Does iphone 4 cases fit the 4s?

For valentines I thought it would be cute to buy me & my boyfriend matching cases he gets half a heart and i get the other half when we put our phones together it'll be a complete heart anyways i got it on ebay it should be coming in a few days but I have the 4s he has the 4 will that be a problem? Btw thats not all his valentines day gift lol

How to get your iPhone to sync?

I have an iPhone 4S and it won't sync to my computer. I tried to, but some of the music I have on my iPhone won't sync to my computer.Am I doing something wrong?

How to use the fertility tab on the Pink Pad app for iPhone?

On the Pink Pad App for iPhones, there's a Fertility tab, and there's a lot of options and it's very complicated and I'm not sure what some things mean. Could someone explain the following:

(These are the selections and the available answers it gives you to choose from)
Ovulated today: (you just click the button if you have I guess?)
Cervical Mucus & Observations: Dry - Sticky - Creamy - Watery - Egg White
Position: Low - Medium - High
Firmness: Firm - Medium - Soft
Opening: Closed - Medium - Open
Ovulation Kit: Negative - Positive
Fertility Kit: Low - High - Peak
Ferning: None - Partial - Full

So if someone could explain what these options and selections mean I would appreciate it!

Remove Watermarks in CamWowPro App?

I have the free version of the CamWowPro App for my iPhone. I've used it to take some pictures but the Watermark comes out in every picture. I was wondering if I buy the full version of the App to remove it, Will it also remove the Watermark from pictures I already have?

IPhone 5 Won't Show Up In My Computer?

I'm trying to get photos From my iPhone 5 onto my computer but it won't show up where it says like "C Drive" and all that. It shows up in iTunes but the drivers didn't install correctly. 4 Stars for best answer.

Added (1). 5 Stars not 4 for best answer.

Laptop won't pick up my home wi-fi anymore

My laptop (Sony) used to pick up the wi-fi in my apartment fine and a few days ago it just stopped. It says it's connected with "limited connectivity" but the Internet still doesn't work when I try to open a webpage. It picks up wi-fi in other places just fine, but just won't work in my apartment. My roommates' laptops have no problem connecting, and neither does my iPhone.
(it is set to automatically pick up IP address).