njkayaker: I have been following the development of E ink phones for several years. I like a good tool and this type of phone would be easier to use and keep powered with a USB charger from my Son SL hub. I know the resolution is lower. Thanks to the link to the other post on E ink phones. The newer e ink phones have google play. They don't lag as much between screens and the resolution has improved some. So with the phone in airplane mode and the maps downloaded to the phone, keeping it charged while using navigation during the day should be easy.