What comes in a USB stick and lets you plug a regular phone into a jack to make free high-quality phone calls? Why magicJack, of course. The magicJack USB device has a regular phone jack on the back into which you plug your phone and off you go. The service rolls out in next month so you’ll have to wait until then to buy your magicJack. You get full features like caller ID, call forwarding and waiting. It’s not clear how international calls might be charged so you might still need Skype for that, and the magicJack service can’t handle 911 emergency calls, either.