https://www.amazon.com/dp/B00I608BJ8?ref=ppx_pop_mob_ap_share
i placed mine right under the hazard button
Magnetic phone mount like this or something similar based on the dash design.
I got this one, attached it to the carbon fiber above the infotainment system.
Came right off (no damage) when I... Cries sold it.
https://www.amazon.com/dp/B00I608BJ8/ref=cm_sw_r_apan_i_EG50ZPBRHCTNDM9YRKVX?_encoding=UTF8&psc=1
I got the Scosche Magnetic Phone Mount for my GLI and I've only had my phone fall off of it once in the last 3 years. 10/10 purely because you just slap your phone on it and it stays. I even have a case over the magnet on my phone and it works fine.
This SCOSCHE MAGDMB MagicMount Universal Magnetic Phone/GPS Mount for the Car, Home or Office in Frustration Free Packaging https://www.amazon.com/dp/B00I608BJ8/ref=cm_sw_r_cp_apa_i_uAqUCbCJTHRMP
Scosche MAGDMB MagicMount... https://www.amazon.com/dp/B00I608BJ8?ref=ppx_pop_mob_ap_share
This one works great in my Tacoma. Going to give it a shot in the Tiguan.
Scosche MAGDMB MagicMount Magnetic Car Phone Holder Mount - 360 Degree Adjustable Head, Universal with All Devices - Dashboard Mount https://www.amazon.com/dp/B00I608BJ8/ref=cm_sw_r_cp_api_i_2F8BMKK0Z3AWDFSW291B?_encoding=UTF8&psc=1
Best phone mount I have found is this one, works really well and is very convenient.
SCOSCHE MAGDMB MagicMount Universal... https://www.amazon.com/dp/B00I608BJ8?ref=yo_pop_ma_swf
This was suggested by another redditor awhile back, and honestly it's perfect. It fits in the little square space between the ac vents above the radio. It had two little outer flaps that you bend down, and they fit the contour of the space. I love it, and my phone stays out of the way of the vents.
I don’t know of anything specific to the ‘Trek, but I use this one ( https://www.amazon.com/MAGDMB-MagicMount-Universal-Frustration-Packaging/dp/B00I608BJ8 ) in my cars. It covers part of the infotainment screen, but that doesn’t bother me.