Will syncing my iphone delete everything?

So basically the first time I put music on this iPhone 5 was at my friends house. I tried doing it on my laptop today and realized if I do I'll lose everything I have on here. I'm just a little confused? Does this mean ill just lose the music or all the apps and photos I have?! And the other question is well is there anyway I can back up my phone on my computer and after syncing it putting everything back on?

Iphone users: opinion on IOS7?

So personally I think it is ugly. It looks too cartoonified and it is trying too hard to look like android. It no longer has the "iPhone look" and I'm pretty disappointed.

Your opinions?

I'm getting the iphone 4s tomorow

Hi, i'm getting the iphone 4s tomorrow and i was wondering if you could tell me if i could put the sim i have used for my blackberry into the iphone4s or does it need to be different

IPhone prices and contracts?

I was thinking about getting an iPhone for Christmas, from the 4s, 5, 5c, and 5s. With a contract for Verizon, how much would each cost for unlimited calling, texting and data. Also, how much would it cost to get them prepaid and for each month?

How to load my old Clash of Clans Village?

Everytime I logged into my clash of clans account it would ask me if I wanted to load another village with a town hall level 1. I was at town hall level 7 and one day I accidentally clicked yes. I'm signed into game center on both my iphone and ipad, and on both devices it is the new town hall level 1. However if I search my old clan that I was in, I can still view my town hall level 7 village. How do I switch back to the town hall level 7 village instead of having the new village? Please help! I spent a lot of time building the old village and don't want to have to start over.

Why Won't My Notifications Show Up?

Recently, I updated my iPhone to the new iOS 7 system.
Every thing seems to be working fine, but for some reason, my notification window or center won't show up. I can't seem to see whether or not I received a message from my apps, such as Facebook, Twitter, Kik, Instagram, etc.

I did check my notification settings and every thing is switched to the "ON" setting, but I still don't know why my notifications won't show up when I receive a message; I continue to go to the apps to see I received messages, but I never received an alert for them.

Do you guys know what I can do to fix it? That way notifications will show up when my phone is locked or when I scroll down the notification center?

Can i find my stolen iphone?

Somebody stole my iPhone at school and I was wondering how I can track it, if my SIM card was taken out how can I track this

Iphone: sound only works when i plug in headphones?

I can hear people when i talk on the phone, i can hear my alarms, but other then that… I can't hear music i play, or the keyboard clicks or videos unless i plug in my headphones… I've tried blowing in the headphone jack, i tried putting paperclips in it and fidget around. But nothing seems to get the sound back.