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.

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