I think this phone is the perfect device for someone like my grandmother that can't even answer the phone on her smartphone because she can't slide the answer b

I think this phone is the perfect device for someone like my grandmother that can't even answer the phone on her smartphone because she can't slide the answer button. Smartphones nowadays are very complicated machines with hundreds of UX concepts that are not understandable by a increasingly higher proportion of the population. And you can never disable every function ("apps" in iMessage, really?!). My grandmother uses an Android phone I've very heavily customised (deleted apps with adb, put a Windows Phone-like launcher with flashing icons for notifications, compiled custom versions of OSS apps for SMS and calls, etc.). This Light Phone seems perfect for her.