Couldn't wait for the Xs Max. Now can't wait to return it.
7 Plus had zero problems in my office. Xs Max will cycle between one bar of LTE then to 4G and then back.
Dropped multiple calls, including when I'm using WiFi calling and straight cell calling.
Battery life is not as good as the two year old 7 Plus, I assume because the phone is constantly searching for LTE connectivity or running on 4G. Not sure if that's a reason for battery drain or not.
Lastly, with IOS 12, the three familiy members that share our Apple ID now REGULARLY have all of their text conversations merged into one so it's impossible to text one individual and not the other.
Before you start in about not sharing an Apple ID. . . it has worked perfectly for 7 years with multiple versions of IOS and probably 20 different iPhones and iPads.
Regardless, not waiting around to see if this problem is hardware or software . . . or if it's software how long it will take for Apple to issue a functional patch.
My $1,450 buy in means I'm not in the mood to be a Beta tester.
One more gripe . . .
Maybe this would improve with familiarity, but IMHO FaceID and CarPlay do not play well together. It's much more convoluted to unlock the phone in the car with FaceID than with using the dedicated Home button.