Search people in Facebook iPhone app?

Ever since the recent FB app update there's no "everyone" tab under the friends search area. Anyone know how to search for people who are not your friends on the FB app?

If you restore your iPhone 4 from the phone, will it permanently erase eveything?

I'm selling my iPhone 4, and I want all my personal information gone off there, and I don't want anyone else to be able to access it in the future. I watched a video on YouTube that said you can wipe all your information off you iPhone 4 by going into Settings > General > Reset > Erase All Content and Settings. Will doing so permanently reset my iPhone 4 to factory settings, and wipe off all of my pictures, videos, call history, apps, internet history, ect, with no chance of anyone getting to it? If not, how can I completely and permanently reset my iPhone 4? Thanks.

Added (1). Here is the link to the video in case you need to see it:

I need the perfect iphone case

I have s white verizon iphone 4s and currentyl i have a cheap gameboy case but if i drop my phone i feel like it is not really protected! I need a new one but the problem inhave with protective cases isnthe headphone jack fornsome reason the cases do not allow enough space for larger headphone jacks making itnimpossible to play my music on my mom's car through her casset cord! I was looking at otterbox cases but i don't know about the headphone jack and it seems i'm the only person with this problem!

My iphone is frozen, how do i fix it?

So my iphone is frozen on the call ended screen and i can't turn it off because the lock button is broken and it won't do anything if a press it. I have tried pressing the home button repeatedly and it won't go back. How can i fix this? (btw my iphone is the 3gs)