Where Is It Legal to Mount a Phone in Your Car? Windshield Laws by State, and the Mount That's Legal Everywhere
Here is a fact that surprises most drivers: the phone mount itself is legal everywhere in the United States.
What is regulated is where you put it, and in a surprising number of states, the windshield, the single most popular mounting spot in America, is exactly where you cannot.
This guide covers how windshield mounting laws actually work, which states restrict them, how California's famously specific rules read, and the one placement that sidesteps the entire question. If you are shopping rather than researching, our truck phone mount guide covers the hardware side.
Laws change and enforcement varies by jurisdiction. Treat this as orientation, not legal advice, and check your state's current vehicle code.
The Three Things Worth Knowing
Safe in every state
No US state prohibits a device mounted to the dashboard, provided it does not obstruct the driver's view of the road.
A patchwork
Some states allow them anywhere, some only in defined zones or positions, and a large group prohibits non-transparent objects on the glass entirely.
A separate question
Most states now require hands-free phone use while driving, which makes a mount practically mandatory. The placement rules sit on top of that.
Why Windshield Mounts Are Restricted at All
Every state has some version of an obstructed-view statute: language along the lines of “no object that obstructs or reduces the driver's clear view through the windshield.” These laws predate smartphones; they were written for dangling ornaments, stickers and tinting.
A suction-cup phone mount is a non-transparent object attached to the windshield, so in states that never carved out an exception for electronics, it falls under the general prohibition.
States that do allow windshield mounting typically did it by writing exceptions: defined zones, usually low corners out of the primary sightline, or defined positions near the rearview mirror. That is why the answer is so inconsistent state to state. Each legislature wrote its own carve-out, or did not.
Is It Legal to Mount a Phone on the Windshield in California?
California is the state everyone asks about because its rule is the most specific in the country. Under California Vehicle Code section 26708, a portable electronic device may be mounted on the windshield only in defined zones: a 7" square in the lower corner farthest from the driver, or a 5" square in the lower corner nearest the driver, positioned outside airbag deployment zones. Anywhere else on the glass is a violation.
Low corner placement is legal but puts the screen well below your natural sightline, which is its own problem. Most California drivers are better served by a dash mount that puts the phone high on the dash, near the sightline, and entirely outside the statute.
Which States Restrict Windshield Mounts?
Rather than a 50-state table that goes stale the next legislative session, here is the reliable pattern.
| Group | What the law does | What it means for you |
|---|---|---|
| Defined zones or positions | Corner-zone or near-the-mirror rules for devices. California is the best-known example | Placement details matter: right zone, legal; wrong zone, citation |
| Broad obstruction prohibitions | Restrict or prohibit non-transparent objects on the windshield with no meaningful exception for phone mounts. Commonly includes New Jersey, Pennsylvania, Minnesota, Texas and Washington among others | The windshield is simply not an approved location |
| Permit windshield mounts | Explicitly allow devices on the glass, or have no restriction in practice | The universal obstruction principle still applies: a mount in your sightline can still draw a citation |
The honest takeaway: unless you have read your own state's current statute, you do not know which group you are in, and if you cross state lines you can change groups mid-drive.
The Placement That's Legal in All 50 States
Mount the phone on the dash, below the windshield line, positioned so it does not block your view of the road.
That placement satisfies every state's rules simultaneously. No zones to memorize, no worry at the state line, and as a bonus, a dash position keeps the phone closer to your natural sightline than a low windshield corner ever can.
This is not a coincidence in how our products are designed. Every Mountech vehicle dash kit, from the F-150 and Bronco to the Jeep Wrangler and Gladiator, the GM trucks and the 2024+ Tacoma, bolts to dash structure below the glass. High enough to sit near your sightline, low enough to stay out of the statute books.
Prefer glass anyway, in a state that allows it? The Heavy Duty Vacuum Cup Mount holds on windshield or dash, so the same hardware works whichever placement your state permits: low corner on the glass where legal, smooth dash panel where it is not.
Phone Mount Legality FAQs
Are phone mounts themselves illegal anywhere?
No. Every state permits phone mounts. The regulated variables are windshield placement and view obstruction.
Can I get a ticket for a dash mount?
Only under the universal principle: if it materially blocks your view of the road, any mount anywhere can draw an obstruction citation. A properly placed dash mount, low and out of the sightline, does not.
What about vent mounts and cup holder mounts?
Legal everywhere for the same reason dash mounts are: they are inside the cabin, off the glass. They fail on engineering, not legality. We do not make either one, and our truck phone mount guide covers why.
Do hands-free laws require a mount?
Effectively, yes. Most states prohibit holding a phone while driving, and a mounted phone is the compliant way to navigate. The mount solves the hands-free law; this article is about where the mount can go.
Where should I mount my phone for a road trip through multiple states?
The dash. It is the one answer that is correct in every state you will cross.
Below the glass, by design
Every Mountech vehicle kit bolts to dash structure at factory hardware points, which keeps it out of the windshield statutes in all 50 states.
