How Do SIM Cards Work?

SIM cards allow you to make calls and use data on your mobile network, but how do they work, and how can they restrict what you can do with your phone? Squarespace link: Visit http://squarespace.com/techquickie and use offer code TECHQUICKIE to save 10% off your first order. Follow: http://twitter.com/linustech Join the community: http://linustechtips.com source

What Battery Bank Should You Buy?

With so many choices out there to keep your phone battery from dying, how should you go about picking one? Thanks to Audible for supporting our channel. Get a free audiobook with a 30 day free trial at http://www.audible.com/techquickie. Follow: http://twitter.com/linustech Join the community: http://linustechtips.com source