Has anyone had any luck intergrating a GPS unit with your Smartphone? Looking to gain sub 5m accuracy. Ideally would like the phone to just use the better gps reciever when it is connected. This goes for any tablets as well.

Also, are there any cheap add-on gps units that get this accuracy for a smart phone?

Anyone done anything like this?


  • Not exactly for smartphones, but there is a device by Nokia which offers +/- 5-10m accuracy and can be connected to wide range of Nokia feature phones. europe.nokia.com/find-products/accessories/all-accessories/…
    – Chethan S.
    Apr 18, 2012 at 15:52
  • I had not seen that from Nokia. Good idea, but not any better accuracy than a gps in a smart phone. I'm just so surprised that trimble hasn't put something out for this. Seems like it would be a huge market and that the market is moving towards using smartphone/tablets as mobile data collectors
    – Thad
    Apr 18, 2012 at 17:06
  • Beta Tested the Nokia Bluetooth GPS Module LD-4W with a Nokia N97 and N82 - was slow on the cold start 2 mins for a GPS fix - but was quick with assisted GPS and warm start (15 secs). With Sportstracker will store as gpx - can export to kml.
    – Mapperz
    Apr 18, 2012 at 17:51
  • I'm curious if there's an app that integrates the SXBlue II with an iPad. Apr 19, 2012 at 13:22
  • wow. Yeah that would be ideal. Just shot the company and email to ask price and if they had experience integrating with smartphone/tablet over bluetooth. I'll post their response.
    – Thad
    Apr 19, 2012 at 13:43

4 Answers 4


Submeter GPS Handheld with bluetooth from Trimble

enter image description here

GeoXH or GeoXT 6000 series model to suit your needs:
Product Models  GeoXT   GeoXH
Accuracy    Submeter    Decimeter/Centimeter
Floodlight  Optional    Yes
Cellular modem  Optional    Optional
Camera  5 MP    5 MP



    850/900/2100 MHz


    850/900/1800/1900 MHz


    802.11 b/g


    Version 2.1 + EDR


  • Yes. But if I were to say open ARCGIS for iphone on my iphone would that GPS be functioning within my app? Make sense? I actually have an old geoxt 2005 that has bluetooth but it only allows data transfer not gps integration across the blue tooth connection.
    – Thad
    Apr 18, 2012 at 17:39
  • 1
    your option is also 6,000 dollars... store.trimble.com/OA_HTML/… this is another option but again, will it integrate into my apps? will it override the cellphones built in GPS?
    – Thad
    Apr 18, 2012 at 17:41
  • if you can afford arcgis/iphone then this can be customised to submeter accuracy - resources.arcgis.com/content/arcgis-iphone/api will pull data from your device which you can piggyback the trimble receiver via bluetooth.
    – Mapperz
    Apr 18, 2012 at 17:45
  • $8195.00 for GeoXH but you get a nice yellow box for $17,995 (you pay for the accuracy)
    – Mapperz
    Apr 18, 2012 at 17:48
  • ahh. via the sdk. I had not thought of that before. We have arcmap, but no server currently. So that would be useless until we went to upgrade.
    – Thad
    Apr 18, 2012 at 18:18

I wouldn't normally answer my own question but this is the best solution so I will.


8.5 battery life 2.5m accuracy

The one we mentioned above (#SXBlueII) is 2k because it is survey grade accuracy. So it has it's place but for most its overkill.

  • I doubt you will find this is much better than the internal gps.
    – Willy
    Apr 24, 2012 at 21:21
  • What makes you think that? Its WAAS compatible.
    – Thad
    Apr 25, 2012 at 18:51

The answer to this depends on which part of the world you are in and what services are available. Coastal areas have marine beacons which facilitate cheap correction. Satellite services are available in inland areas which require different hardware and have vastly different pricing.


We provide a number of GPS/GIS data collection and stakeout apps for the iPhone and iPad devices. We have been recommending the Dual XGPS-150A and the Bad Elf GPS receivers to our customers. For those who require better accuracy and have more money to spend, there are the iSXBlue and the EOS Arrow units that one could consider.

  • 2
    Could you maybe give more specifics. Dec 19, 2015 at 7:51

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