What error can happen if you try to jailbreak your iphone 4 with ios 7.1.2?

What error can happen if you try to jailbreak your iphone 4 with ios 7.1.2? - 1

It'll make your Iphone 4 very slow and sometimes apps might not launch (ex. When you tap the app its gonna pop up and then take you back to the home screen.)

Well, there are many possibilities. Generally, jailbreaking is quite safe. Now, there are times when something goes wrong. For example, I jailbroke my iPod touch 4 on iOS 5.1.1 a few years ago, and it deleted all of my apps, even the ones that you can't delete, like Safari, Stocks, etc.

If for some reason this happens to you, you can just restore your iPhone in iTunes and try again.

Now, before you do anything, backup your phone. In the case that you need to restore, a backup is crucial if you want to keep your important data. As a matter of fact, backup often, at the very least, every other week, but try to aim for every week.

No error.