Iphone experts? Come hither?

When I got my iphone i synced it to my desktop and added all the music i wanted to on there with no problem. I recently just got a new laptop and I would prefer to make that computer my main one and I want to use it to house all of my music instead of my old one. I tried to use my new computer to add music onto my phone, but it wouldnt let me because its still synced to my old computer. So when I try to sync my music with my new computer it asks if I want to erase this phone and sync it with my new itunes library. It says it will replace the contents of my iphone with the contents of my new itunes library. So i'm not sure what that means. I'm honestly okay with it deleting all of the current music on my phone, so I can start fresh. But I don't want it to delete everything on my phone? I'm only okay with it deleting the music i have on my phone. What will happen if I agree to erase and sync my phone?

"You have heard that it was said, 'You shall love your neighbor and hate your enemy.' But I say to you, Love your enemies and pray for those who persecute you, so that you may be sons of your Father who is in heaven; for he makes his sun rise on the evil and on the good, and sends rain on the just and on the unjust. For if you love those who love you, what reward have you? Do not even the tax collectors do the same? And if you salute only your brethren, what more are you doing than others? Do not even the Gentiles do the same? You, therefore, must be perfect, as your heavenly Father is perfect.

  • Why won't the White House security experts set President Trump up with iPhones using the Signal app? In this NY Times article they say the Presidents iPhone calls to his friends are not secure and the Chinese and maybe the Russians are monitoring them. Why don't the security experts install the Signal app on the President's phone, and tell his friends how to install it on their phones and then ask them to call using Signal?
  • TECH EXPERTS OR IPHONE EXPERTS My volume on my iphone 4s has disappeared and now its getting in the way of everything i do on my phone. When i pull up the control center, volume bar missing, when i use the side buttons, the little notches are gone. Its almost as if its docked however it isn't… Please help
  • Picture editing experts: How do I edit a picture like this? I'm looking for a program or editing software (or iPhone app) to edit a picture like these two. And if you guys do know the program, do you also know what individual settings it takes to edit like this? Like sharpness, etc.
  • PHONE EXPERTS OR BESTBUY WORKERS Ok so 2 years ago I got a new iphone 6s at Bestbuy and there was a deal where I can get it replaced after 2 years for free but like I have alot of stuff on my phone so how does it work like if I get it replaced do I lose everything on my phone?