In today's world we all seem to use mobile data every single day. Whether we are just browsing the net, checking twitter, uploading pictures to facebook, streaming live video of Japanese TV (yes, yes, I know that's just me!) or using an instant messenger like Skype or Whatsapp.
Now a days however we get plenty of chances to log on to a Wi-fi network, be it our own in our own houses, one we have access to through our service provider or a general one in a restaurant, cafe or hotel. When you can get a Wi-Fi signal it's usually a better (read "faster" and "more stable") connection than you'd get using mobile data so it's advised to turn off your mobile data to save battery power whilst connected to Wi-fi.
With the Samsung Galaxy S2 (and various other Androids) there is actually 2 ways in which a user can turn off their mobile internet:
Method 1-If you drag down the notification bar and scroll across slightly you will get the option of "Mobile data" if you press on this and turn the light off this will turn off mobile data and save the battery. (For reference see above).
Method 2-Alternatively if you hold the power button you will get a "Device options" screen (see the picture to the right) which allows you to turn off "Date network mode" which is actually the same thing.
To turn it back on you can just do every thing again but make sure the light is "on" in the notification panel or the option says "activated".
For most of he time the notification bar method is the easiest and quickest, but for the few occasions where it may be difficult to access the bar, the "Device options" method may be an easier alternative.
Modern day phones are vastly different to the devices that we had in our pockets just 5 or 6 years ago. They've suddenly gone from devices chat and text to full blown mini-computers capable of being used for so many things that's it's pointless to list all the tasks they can do.
With the advancement of what phones can do we've also got to the point of having phones that can do more things than we'll ever need to know about. This is especially true with the recent "super" Androids that have really moved the goal posts with their functionality and uses that many of us will never even know about (honestly if we did a guide about every function on the phone we'd have to spend a month just playing with the handset).
A lot of these new functions can be found in the "notification bar" of the Samsung Galaxy S4 if you drag the bar down and scroll to the right including things like "Air View" and "Air Gesture".
To change the order of the icons you need to pull the bar down (see picture above) then click the icon in the top right corner (the one with 3 little squares and 2 arrows). After pressing that icon your screen will change to the one opposite with all the icons on. From this screen you can turn on any of the functions (and access their individual settings) though what you need to do to reposition them is to click the little pencil in the corner and go on to the screen below.
From this screen you merely drag them in to the order you want them. Starting with the first icon (top right) to the 20th icon (bottom right).
So for example if you want quick access to your NFC or Wi-Fi hotspot settings you can drag them along and perhaps replace Bluetooth or Screen Rotation (2 I don't tend to use personally) to give you quicker access.
Of course it's just as easy as doing the same steps to set up the phone back to the way it already was so feel free to have a play and find the settings that best suit you.
Note-At the moment it doesn't seem possible to actually delete any icons from the "notification panel" though I'd assume that this will be dealt with in a future update.
The brand new Samsung Galaxy S4, a phone that was released just a few short weeks ago may well be the next stage in the evolution of the Samsung Galaxy brand of phones but it's also a phone that is true to it's Samsung roots. With this in mind this tip is something many "Samsung fans" may already know, but for knew users this could be help.
A screenshot, as with a computer just takes a shot of your screen exactly as it is as that time, this allows you to show off your homescreens or do guides (like this!) or to troubleshoot an issue.
To take a screenshot on your new Samsung Galaxy S4 you need to go to whatever screen you want a shot of, for the sake of this article I'm using a homescreen (as you can see in the pictures). 
When you're on the screen you want you need to press both the "home" and the "lock" buttons at the same time. With in seconds of doing it you should see a message at the top of your screen saying "Saving Screenshot" (see picture).
If this has worked then you'll find the image stored on your phone in a folder called "Screenshots" which should it's self be in a folder called "Pictures".
You'll see this type of screenshots in almost every guide we do on this site due to how how clearly they show the details of the screens and we advise that if you have problems with your Samsung Galaxy S4 you take a screenshot of the issue and email us the picture and we'll try to solve the issue.
