What are the difference's between iphones?

What's the difference between iphone 4s, 4c, 5, 5s,5c, and all that other stuff?
Honestly i don't understand the upgrades.

Added (1). differences as in the main difference.

Why does my iphone 5s battery drain quickly?

I got my new iphone 5s about 3 weeks ago and started to realize that the battery drains fast. I started closing opened tabs, reducedthe screens brightness to 20% or even less and i also downloaded this app battery doctor but all this doesn't seem to change anything. When i sleep, i turn off Wi-Fi an put it on airplane mode but the next day, i find my batter percent less by 7% and sometimes up to 10%
Its funny that My dads phone is an iphone 5 and its battery drains in much longer time than mine although iphone 5s is supposed to have a better battery. Can someone tell me what's the problem with my phone and what i can do to make its battery drain in a longer time?

Can I update my jailbroken iPhone to iOS7 without using iTunes?

I have a jailbroken iPhone 4 running 5.1.1. I can't restore this phone in iTunes as it throws up an error half way through (I have tried the shift-click method). My question is; is there a way to update it to iOS7, jailbroken or not, i don't mind, without using iTunes? The pwnage tool only works up to iOS5 and evasi0n requires the phone to be running iOS7 already. Any help would be greatly welcomed.

Why don't many people like the iPhone 5c?

The iPhone 5c isn't really the best phone. It acts like any other iPhone. I have a 5c. It's cheap. So if people don't have very much money. This would be a great phone. Apple doesn't show many commercials about it anymore. It's people just hate it. What's wrong with it?

IPhone: battery stick or battery case?

My iPhone 5c doesn't have the best battery life. I'm deciding between purchasing a battery stick or a battery case.
Each has their benefits. The battery case both protects and charges the phone but adds bulk. The battery stick allows me to purchase a real case, but it would be easy to misplace or forget at home.
Which should I get?

Can't connect to internet through Wi-Fi or network cable?

I have a Sony vaio and for few month it does not connect to my home Wi-Fi, Since i have that problem i Installed new windows and deleted everything from the hard-disk and I changed the modem and router,

The computer will connect if I'm using my Iphone hotspot but it will not connect to my home network it keep tells me that the password is incorrect when I'm 110% sure i do the right password!