Can You Use Your Phone as a Dash Cam? The Pros and Cons
You have already got a good phone with a great camera sitting in your pocket, and there is an app for just about everything. So why spend money on a dedicated dash cam when you could just use your phone as a dash cam instead? It is a fair question, and one we get asked a lot. Before you go that way, it is worth weighing up the real pros and cons, because a phone and a proper dash cam are not quite the same tool.
The short version: yes, you can technically use your phone as a dash cam, and in a couple of situations it makes sense. But for everyday driving on Australian roads, there are some real catches. Here is the honest rundown so you can decide for yourself.
Can you actually use your phone as a dash cam?
Technically, yes. A dash cam is really just a camera that records your drive, and your phone has one of the best cameras you own. There is no shortage of dash cam apps in the App Store and Google Play that turn your phone into a recording device, sometimes called a dash phone.
So the idea is not silly. Plenty of people have tried it. The question is not whether it can record. It is whether it records the right things, in the right way, when you actually need proof. That is where the gap between a phone and a dedicated dash cam starts to show.
Is it legal to use your phone as a dash cam in Australia?
Mounting your phone to film the road is fine, as long as you set it up properly. The rules that matter are the same ones that apply to any device on your windscreen or dash. Mount it where it does not block your view of the road, and do not touch, tap, or swipe it while you are driving, because that crosses into distracted driving and can earn you a fine and demerit points.
The catch is that a phone tempts you to fiddle with it. Notifications pop up, a call comes in, the app needs a tap to start. A dedicated dash cam avoids all of that, because it just runs quietly on its own. More on that below.
Where a phone falls short
This is the heart of it. A phone can record, but it was not built to sit on a hot windscreen for hours capturing clear proof. Here is where it tends to come undone.
It overheats on the windscreen
Aussie summers are brutal on a phone stuck to the glass in direct sun. Phones are full of a lithium battery, and lithium batteries do not cope well with heat. Leave your phone recording on the dash on a 38-degree day and it will likely get hot, throttle its performance, or shut down to protect itself. A dedicated dash cam is built for exactly this. It is designed to live on your windscreen and keep recording through the heat without missing a beat.
The night footage is not good enough
A lot of the moments that matter happen in the dark, and this is where phones really struggle. Your phone camera has no proper 'night vision', so headlights flare, number plates blur, and detail disappears. Dedicated dash cams use a dedicated low-light image sensor, often a Sony STARVIS 2, which is the chip inside the camera that captures light. It is tuned to keep number plates and faces readable at night, which is the whole point when you need proof.
No loop recording, and it eats your storage
A real dash cam uses loop recording, which simply means it records over the oldest footage once the memory card is full, so it never stops and never needs emptying. Most phone apps do not work like that. They save each trip as one big file that piles up on your phone until you run out of space, and if the phone is full, the recording can just stop. You also cannot easily lock an important clip so it is protected from being deleted. On a dash cam, a bump automatically locks that clip as proof and sets it aside.
Pro Tip: If proof is the reason you want a camera, loop recording and locked event clips are the two features that matter most. A phone app gives you neither in the way a dedicated dash cam does.
It flattens your battery, and cannot watch your parked car
Recording video is hard work for a phone. Expect it to chew through charge fast enough that you would need a charging cable running the whole time. Even then, the moment you park and walk away, your phone comes with you and the recording stops.
A dedicated dash cam is the opposite. It powers on the instant you start the car, and with a hardwire kit it can even keep watch while the car is parked and switched off, using a feature called parking mode. If a trolley rolls into your door or someone keys the paint while you are inside the shops, the camera catches it. Your phone never could.
A phone on the dash is a magnet for thieves
A phone sitting on your dashboard is an advertisement to anyone walking past. Every thief knows a phone is worth grabbing. A dedicated dash cam is small, tucks up behind the mirror, and blends in, so it does not turn your car into a target.
The viewing angle is wrong
Good dash cam footage wants roughly 60 percent road and 40 percent sky, mounted up high near the mirror for a clean view. A phone is bulky and usually sits lower on the dash, so it captures too much of your bonnet and dashboard, catches reflections in the windscreen, and misses detail up the road. A purpose-built dash cam is designed to sit in exactly the right spot.
When using your phone as a dash cam does make sense
It is not all bad. There are a couple of times when reaching for your phone is genuinely the smart move.
The first is a hire car or a borrowed car. You cannot exactly hard-wire a dash cam into a rental, and you may not be allowed to. A phone on a suction mount with a charging cable gives you flexible, low-fuss cover for a trip, and the footage can still back up an insurance claim if something goes wrong.
The second is as a backup. If your dash cam gets stolen or stops working, using your phone for a few days until you get a replacement is far better than driving with no camera at all. A makeshift camera beats no camera.
So, your phone or a proper dash cam?
For a quick trip in a hire car, or as a stopgap, your phone will do the job. For the daily driving you actually want protected, a dedicated dash cam wins on every count that matters: it turns on by itself, records clean footage day and night, loops so it never fills up, locks the important clips, watches your car while it is parked, and does not tie up the phone you need for everything else.
The good news is that a proper dash cam costs a lot less than most people expect. A solid front-and-rear camera like the best-selling dash cams we stock covers the important bases for a very fair price, and it is a one-off spend that sits there quietly protecting you for years.
Not sure what to get? Talk to us
If you have been leaning on a phone app and are not sure what to replace it with, that is exactly what we are here for. Tell us what you drive and how you use the car, and we will point you to the right camera without any pressure. Reach out to Michael or Harrison any time through our contact page, or browse the full range of dash cams we stock when you are ready. No worries either way.
Last reviewed: 19 August 2026. What this page says about mobile phone and mounting rules is general information rather than legal advice, and the rules differ between states and change over time, so check your state road authority before you rely on it. Any sensor or specification figure quoted here comes from the manufacturer's own published material rather than from controlled testing by us. If a specification, a feature or a price on this page is wrong or has gone out of date, tell us and we will correct it.