How old should I be to get an iPhone 6s?

How old should I be to get an iPhone 6s? - 1

Added (1). I'm 10 years old. I'm pretty much a straight A's student. I got al 4's on the state exam (highest level possible) I'm very responsible. I also go to afterschool. Do you think I need a phone for communication during school in case of emergencies? Am I too young?

Is the iPhone 5c worth buying now?

IIm looking to buy a new phone, is the iPhone 5C worth buying and using in 2016? IIm planning to use it for 18 months to 2 years, will it get ios10? Either that or the nexus 6

What do you do when you've finished using iPhone apps?

I got a new iPhone 6S a couple of weeks ago (my first iPhone), and when I first got it I used to just close apps by clicking the home button. However I just found out that if I double-click the home button I can close apps by sliding them towards the top of the screen. So now I'm not sure what is the best way to do it, what difference does it make (if any)? What does everyone else do?

I have a problem charging my iPhone 4s?

Now here is my qestion what is hapening to my device i have for a year or so and didn't even had this problem before but a couple days earlier i saw the problem i had a big struggle charging my iPhone 4s if i want to do it i need to either blow on the charger and the port or plug/unplug it until i hear the charging gingle i had cleaned the port but to no avail. I haven't tried with other chargers but my iPhone is comepletly functional upgraded to the latest ios (iOS 9) and i started having this problem a couple days ago is there any solution to this or just sell my phone and buy a new one? (And no i don't think my main motherboard is fried) i have tried blowing on the usb but that doesn't work.

Can I connect two separate speaker systems?

Can I connect two separate speaker systems? - 1

Added (1). One speaker system is a home audio system connected to my blu-ray player which has an input aux cord for iPods, and I also have a separate speaker system that I want to link up to the other side of my house. This system also has an aux and rca input system, can I use an cord that links the two aux cords into a single input and then use that from my iphone/laptop? Or is it more complicated. They have their own power systems so its not an electrical issue.

Added (2). Another update to this question, my home audio system is a multiple speaker surround sound setup that is very nice. I have another powered speaker system with 4 speaker units that I have set up with a single auxiliary cord input from my laptop. My question is if it is as easy as getting an auxiliary cord splitter to link the audio between these two systems.