IPhone 4 is taking a long time to turn on, its been over a year?

I'm trying to turn on my iPhone 4 and it only show the red battery thing but it isn't turning full on yet. It has been over a year since I last charged it. How long do you think it will take and is there any possible way to speed it up? Maybe by plugging it into a macbook air?

Can I download music to iPhone via iCloud?

This seems so reasonable but yet I don't even know if it's possible. It should be possible. No the music was bought elsewhere, legal. So I don't know if I can go to my iPods backup and download the music?

My iPhone 6s takes about 30 sec to ring when I call. Why?

My iPhone 6s is brand new my carrier is t-mobile, I make calls and it takes about 20-30 seconds to ring and connect. The same thing when someone calls me I press the green button and it takes about 20 seconds of silence before I can here the voice of the person IIm calling. Please help. Is there anyway to fix my problem. Is it the phone or the carrier. Did I damage it already. Please answer this is emergency

IPhone 6s speaker not working?

Okay so I have an iPhone 6s today the speaker quit working. The phone seems to think that my headphones are always plugged in even though they are not in. I don't know how to fix this my mic is working so people can hear me if they call but I can't hear them unless I stick my headphones in. How do I fix this or do I just need to take it to a service place?