Aside from having no built-in GPS, the Vantrue N4 also has no Wi-Fi connectivity for either storing your videos to the cloud or quickly grabbing them from a connected smartphone app - both significant omissions for a modern dash cam.
Since the VIOFO A139 Pro is a fresher model, you can expect that it has higher tech features compared to the N4. More than just the built-in GPS, the VIOFO A139 Pro also has built-in Wi-Fi connectivity that offers not just one but a dual-band connectivity - 2.4GHz and 5GHz. This allows faster data transfer and ensures smooth video streaming, downloading, and sharing through the dedicated VIOFO app.
The VIOFO app, which is available for iOS and Android devices, is included with the A139 Pro. The Vantrue N4, on the other hand, is not compatible with a mobile app. When viewing, you can either use the 2 inch screen or remove the microSD card from the dash cam and insert it into your Mac or Windows computer.
The maximum SD card capacity supported by the Vantrue N4 is 256GB. VIOFO, on the other hand, increased the A139 Pro's storage capacity by increasing the maximum SD card capacity to 512GB. It's uncommon to find dash cams that support memory cards up to 512GB, so the VIOFO A139 Pro is a welcome addition.