IPhone won't record sound? But Siri works?

Okay so I have the iPhone 5 it's getting kinda old and worn out I need to replace it soon but anyways I tried recording a video to put on Instagram and their was no sound? I tried recording a video just in my camera roll still no sound even in snap chats? I find it odd because I can still talk to Siri and I can still talk on the phone just when I record videos it won't pick up sound? Any idea why?

My Aunt gave me her old iPhone and

Alright so basically my aunt upgraded her phone to the new Galaxy and she gave me her old iPhone, which is pretty chill. I've been using it to play some games and text a couple friends when there's Wi-Fi available. I'm pretty much using it as an iPod and I don't plan to use it as an actual phone.

However, we share the same number which causes me to receive the texts that go to her Galaxy but not vice versa.

SO basically, is there anyway I won't receive her texts and can I make her old iPhone MINE.

Thanks for reading and post any useful information.

Should i get iPhone 5 or iPhone5C?

Somebody is offering me a phone iPhone 5 white and iPhone 5C blue color. Both in mint condition. I heard that tech wise they are both the same but then again which one is better? I can only choose one.

Need someone to make a website for me?

I have, what I believe is an extremely good idea for a website. I absolutely can't make it myself. I have made websites before for me and other people for different things. I can't make this myself because it is too interactive with other website users. I need to find someone to make my idea but I can completely trust not to steal it. I once invented an app for the iPhone and sent it in to a place that said they would develop it and give me 20% of profits. The app ended up becoming top 50 paid apps on the app store and they deny that I ever gave them the idea and didn't pay me. That is why I'm a little skeptical of just handing out my ideas. Any ideas help!

Iphone 4 or 4s, which is better?

Ihave an iphone3gs right now and its so played out and old.
( it doesn't even have a front camera -.- )
My dad is finally going to get me an iphone 4 but is the iphone 4s any different or better? Do you think the iphone 4 is also played out, since the iphone 5s is already the newest of all?

Best format and codec to use in my situation?

I want to send my friend an SD card with videos I took on my iPhone. Unfortunately, he doesn't have access to a computer at all right now, which means he needs to watch the videos on his point & shoot camera. I don't know exactly what model or brand, but it's one of those really basic $100 ones. It shoots video, but it doesn't shoot HD video or anything, only 480p.

I'm going to put the iPhone videos into Premiere Pro and I want to export them to the right file extension and codec for a regular point & shoot camera to read them. What is your best guess here?

Unlocked or contract IPhone 5S?

Okay so I have a samsung galaxy s3 and I got it for my birthday last year. I have a 2 year contract with Verizon but I want to get an iPhone 5S now. Do I have to wait till my birthday next year or can I get one now? If I get one now, will I have to pay more than 200$? Or can I still pay the price on contract?