Why does my iPhone turn the sound on and off itself?

It started about an hour ago and it doesn't stop? As soon as it turn it off it turns it on again. And if I try to turn it on or off myself it doesn't work. I've tried restarting it and having it off for a while but it's not working. I just got home from the beach so maybe I got some sand stuck in the volume button thing?

How long should an iPhone 6 battery life last? - 1

My battery usage at 5 hours always dies.
I go on it continuously for 5 hours watching videos on YouTube etc and it dies after 5 hours, I turned off anything that makes it drain battery and I lowered the brightness. But it dies fast is this normal?

Looking to become an Apple Technician?

I will be turning 18 at the end of this month and would like to get some information on becoming an Apple Technician. I have been refurbishing iPhone's and iPod's since i was about 14 years old so I have some experience but wouldn't consider myself a professional. Could anyone guide me as to what training I will need in order to become a technician? I would like to open up my own shop one day and repair iOS products. Also if I'm not even looking in the right direction, please guide me where to go. Any and all help is greatly appreciated.

Under 18, Canadian Citizen, Want To Work In The USA?

I was born in Canada, and moved to the US 2 years ago. I'm 15, and I don't mind waiting until I'm 16 to get a job. I moved because my dad got a job at a super big computer company and is an IT here in the states. I recently broke my laptop screen and my iPhone got water damage, and I don't want to drain my dads wallet since he already works hard to provide me with all these things that I broke to begin with. I don't have a social security number, but I do have a Canadian TIN number. I've thankfully been gifted with being tech savvy and know quite a bit about apple products. I wanted to work as a genius bar specialist but I'm willing to work anywhere. Can I do so without being an American Citizen?

Does a 16gb iPhone 6 have enough space?

I would have probably 800-900 pictures, around 15 apps(no games, just social media type), MAYBE 300-400 songs but I mostly use pandora, and all my texts and emails and stuff. Is that enough storage or would I need 64gb?