The TV has to have the Alexa App. If you have Dish, the Hopper has the App and it controls turning TV on, changing channels, pause, resume, fast forward and rewind.
I go as long as I can, as long as it does what I need. I have a Samsung Note 3 and love that I can replace the battery. Would have to look hard and long to pick a new phone.
You need to download WAZE on your phone and add a few favorite places you drive to. Great app for Android Auto. Will not work with I phones as Apple will not allow it. Shame.
You you need to keep the phone plugged in.