Vexilar Sonarphone Review

  • Display
  • Sonar
  • GPS accuracy
  • Ease of use
  • Price

The Vexilar Sonarphone is a fish finder with no display or controller which uses your existing phone or tablet computer as a display instead. This allows you to save money on the fish finder, as you will be able to use a device that you will probably take with you on your fishing trips anyway. The great news is that you wont lose any functionality because of this.

This Vexilar Sonarphone review will look at the various great advantages to this device so that you know what to expect if you are thinking about purchasing this device.



Thanks to this fish finder using your existing mobile app to view and control the information that it collects, you can save a lot of money in comparison to other fish finders. The screen and the controller usually cost a lot to produce and make up a large amount of the cost of a fish finder, so if you’re happy to use your own device, then you will be impressed at the low cost of this fish finder.

Vexilar Sonarphone on phoneWhat’s Included?

The Vexilar Sonar Phone comes with a wireless T-box to transmit the data from the finder to your phone. You will also get a transducer to search for the fish, as well as a USB 12v adapter to plug the unit in. To hold your phone whilst you are walking around the boat, you will also get an armband to store your phone and you will get some screws to attach the transducer to your boat.


If you already have a smart phone or a tablet computer, you can save a lot of money with this device as you wont need to pay for the display assembly of a fish finder, which can often add a great deal to the cost. With a simple set up procedure and your mobile device, you will be able to connect the various elements of this fish finder and use your smartphone or tablet as a display. The software that is available for Android or Apple operating systems is advanced and offers you as many features as the best fish finders on the market.

The wireless T-Box is used to connect the transducer and this is powered by a 12 volt USB connection. The wireless box can send the data collected to your smart phone or tablet using a standard Wi-Fi connection to allow your device to start mapping and charting the transducer’s findings.


SonarPhone Mobile App

vexilar SonarPhone Mobile AppThe app that you need to install on your phone or your tablet is highly useful and has the ability to create charts as you are on the move. It also creates a detailed contour chart that maps out the water’s bed. The application technology behind this is called Sonar Charts Live.

The app is free to download and you can store it on as many devices as you like. It has simple set up instructions that you are guided through when you start it up for the first time.

Using the display on your mobile device, you can alter the settings for the transducer depending on the weather and location conditions.

The transducer cone can be altered by 40 degrees for a narrow and precise search, or a wider and broader search. For further convenience, you can take advantage of an overlay window which shows a magnification of the footage. You can easily zoom in on areas that look interesting for a closer inspection.

The sensitivity or the gain of the returns can be altered with ease too. This is one of the best user features of this device, and you will be able to see the gain at the top of the screen.

Navonics App

You can purchase the Navonics app separately, although it is not very expensive. This will turn your mobile device into a GPS system as well as a controller for the transducer. You will be able to easily navigate and follow maps thanks to this useful app that is fully compatible with this fish finder.

Vexilar Sonarphone ReviewPros

  • You can use your existing mobile device with this fish finder.
  • You can save money because you do not need to pay for a display or controller.
  • The app for the device is free to download and can be downloaded to many devices at once.
  • Powerful sonar transducer that offers the user the ability to alter the angle of the sonar range by 40 degrees.
  • Connect to this device easily over Wi-Fi.


  • When you use the app for this device on your ipad, you will notice that it seems like the display is too large. This is mainly because the app was created for smaller smartphones and is simply compatible with larger tablets. This should not be a problem, but it may seem a little on the clunky side.



This Vexilar Sonarphone review gives a great insight into this minimalistic device. Thanks to the basic nature of it, you can save money. If you usually take your smartphone with you on your fishing trips, which most people do, you can simply connect this device to your phone and you’re good to go.

The functionality of the free app that comes with the device is great and allows you to see all that’s happening in the water around you, as well as being able to control the device’s features with precision. You can also download additional apps if you wish at an added cost to increase the functionality of the fish finder further.