iOS 10.3.1 jailbreak almost ready

 http://www.iclarified.com/60190/pangu-demos-jailbreak-of-ios-1031-on-iphone-7-video

iOS 4 pdf vulnerability

 Another reason to jailbreak

If your iPhone or iPad is free from apple you can protect yourself against the PDF vulnerability.
Here is more info:
http://www.iphonehacks.com/2011/07/insta…ility.html

The other option is not to open PDF files from untrusted sources and wait for apple to fix it.

Free your iPhone from Apple

 good links to start:

http://blog.iphone-dev.org/
http://www.iphonehacks.com/
http://iclarified.com/tutorials/iphone/index.php

Make sure to read carefuly if you need your phone to be unlocked and used on different cell provider beside ATT.

WiFiFoFum

 iPhone wifi stumbler tool for detecting and troubleshooting wifi networks.

Unfortunately banned in the apple store luckily it is available on cydia.

http://www.iphonehacks.com/2010/03/wifi-…-free.html