I love my Droid Maxx, love the battery life, love that it reads me texts while driving. Its time for a new phone. I'm considering S7 or S7 Edge. Will the 3600 mah battery be comperable to the Maxx's 3900 mah with the new efficiency optimizations? Does the S7 have the ability to read me texts while I'm driving? Those are my 2 biggest concerns. Thanks.