It won't delete anything, and yes, you can still sync with iTunes and download from the app store. Bear in mind, Apple is now calling jailbreaking illegal (whether it is or not is debatable), and it may very well void your warranty. That being said, jailbreaking will open up your phone to do what it is capable of doing, such as video recording, turn by turn gps, mms, ringtone and background customization, theme changes, etc. Like everyone said, search this forum and read everything you can find on jailbreaking before making the decision.
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I'm an at&t wireless employee! If you have any questions, or would rather not call customer service, here is my contact information:
Blake Jackson
bj313c@att.com - company email
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