11 Tips on how to start your very own successful repair business!   1. Practice. The best place to start is repairing your own phone and gain some experience, specifically if you have an older iPhone or another phone sitting around with a broken screen or another issue, and are worth more than the repair parts themselves, you can fix it and sell it or use it and profit on your very first fix. 2. Research. When you have a repair, research what's involved in the repair, I highly recommend a YouTube video of the specific repair, watch it from...