Yes, but only iphones, you may be able to hack another mobile phone but the term of 'Jailbreaking' is just for Iphones and Ipod touches.
No, jailbroken iPhones are okay with SquareTrade, as long as they are not physically altered and can be reset with a software restore.
yes they are
Jailbreaking can only be done for iPod Touches and iPhones. No other phone has the ability to be jailbroken. For an iPhone, you need to download a software from the internet to jailbreak it.
No, that is not true. Jail broken iPhones still have access to the Apple app store. The only thing it will do is break your Apple warranty on your iPhone.
"Jailbreaking" is for iPhones. You can root an xperia play though and install custom kernels or firmware on it. Sony Ericsson has actually released instructions on how to unlock the bootloader, but doing so still voids the warranty.
You may think it is worth the upgrade to an iPhone if you have an Xperia z; many people like the iPhones.
obviously, as you cannot get them w/o jailbreaking
Yes, "the courts have long recognized that copying software while reverse engineering is a fair use when done for purposes of fostering interoperability with independently created software." http://www.eff.org/deeplinks/2009/02/apple-says-jailbreaking-illegal Jailbreaking does not load a torrent app or allow installation of pirated apps. Those services are a separate and illegal venture that are commonly linked with jailbreaking, thus giving jailbreak a bad name.
Yes, jailbreaking does void the warranty.
"Jailbreaking" is another word hacking. Therefore you void your warranty but you get cydia, a jailbreaking software. Jailbreaking does have it advantages and Disadvantages. But if you want to send it to apple to repair it you have to restore it to factory settings to get back your warranty.
Yes; not jailbreaking it. If you mean a way to do the same thing as jailbreaking without actually doing so, there is no current way to do so.