Your phone will shake all over the place on rough roads

it works good it holds my phone even on the bumpy roads

The phone is fairly heavy (Note 4) but does not come off even on rough roads

i.e. the tablet does not fall even driving over bumpy roads.

Holds my iPhone 6+ in my car on bumpy roads

it loosens while driving, even though I'm not on a bumpy road

On super bumpy roads your phone will shift to one side or the other but it will not fall off the vent

I have not driven on rough roads with it yet

I’ve driven my car on bumpy roads, taken fast turns, hard accelerations, and hard stops, and the phone has never fallen off of the mount

My only caution would be if you're on a consistently bumpy road the phone might eventually slip off, but otherwise it's very sturdy and stays in place

Both worked on Galaxy S7 Edge..though larger plate better for this phone especially on bumpy roads

Product works as advertised, however if driving down rough/bumpy roads, phone will slip down slightly on one side.

the magnet won't hold your phone if you are on a rough road surface

perfect for rough driving off road

I put one inside my otterbox case and it holds very well even on rough roads.

Our roads are not good

Driving the rough roads of GA, SC and NC caused my phone to hit the floor of the far more often than I can count on both hands.

and I have driven over some pretty rough roads.

Holding Ipad mini4 on smooth road, will hold any size smartphone without an issue unless you go offroad.

Thus the Garmin falls off if I make a turn or am on a bumpy road.

phone never falls, even when driving over rough roads.

Magnet is strong to hold your phone even on the bumpiest road

Keeps phone stable even through bumpy roads

Needs a slightly stronger magnet, if you rumble over rough road my phone will shift off the magnet

Phone stays in the same place constantly on normal/smooth roads.

On a really bumpy road with my thick cell phone case on it will fall off but very often

You can position this any way you want and once you put the phone on the mount - it won't fall off even if you hit rough roads.

The magnets keep your phone in place even during bumpy road conditions

Over bumpy roads it can get a little dicey but that's to be expected; it's not a super secure mount

On super bumpy roads your phone will shift to one side or the other but it will not fall off the vent

Now, granted I have not had this for long but for the little time I have had it and the "bad road" (as we call it) that I was passing through, this thing is amazing

When I was on a really bumpy road and had to slam on my brakes, my phone did fall off

Will hold my phone no matter how rough the road is

It holds to the windshield very well and hasn't dropped my phone yet, though I haven't really tested it on super-bumpy roads.

It addition, my iPhone 6S has never fallen down, even when going bumpy back roads.

Even on mildly bumpy roads it jiggles around a lot

It has fallen once when driving over continuous rough roads.

My phone has never fallen off even during the bumpiest roads and I have a large Galaxy Note 5 with a bulky defender case covering it.

Magnet not strong enough to hold iPhone plus in rough roads, but after having this a few months, I have gotten "attached"

I love it, works amazing and holds my phone over rough roads without any issues

Tried it out on a trip & the bumpy roads were just too much for it

Fits perfectly for bumpy Eastern European roads.

It has never dropped the phone, even on very rough roads

It holds my heavy Google Pixel 2 xl securely even when driven over very rough roads.

Does not bounce or wiggle on rougher roads.

My one fear with this was that my phone would fall from the mount when hitting bumpy roads, and that has yet to happen

Holds my big and heavy Nexus 6P securely, even on bumpy roads.

Has a very stiff arm that doesn't shake even with stiff off road suspension

Holds my iPhone 7 securely even over bumpy roads and hairpin turns.

Keeps phone in place on very rough roads.

Holds my phone well, even on bumpy roads.

It holds to the windshield very well and hasn't dropped my phone yet, though I haven't really tested it on super-bumpy roads.

Works as it should but does not stay upright

Been buying these out for others as a gift as well as myself

Works as it is designed to.

I really like this product overall but still stumped as to why it only suction to one of my three dashboards.

My friend turned me on to it because I'd had trouble finding one that worked as it should (over time every other

It impresses me as it holds my phone 90% of the time during straight forward driving and bumps

Its not as long as thought it was but its nice a