What's the cheapest plan for an iphone?

I recently lost my phone and am used to paying 40$ a month for unlimited text, talk, and picture message. That's all I really need on a phone. I'm getting an iphone from a friend, I'd like to use it but I don't want to pay that much more for features the features I'm used to getting at a cheaper rate. Also I don't mind being without internet data etc… What's the cheapest way to use an iphone?

Why can't I load pictures onto my iphoto anymore?

I have a mac by the way

so last week i plugged my friend's iphone to my iphoto to transfer some pictures. I forgot to eject her phone and i just removed the chord from my computer and it says her device was still attached. Now I can't load pictures from my phone to my iphoto. My iphone doesn't show up on the list of devices connected on iphoto. What should I do?

What should/can I do to connect my iphone to my iphoto so that I can load my pictures again?

Should I buy the factory unlocked iPhone 5 from Apple?

Or should I buy one of the many listed on Craigslist? It's just they are cheaper. I saw quite a few selling for exactly $650 or less. Reason I want an unlocked one is because I want to use with T-mobile which is only charging me $60 a month for unlimited text, calls and web.

Added (1). Should I buy the factory unlocked iPhone 5 from Apple or should I buy one from Craigslist?

Added (2). I do not understand what Susan has to say. I have a Sprint iPhone 4s activated with a T-mobile sim card and I did not pay an activation fee. All I paid for was the sim card. What I'm asking is: Should I get an iPhone 5 unlocked from Apple or one on Craigslist?

How to get a sim card for iPhone 4?

My dad had just upgraded to iPhone 5 and he's handing down his iPhone 4 to me, my friend has an iPhone 4 w/o data on AT&T and I'm wondering how do I go about requesting a sim card. Do I go to the store? Do I have to order online? This would be without data while other people on my plan do have data. I'm always home so I figured data is useless when I have Wi-Fi.

Best Utilities/Tools Apps for iPhone?

What are the best apps for iPhone? I like apps that are in the categories I've posted in the title of this question. Something to do with tools and utilities, usefulness, something cool, to make your iPhone cooler, more free and to make use of it most way possible.

Some of the Apps I already have are

File Manager for iPhone
Atomic Browser
Photon (Flash-enabled browser)
MP3 Music Downloader (download via browser or iTunes and hold unlimited amount of songs)

etc. Something more of settings than the ones I listed, and something that in tools that makes an iPhone more useful than the ones I posted.

How to get my iphone headphone mic to work on Pc without splitter?

So i pluhhed the things into my mic jack, and ided them as mics, and when i tap them together the computer registers it as volume and noise comes out from my separate speaker, but it won't pick up my voice at all. Only when i touch them together. How do i set them up?