IPhone 4 won't vibrate in mute mode

So my i have an iPhone 4 and i've had it for about a year now. But like 4 or 5 months ago, i noticed that my phone wasn't vibrating like it used to. For example, i'd switch the mute button on and it says that it's on and the phone vibrates a little when i do that. But i realized that it only vibrated when i text messages and not phone calls. And i usually have my phone on mute, so i'm missing calls like crazy only because it won't alert me and vibrate. For messages its fine. & i've tried the whole settings>sounds>vibrate>vibrate on silent mode thing but it still won't happen. I set my phone back to its factory settings and it still won't work. So i'm not sure what to do and how to fix it. Is there any way or tricks to get it to vibrate when it rings?
please let me know As soon as possible cause i think my warranty expires this week.

How to change iphone app color

So my friend just just changed her iphone app colors to the picture thats i put in this. She won't tell me how she did it, but i really want to do this so does anyone know how to do this to an iphone 4s?

What happens if my teacher breaks my iPhone?

I was NOT being reprimanded, I had it on my desk (which we're allowed to do) and he saw my case and because he liked it, he decided to pick it up and dropped my iPhone causing it to shatter. Is he responsible for replacing it? I was just at a loss of words at that moment lol

Should I bring my iPhone overseas?

I'm in the Air Force and I'm going to Turkey in July for 15 months and I don't know if I should bring my iPhone or buy a phone over there or what.

Where can I repair my iPhone 5?

I live in the UK. England. I have had the phone since it came out late September last year. The charger started to not work and then it broke so I got another one, this time not an apple one. That broke too so I used an adapter which also broke about a month later. I would just put it into the phone and it would do nothing. I got another adapter and it didn't work either. I just let my phone die out and it's been dead for a few days now. I took it into apple and they said they would give me a new one but I really don't want another one I have so much stuff on there that I want to keep and I haven't backed one thing onto iCloud. I want all my texts and call records back too. It sound stupid nit wanting a new phone but i love the one i have now even though its exactly the same. I know it's not the dodgy chargers because the people at apple tried and it didn't work. I often take my phone in the shower and I think the steam might have messed it up or something. Does any one know where I can fix it? Or if I possibly can? Do I just have to get a new one?

CHEAP iPhone 4 or 4s? Unlocked or tmobile?

Well basically i don't have any money but i really want an iPhone atm i have a blackberry but like al my friends have gone of bbm so its boring so i want to sell the blackberry i also have an iPod so i might swell sell that and the wii do you think that will be enough
blackberry bold 9700 white new clean
iPod touch white 8gb engraved tho:/
wii white normal
dsi? Black

Added (1). Thats 305 --- i said CHEAP

A movie won't show up as a movie on ITunes?

A movie I want on my IPhone 3 will not show up on the movie section on devices. It will show up as a movie on my library though. Why is this and how do you put the movie onto my IPhone?