Viofo A139 Pro three-channel dash cam review

A 4K dash cam system with an interior view for taxi and ride-share drivers

5 Star Rating
Viofo A139 Pro's three cameras
(Image: © Alistair Charlton/Digital Camera World)

Digital Camera World Verdict

A fantastic three-channel dash cam that records 4K video forwards and Full HD footage to the rear and of the interior. Setup is easy, recordings are bright, sharp and accurate, and the hardware has clearly been designed by a company that understands what drivers want from a top-quality dash cam. Not cheap, but if you need a three-channel system – because you are a taxi driver, for example – it’s a great product.


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    4K resolution

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    Interior view (for those who need it)

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    Integrated GPS

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    Smart hardware design


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    Limited use cases

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Three-channel systems are something of a niche in the dash cam world. Most drivers can benefit from dash cams that face forwards and backwards, but those that also look into the interior of the car are intended for taxi and ride-share drivers.

With such a system, these drivers benefit from the usual recordings to the front and rear, but also a dedicated camera pointing inwards. The mere presence of an interior-facing camera can help prevent passengers from misbehaving, but also gives a third view of an accident. If the driver was unfortunate enough to be distracted by their passenger, or even assaulted, the best 3 channel dash cams can be there to help capture evidence.

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Alistair Charlton

Alistair has been a journalist since 2011 and used to be Deputy Technology Editor at IBTimes  in London. His specialist tech subjects include smart home gadgets, phones, wearables, tablets and dashcams. He is the host of  The AutoChat Podcast.