Trimble Setup for Android Devices

Pair Unearth with your Trimble R2 device to obtain highly accurate GPS location data.

Unearth OnePlace integrates with Trimble R2 devices, providing highly accurate data via a wireless Bluetooth connection. As of Android Version 2.9.1 on the Google Play Store, integrating with the Trimble R2 is supported on both phone & tablet. Any other Trimble Device is not supported. Unearth for Android is supported all the way back to Android 5.0.

Unlike iOS, You do NOT need the Trimble Mobile Manager (TMM) app installed on your Android device to connect with the Trimble R2. 
Connect Trimble R2 -

  • Open the Unearth app
Note: Trimble is only compatible in the mobile app, so it does not work if you open Unearth in a mobile web browser.
  • Select a project that you’d like to add assets to via Trimble.
  • Open the side menu by tapping the "U" button in the top left corner, and tap “GPS Configuration.”
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  • Under the list of available Bluetooth devices, tap on the option that reads “R2 <some id>: Trimble -> <some address>.”

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  • You will be directed back to the map, with “Loading Subscription” in a header - the header appears below the project title bar after selecting the Trimble device.
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Connecting to Satellites -


  • The header will change to “Connecting…” 
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  • Then, the header will show “Connected to “R2 <some id>: Trimble: <some address>,” confirming that you have a valid Trimble License and have officially connected to the Trimble R2.
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  • The header will then change to “Satellites: #/#.” This step usually takes the most amount of time as the Trimble R2 is actively looking for satellites to connect to in the sky. The first # is the satellites connect to, and the second # is satellites available to connect. This total number depends on location, but the Trimble will usually connect to a minimum of 12.
Note: Connecting to Trimble outdoors is significantly quicker as there is less interference.
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    • Once Trimble has connected to an amount of satellites that will allow the R2 to provide precision accuracy, then the satellite count will disappear to show GPS accuracy in the header instead. Then you will be ready to add assets.
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    Adding Assets - Once the Trimble R2 is connected to Unearth, you can begin adding assets. 


    • Whenever the Trimble Icon (blue icon) is in the header, the Trimble is connected and ready to add assets. The GPS accuracy shown in the header is the precise accuracy the R2 is providing. Anything under 2m is considered exceptional.
    In comparison, the location coming from the phone GPS (not Trimble) is typically around ~16m.
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    • To begin adding assets, click the "+" button in the center of the menu bar at the bottom of the screen.
    • Select the tool you'd like to use to add an asset.
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    • Click the location arrow (left side of the screen, between the stacked "filters" button and the map button) to center on location.
    Note: Since Trimble is based on where you are physically located on the map, you must tap the "Center on Location" button AFTER selecting a tool and BEFORE adding the point to the map to enable the point as a Trimble point. The order of steps is important when adding points from the Trimble's location.
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    • Click "Add Point" on the right side of the screen to place the asset at your current location.
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    • Confirm your point was added with Trimble accuracy.
    Note: The added point should be marked as having been added via Trimble inside the “Geometry” tab on the asset panel. You can determine if a point was added from Trimble if the following are present: tab states “1/1 points connected with high-accuracy GPS," Trimble icon is located to the left of the point #, and an “Accuracy” field is attached to each point.
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    If you run into any issues or have any questions, please reach out to us at


    Revised September 2022