Bought an iphone. Still getting their iMessages

So I bought this iphone on eBay from some kids mother. And it is logged out of his iCloud and iTunes and I'm not sure why I'm still getting the iMessages. Is it the sim they left in it? I can't lie it's sort of interesting to read the txt this person is sending… Ahh. Need a life lol

Can my sprint iPhone be used with Tmobile?

I went into Tmobile today to ask about changing my plan, I currently have Sprint and am paying month to month as my contract already ended. I was told however I wouldn't be able to use my iPhone from sprint because it doesn't use sim cards. However someone else told me that if i take my iPhone to sprint after canceling my service, they can unlock the phone. Would i be able to use my iPhone with tmobile once its unlocked?

Are you allowed to sell a donate to me on eBay?

I legit saw somone selling "iPhone 5s for me donations" and it was up to 150$ ! Is that even allowed! The descrprion was "I could never afford the finer things. The winning bid is how much that gets donated to me to guy an iphone"

How to turn off data on iphone?

I'm going abroad and i need to know how to turn off data as the hotel will have Wi-Fi but i don't want it to use it from my contract and then come back with a big bill

How to put my music on my iphone?

I have been told to install itunes on my phone. It is NOT in the app store. I have been told that it should already been on my phone. It is NOT. I have been told to install it on my computer but no other word on what to do from there. Does Apple really make things this difficult? I really wish I had gotten a better phone. Like one that anyone makes other than Apple. I have not liked this since I got it about a year and a half ago.

Sound not working on iPhone apps, but still working on videos & music?

A while ago, I had my iPhone screen cracked and got it fixed by a local repairman. Ever since then, however (about 3 or 4 weeks ago), the sound has not been working right.

Not one of my apps has the sound working without headphones. No matter what I tried - turning up the phone's volume to max, turning the app's volume to max, turning up the "Music" volume, etc.) it doesn't work unless I have my headphones in. If I have the headphones in, it works fine, but without them, it doesn't work at all.

That's only on apps. All my music DOES have working sound, as does everything online and any movies I rent.

Can anyone figure out why
(A) Only the apps have no sound; all music, videos, etc. Do have sound
(B) Why it only works with headphones in
(C) (most important of all) How I can fix this?

What is the price of iPhone 5s in Nepal? - 1

I want to know the exact price of the apple iPhone 5s in Nepal for all the available memories and whether the price differs from color. Pleads make you answer as detailed as possible.