I have an android phone (Device A), and an android tablet (Device B). Device B has a decent GPS, but Device A's is pretty much unusable. I would like to use Device A for navigation, but to do so I need a GPS quality only Device B has.

Is it possible to make Device A accept Device B's location as an external GPS signal (i.e. with the usage of mock location) while none of them being rooted? If not, does rooting Device A help?

I am interested in a general answer, but also in a more device-specific one if it is better:
Device A: Prestigio 5517; Android 4.4
Device B: Samsung Galaxy Tab 8.4 WiFi; Android 5.0

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    I've never tried that, but it should be possible. On device B you'd need an app to Use your Droid as BT-GPS Mouse, and on device A the corresponding counter-part to Use an external GPS mouse. Could you try and confirm that works? – Izzy Jul 21 '16 at 9:02
  • @Izzy Confirmed. I tried a setup like this before without success, but I could make it work with Bluetooth GPS on device A and Bluetooth GPS Output on device B. Some other pairs also worked. Thanks for the link! – Neinstein Jul 21 '16 at 9:45
  • Another approach is tethering GPS with an app like TetherGPS Lite. It sounds more efficient since it can be more optimized, but this awaits confirmation. – Neinstein Jul 21 '16 at 9:49
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    Thanks for the feedback! I've made it an answer then, including details provided by you :) – Izzy Jul 21 '16 at 9:52

As a test confirmed, this is possible via corresponding apps:

As you yourself found out, another approach is tethering GPS with an app like TetherGPS Lite – which you write "sounds more efficient since it can be more optimized". As this waits your approval, please approve below this answer then :)

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