What can you do with an iPad that you can't with an iPhone?

I already have an iPhone and a laptop, but I would still like to purchase an iPad. I'm trying to figure out if it would be useful to me, or if it would just end up not being used because of the other things I already have. I'd really appreciate it if some people who own an iPad could tell me what they do with it and if they find it useful! It would also be even more appreciated if you already have an iPhone and a laptop as well and you could tell me about things that you tend to use it for instead of using your other devices.

Ps. Please don't troll all over this, I do realize I don't NEED an iPad. If you're not going to be helpful, don't post anything.

Why my pictures show blur when I save on my iPhone?

I have tow Nikon cameras. The pictures taken by Nikon Coolpix S8100 are perfectly fine and I can save and view on the photo album on my iPhone, but for some reasons, the pictures taken with Nikon Coolpix S3000 becomes completely blur when I transfer them on to my iphone to save them there. I actually used to be able to save pics from the Nikon S3000 but all the sudden this weird situation happeed. I even tried to downsize the photo size but no luck. And when I check the sizes, the both pics taken with S8100 and S3000 are similar range anyways. Please help! Thank you,

Added (1). Thanks for your reply!

But when you say "quality" is it a size of the photo, do you mean?

All I know is that the size of pic is 2.70 MB and I took exactly same pic later with my other Nikon S8000 and the size and details when I checked are same as the other. I'm still puzzled!

Added (2). I just found out that it seems that my iphone could be the problem. Because I just sent the same pic to my friend and he was able to save and view it crystal clear on his iPhone. So what this supposed to mean?

How to get a different Color iPhone?

I follow Kendall and Kylie Jenner on Instagram and they post pictures of their iPhones, and they are Blue and Red, its almost like a whole new shell. It is not a case. I just want mine like theirs and price Is not a problem. I also want a variety of colors to choose from. I do not want to do it mysel either Thank you!

Can my iPhone 4 get a virus?

My iPhone seems to delete contacts by random, but more so the recently added ones. Can this be the effect of a virus? The Mac that I sync it to is extremely slow and we suspect it may have various viruses. If my phone does happen to have a virus, could it have come from the Mac?

No none option in itunes store.can't refresh my payment details?

I have an iphone here in pakistan. And i use to buy few apps through my visa card.buy sometimes apple would not accept my card details. Even though every things was correct. So i would select the "none" option in options and confirm. And then reenter the same card details and apple used to accept it. But now i don't find the none option for this workaround. I would appreciate alot if someone can help.

Added (1). My details are valid.

Transferring photos to iPhone 4s?

I'm getting an iPhone 4s for Christmas but I already have a iPod 4 so when I get my iPhone I know I can transfer all my apps but can I transfer my photos and how?!

Iphone 4 will not come on

Sunday my iphone stopped working. I tried charging it hooking it to the computer nothing would recongnize my phone. So monday afternoon i took it to the apple store and they said my battery had come loose. They fixed it and i went on home and it was working fine. I put my phone on the charger and slid it under my pillow and went to bed. I woke up tuesday morning and tried using my phone. It would not work AGAIN! So i freaked out again and took it to my computer to see if it would be recognized on the computer it did! So i clicked restore and had to rush to school and left it on there. At lunch i came home to check my phone and it says itunes could not restore iphone. And errror had accured so i re tried it and it let me try to recover it again. DOES ANYONE KNOW WHAT IS WRONG WITH MY IPHONE4? I have only had it Since May