We all know how cell phones can work on one street and then have no signal on another part of the same street. This makes cell phone not the best option for survival if you get lost in the desert or dense woods.
I found a product that can turn any smartphone into a satellite phone giving you the power to call home from the top pf a mountain if you needed too. The Go is a fairly small and portable device, measuring 114 x 83 x 32 mm (4.5 x 3.25 x 1.25 in) and weighing 295 g (10.4 oz). When you need to send for help, check for typhoon warnings, or just check in with a loved one, you merely flip up the device’s antenna.