how your apps use data, Android has some very good data management features, not sure about iOS, but look into it.

My wife got her first smartphone just before Christmas, she was a complete technophobe, but she uses it all the time now.

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Never underestimate the power of stupid people in large groups.