If I Reset My iPhone What Will Happen?

I Just Bought An iPhone4. My Dad wanted to Install Cydia Really Badly So I let him. At the end he didn't know how to do it so when I got it back My Safari Wouldn't Work Anymore. So I Was Wondering If I Reset it to Manufactuar Settings Will I Have to Activate My Phone Again? I'm on Prepaid So I don't Want to Have to Pay Again. I Don't Care So Much About Loosing My Contacts&Apps. I'm Just Worried About The Activation

To get rid of this tethered jailbreak your father installed simply just update to the latest firmware. If you are on the latest firmware trying doing a hard reset, which means you will have to configure everything again including activating.

DON't RESET IT. You need to hold the power button and the home button for a minute and it will be back to normal you got to hold them at the same time and don't let go until it turns on

  • 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 would happen if i changed my sim card from my iphone 4s into an iphone 4? I just switched an active sim card from my active iphone 4s into an unactive iphone 4. Now my iphone 4 is active and programed with my plan. I just want to know if AT&T (my company) is going to charge me more because i switched the sim cards. And note that i did this all by myself.
  • What will happen if I try to upgrade my jailbroken iPhone 4S to an iPhone 5? I recentley jailbroke my iPhone 4S and after a while I decided to upgrade to an iPhone 5. What will happen if I take my phone to Verizon for a new iPhone 5? Will they say no because its jailbroken? Please answer as soon as you can. It would help if you have had experience.
  • What will happen if I reset my iphone? I was going to completely reset my iphone to reset all content and settings. I was wondering if I do this will my network with my phone carrier be reset as well? What I mean is if I reset my iphone completely will my network with my phone carrier (Sprint) still work normally or would I have to go the sprint store and have them reactivate it?