Need to ship an iPhone that you sold on eBay? Maybe ship a Samsung Galaxy phone for repair? Or perhaps you're sending your old iPad off to your mom as a gift?
This video shows the best way to package and ship your electronic devices.
Spoiler: It's the United States Post Office (USPS) flat-rate shipping. It's easily the most cost effective method, pretty speedy, and in our experience of shipping 1000's of devices - it's very reliable.
One suggestion: Always get a tracking number and require a signature on any expensive electronics that you ship. It will help guarantee your device gets delivered and let you know who signed for it. It's definitely worth the extra $3.