Soldiers calling home

What I am still enjoying over here are the little differences in daily life you wouldn't notice when you're over here for a while. Things Europeans would find strange or amusing and most of my American friends wouldn't spend a second thought about... like this envelope I found together with my Amazon order, for donating your old cell (ehem... mobile) phone to soldiers. Their mission is to help 'the troops call home'.

I still think it is funny to donate my old crappy phone to any soldier of the world strongest army to give him or her the opportunity to call home. Don't they have stealth bombers, satellites and even more we don't know? Does my mobile phone really help anybody? Especially taking in consideration that American mobile phones are not working in most parts of the world... so what is left to do for my old mobile phone? Ending up as a piece of modern art on a generals desk? I like this idea though... :-)