I saw a post about a small phone that only makes and receives phone calls, nothing else. The battery lasts for 20 hours. It looks very light but I can't find a posted weight. I was thinking this may have some appeal as a safety device for UL backpackers who don't rely on a smartphone as a GPS or camera but still want the ability to make a call when in cell range for whatever reason.
http://www.thelightphone.com/#getthelightphonefirst




