30 minuten - 1 uur
Being an android guy, it took some convincing before I before I bought my daughter a refurbished iPhone. Fearing the worse, I took out the insurance through the carrier. Sure enough, she dropped it coming home from school. Imagine my outrage when they wanted $175 deductible to repair a cracked screen. Being the DIY type (and somewhat on the cheap side), I looked into doing the job myself.
Ordered up the repair kit from iFixit since I'd used them to repair old iBooks and Powerbooks. Thought there would be an instruction sheet, but since I didn't see one I went to the website. I also viewed the YouTube video. I also purchased the iSlack just to make sure I didn't do more damage during the repair. Everything is fairly straightforward. I found it easier than replacing the screen on a nexus 4. I struggled a bit reattaching the various cables. I don't care for the connectors that Apple uses. Otherwise it was an easy job, and for half the money my daughter's phone is as good as the day we bought it.
Make sure you keep the screws separate as they are different sizes. I lost time finding the right combination when it came time to reassemble the phone. Be patient with the connectors when you reassemble. Otherwise it's an easy job. I don't know why so many people walk around with cracked iPhones. Buy the kit already