I have been using something like this for years, works with all phones regardless of size. I have 2 like this in each car, driver and passenger. Has no issues holding my note 8, even thru bumpy roads. Search for better deals if needed but this style is awesome.

Cellet PHT850BK Dashboard/Windshield Car Clip Mount Holder with Sticky Pad for Samsung Galaxy S8 S8 Plus S6 S5, Note 8/ Apple iPhone X 8/8 Plus and other Phones and GPS up to 3.8 Inches Wide https://www.amazon.com/dp/B00NYPBO26/ref=cm_sw_r_cp_apa_3uQ0zbMEECXZF