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Individual home screen background#


Available with Release 1.1.0

The home screen background of the D-400 and D-600 telephones may be individualized by either

You can apply a *.jpg or *.png image of whatever dimension, as long as it is not bigger than 5 MB.

The image will be scaled and cropped to fit into it’s space.

This may cause loss of quality and/or parts of your image.

Requirements for a flawless background image#

Meet these dimensions to get the best experience out of this feature


Resolution: 480 x 250px

D400 Screen

Screen of the D-400


Resolution: 1024 x 570px

D600 Screen

Screen of the D-600


The lower part of the image will be covered by the softkey bar.

  • D-400: 50px
  • D-600: 68px


The text colors of the home screen are white and may loose their readability on some colored background image.

Provisioning a background image#

The xml tags to use are: <homeScreenDesign> and the subordinated tag <backgroundImage>.

Inserting an image encoded to a base64 string#

How do I generate a base64 string?

You can use either

  • our online tool:

or for example on Ubuntu linux

  1. Open a terminal
  2. base64 --wrap=0 /my/path/to/background.png > /possibly/another/path/to/background.txt

The string will be written without wrapping into the provided file and may be copied from there to the xml provisioning file.

The background image may be inserted as a base64 encoded string:

<?xml version="1.0" encoding="utf-8"?>
  <backgroundImage>/9j/ […] e3TXT5RCiiitCgooooA//Z</backgroundImage>

You can also insert the link to an image file on a web server:

<?xml version="1.0" encoding="utf-8"?>


The image will be loaded on every reboot of the phone, so make sure the file is stored in a reliably reachable location. If you are not sure about this, please download the image onto your phone and set it from there as background image (II).

How do I get new images into the gallery?

In order to get new images from the Internet into the gallery, you can use the pre-installed browser “Firefox Klar”.

  1. Open the browser and
  2. Insert the link to the image into the address bar or use the google search

Once your image is shown in the browser (google search: “full size image”), long press it and chose “save image” from the menu.

In order to set an image from android’s gallery as home screen background, open the menu of your d-series telephone and click on gallery.

Here you can open the desired image. In the menu (upper right corner), click on Set picture as, then in the lower middle of the screen Set as ... Wallpaper and on the upper left corner Set Wallpaper.