I've gone through this explanation
but you know, there is one action remaining, which is how to push all phones to take the new default background.
Note: we have two phone sizes we have uploaded, 800x480 & 320x212
I hope you are got it.
Go to Solution.
You can do it using Common Phone Profile.
upload the images to TFTP folder (Path as your phone models). Restart the TFTP.
Use the file name in Common Phone Profile. apply the profile to all phones.
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For 79XX series phones using common phone profile, have a look on below thread.
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