How to put music on my iphone from other people's computers?

I can't transfer music onto my iphone except from my own computer. I have the setting "manually manage" music set on my phone on my computer, but when I go to another computer the setting is off. I don't know why. So it's preventing me from putting music onto my iphone. Please help, I asked this question already and they said "it works bro" and that did not help at all.

My iPhone 4 started randomly making beeping noises?

I just was sitting in the car and my mom said, "What's that beeping noise?" I listened closely and couldn't make it out. Later we heard it and I put my ear up to my only working speaker. I heard it beeping. I saw the silent button the side of my phone was pulled to the left so you could see the orange mark. I pulled it forward and I thought I still could hear it… Help!

IPhone (AT&T) without data plan method: does this work?

I read this article(?): http://www.consumerist.com/2013/01/16/heres-how-people-have-successfully-used-an-iphone-on-att-with-no-data-plan/

It stated that this is a method for using an iPhone without a data plan:
1) Put Feature (dumb) phone on account, and put SIM in feature phone
2) Call AT&T and have them put data block on this account
3) Wait a day or so and put SIM back in iPhone
4) Most folks that do this never get the data plan added to their account.
5) If you need to call AT&T back, simply put the SIM back into the feature (dumb) phone before calling them, and turn it on so it registers.

Has anyone tried this?

Will apple replace my iphone 4s? - 2

I've had my iphone for over a year now and it's been great up until this morning. I woke up after it had spent the night on charge to find it on 1%! I've tried multiple power points, charging usb's and nothing!

Once it dies, it'll charge up enough to turn on but once it starts up it won't continue charge?
I refuse to upgrade my phone after multiple problems with my phone company and want to end my contract next year, reluctantly want to start a whole new contract to pay it off!
Will apple replace my iphone?

Why do the apps on my iPhone keep crashing?

Almost every app on my iphone 4 crashes when I open them, even the apple apps. My phone isn't receiving any text messages that people send me either. I've tried restarting my phone multiple times & nothing's working. Can someone please help me with a solution to fix this?

Why is galaxy better than iphone?

I think galaxy has more features, but isn't the better device because I seemed to have gotten things done much slowly on it compared to iphone.