I went with a cigarrete/12v power slot phone holder. Avoids having to stick anything to your dash and the suction cup issue of falling off when it gets hot.

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something like this:

https://www.amazon.com/Holder-Charger-Compatible-Samsung-Motorola/dp/B07NN7SP53/ref=sr_1_4?keywords=cigarette+phone+holder&qid=1563392605&s=gateway&sr=8-4