What happens with iPhone reset?

My daughter won't give me her iPhone pass code. Knowing that she has things on their that could effect her life. I don't have the itunes she syncs it with. If I were to reset it or have apple reset it would everything on it disappear? Including messages and apps?

If you have it reset, it will remove All Data from the phone. Contacts, photos, messages, settings. EVERYTHING

  • Will the MAC address of my iPhone reset if I reset my iPhone to its factory settings over iTunes? I have jailbroken my device and used terminal to change my MAC address so that I could connect to school's Wi-Fi. But when I wanted to change it to its initial number, I typed in a wrong value and it just messed up my Wi-Fi, I can't connect to Wi-Fi anymore. Wonder if resetting to factory settings would help…
  • What happens when you reset your iphone? In settings, when i press reset all settings or iphone. Will these erase all my apps, photos, and videos from the screen? I'm trying to find a way to clear all the problems on my phone bc lately it says all my storage is full so i can't do anything, but its not full! I don't know how to fix this. Will reseting my phone help and how can i fix or reset it in settings so i won't lose anything
  • What happens when you reset your iphone? - 1 In settings when you reset your phone, what happens? I know that it will delete your apps, and music, and pictures and stuff like that but will it give me a new number? Do i have to take it to the apple store to get it working again? I'm going to reset my phone and i'm just wondering what will happen.
  • What happens when you reset data? Today I was on my phone and checked my data and it said I had 221MB used(I have AT&T and I have the 300 MB data plan) and ithad the option to reset the statistics. I have an iPhone 4S BTW. Now it has 0MB used and I don't wanna cut my data on because i don't know if it will charge my bill if I use it again. What's gonna happen? My phone bill is due on the 1st of October(I'm 16)