The only things that can continuously use internet data are online map layers and group ride. Here is an average data use reference:

Group Ride - around 10MB per hour (can be a bit more of less depending on the number of users in the group)
Satellite View - around 35MB per hour (depends on the map areas you load / zoom to )
Hill-shading Layer - around 40MB per hour (depends on the map areas you load / zoom to )

Everything else is user triggered, for example, downloading a map, which should be done only on a decent WIFI connection.

When DMD2 asks for the notification access permission, sometimes it can happen that you get a warning about it being a "restricted setting".

This is something you can easily solve by manually providing the "Allow restricted settings" permission.

This is done in Android Settings > Apps > Tap on DMD2 > Tap on "Force Close" > Tap on the 3 dots in the top right corner and select "Allow restricted settings".

In the video you can check step by step how to enabled restricted settings for DMD2.

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If no on-screen keyboard pops up when you tap on any text input type box chances are you need to enable the "On-Screen Keyboard" setting in the Android input settings. This usually is required to do once when you connect a remote controller by bluetooth.

You can find this setting in Android Settings app > System > Language / Input.

In the video you can see a case for this issue, you can also notice that when this happens you usually have a persistent notification that you can tap to then enable the on-screen keyboard.

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White stripes over the map (vertical or horizontal - usually in a grid pattern), means there was some system or app map scale change and some resident graphics cache was not cleared.
The easiest way to fix this is to just kill the DMD² app once, it will invalidate the cache.

In the video you can see two different ways to kill the app, either access the recents screen and kill the app by dragging it up or go to Android Settings > Apps > Tap on DMD² > tap on "Force Stop".

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To export a GPX file recorded with DMD2 you just need to use the Recordings List interface:

1. Tap the GPX button in the map view

2. Tap "Recorder" in the bottom of the GPX Manager dialog

3. Tap "Recordings" in the bottom of the GPX Recorder dialog

4. Tap on the file you want to export

5. Tap the "Share" or "Export" (depending on the language).

6. Select the destination to export to.

We usually export to something like Google drive because it provides easy cloud storage with access on any device.

In the video you can see the complete steps to export a recorded GPX file to Google Drive

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