Killing these frozen or multitasked apps, though, can be a real pain. Every app you open, regardless of whether they actually multitask or not, ends up down here, and sorting through them is more time consuming than it really should be.

Closing them involves holding down an app button until the delete icon appears, at which point you can pull the icon from the list.

Having lots of apps does appear to have an effect on things such as battery life, and sometimes you'll just need an app to restart, so you may find yourself in here more than you expect.

The other downside to multitasking is that the individual apps themselves need to be updated in order to take advantage of the new feature.

Apps that are practically begging for mutlitasking, such as Skype and its free internet-based calling system, have yet to be updated, meaning you can't take calls while, say, checking your email.

Everyime you leave the app, and then go back in later, you have to wait to be signed in. And this is how it will be until Skype release a fresh update.

Emails with the same participants and subjects are now grouped into 'threads' in your inbox. Simply click the thread, and the full thread will spool out for you to read.

The end result is something more along the lines of reading a conversation, as opposed to just reading through a swathe of isolated emails. And if nothing else, it helps keep your inbox from becoming to cluttered.

Search has gotten a bit of a boost. Now you can enter search terms into Spotlight (used normally just for things on your phone), and opt to search online or on Wikipedia as well, directly from your phone search.

Have incomplete contact details for someone already in your phone, or want to find out more about something someone sent you in a text message? This offers a more elegant way to do that.

Having said that, all this Spotlight upgrade does in the end is open Safari for you. Opening your browser and typing a search term into Safari is replaced by flicking to Spotlight and entering the term there, before hitting the 'Search Web' button.

It's only genuinely useful if you often find yourself Googling things you get sent in your SMS messages, or if you wish to find out more about a particular application you own, for example.

You also have the option of picking your Safari search engine. Google's still in there, but Bing and Yahoo also join the party.

While it seems that most people opt for Google for general search, let alone search on their iPhones, it's always nice to have the option.

We think it's more about Apple trying to move away from using Google products in their phones, but then that's just us.

Having a sprawling mass of apps on your phone?  Folders is your clean up tool, allowing you to add up to 9 apps to any one folder..

It also helps keep all those apps more organised, allowing you to place apps together in broad category types.

If you want to move an application else where, you just drag and drop it outside the folder, or you can also hit the X button to remove the folder entirely.

It's actually quite good at working out names for your folders, according to what type of applications you've placed together.

Games, for example, is an obviously easy one for your phone to guess, but the fact that it does it at all is certainly nice.

If you're sorting methods are a little more out-there, on the other hand, you can simply name the folders yourself.