Is there something wrong with this iphone 4s? - 1

I got given the iphone 4s from a family member who no longer needed it, before the phone was on contract (vodafone). I've put a pay as you go Vodafone sim in and I've tried to top up but whenever I try to ring it says call failed? I couldn't get onto the app store but when I finally did I needed to upgrade but everything is in the family members name, like his email, etc.

If anyone can talk me through how to set it up or if anythings wrong with it, it'd be appreciated. Sorry if I don't make sense never used an iPhone before.

How to use an external mic as default on ASUS laptop?

So I'm using an ASUS A42J laptop. And it's microphone is already busted. Whenever I use it, the people I talk to can't hear me. Well, they could hear me at first, but then they'll be hearing something with a buzzing sound and next thing they hear is my voice drowning until it reaches complete silence and not hear a thing anymore. However, I have a headset, complete with earphones and a microphone. It's the one used for the iPhone, so it has no on/off switch whatsoever. How can I use the headset's mic as my default? I believe that the ASUS laptop has only one jock, but as I've mentioned, the headset has both the earphones and mic. So yeah, the laptop's built in mic isn't working anymore. So I have to make use of an external mic.

Have I lost weight? (Losing 10lbs in a week)?

I'm really confused lately. I recently downloaded the MyFitnessPal APP on my iPhone and have been trying very hard to maintain a healthier diet. My starting weight was 294, and my measurements were as follows: waist 45, hips 47, and neck 17. I started using the diet last Saturday. The program suggested my body burns 2750 calories a day naturally, without extra exercise and they said in order to lose 2lbs in a week, I'd have to consume 2030 calories a day. I viewed that as a reasonable goal.

Fast forward to now, I just weighed myself after getting home from school. I now weigh 283.4 in under a week. I'm wondering is this a) real? B) possible? And c) unhealthy? I used to be a huge soda drinker and cut back on mostly all sodas this past week. Stayed away from a lot of carbs. Rarely exercised, stayed sedentary for most of this past week, but a lot of my family members are saying it looks like I've lost weight. Also, my measurements didn't change a bit.

Am I dreaming or is it possible I actually lost 10lbs in 1 single week?

Why is my iphone from sprint is so slow?

I decided to jailbreak my iphone, but then i restored it for accident and the version was 6.0 and it started to be really slow. Why is that? Do i need to jailbreak it again to be fast? It was a sprint with a 3G network

Can't find my iTunes Library?

About a month ago I got an iPhone and I tried to sync it to the same iTunes I have for my iPod and have had for years now. It had all my music and videos on it. When I plugged in my phone something popped up asking me something, I can't remember. But when I clicked it it opened up iTunes 1. I don"t know why the 1 is there, but for whatever reason it got rid of regular iTunes and I can't find it on my computer or within iTunes itself. So did all of my library get deleted or is there a way I can find it on my computer?