Hey all I am new to the whole JB thing so a few quick questions to those far smarter... 1. If I want to teather my unlimited plan, is there a free app to download to enable this and does it create a hotspot? 2. What are the top 5-6 best free JB apps I should consider? 3. I have 2 iPhone 4s, one JB and one is not. If I change the SIM in between both so AT&T or Apple care? One is the IP4 on my account, and the second is an older IP4 with a chipped screen.