A few general questions

[NeXTphone5]

I want to jailbreak my iPhone 5 and have a few questions.

If I un jailbreak and need care service is there a jailbreak watermark?
Will it mess with iCloud and things like that?
Will it use cellular data?

 

[Jmills87]

1. If you restore a stock firmware, there is absolutely no way for Apple or anyone else to tell that it was ever jailbroken

2. No, a jailbroken phone functions exactly like a stock phone, just with more functionality.

3. Jailbreaking itself does not use any data whatsoever, it is all done through your computer. However, if you install 3rd party apps/tweaks without being connected to Wi-Fi, that will use your cellular data.