If it's in your hand it is a conviction.I don't know if I have ever seen a vehicle with "tinted" windows that is legal. You need 70% vlt. Most tinted windows are less than 30% vlt.
Avoid ticket A, catch ticket B.
EDIT:
Now, privacy film on your phone might work? The stuff that sends all light straight forward so from an angle, only black can be seen. If you are holding a device but they can't see if the screen is on, is that sufficient for a conviction?
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