How to deactivate Facebook using iPhone?

I want to deactivate my Facebook due to personal issues. I don't have a regular computer. I use my iphone for everything. I know from a computer you go to account settings, security then click on the deactivate link but I can't find that on my iphone. It doesn't seem the same like using a regular computer.So, is there a way to deactivate from my iphone? If not, I'll just have to find a computer. I have tried the Facebook app and went to Facebook.com and I can't find the deactivate link.

Why won't my new IPhone 4S send texts?

I just got a new IPhone 4S because T-Mobile just got IPhones and I can't text people calling works fine (after fighting with T-Mobile to get it to work) but my text messages won't go through if anyone could help please do

How to setup purchased ringtone?

I just purchases a ringtone from the iTunes store on my iPhone 5.
How do I set it up as my default ringtone?
When I go to "Settings", "Sounds", "Ringtone", it just shows the default tones that come with the phone. It doesn't even show the ringtone I just purchased nor does it say anything about setting a custom tone.
How would I go about doing this?

My iphone 4s won't let me use Wi-Fi and my 3g services?

So i took out my battery cause it brooke and have it plugged into a wall so my iphone 4s says its 'searching" and never finds the bars i have my bill paid and everything also when i go to Wi-Fi it doesn't let me open it or close it please help me

Average iPhone 5 battery life?

So me and my friend both bought an iPhone 5 about 3 weeks ago, and his battery is better than mine… I have to charge it about 3 times a day(not even joking)… But he only chrages it 1 time a day. And my battery drains quickly and it gets really hot when it's charging. So I went to apple and complained and told them that I had a defective unit, a they tested my battery and told me that there's nothing wrong with it, they also told me that my avg standby time is 17 hours and refuses to fix it or exchanged one for me.So… What's the average standby time for iPhone 5 and what should I do?

And thanks.