Hello there. I had setup possibility for phones to individually change background image.I badly need option to change all at once.I did try to change standard common phone setting.Unchecked option that user can change background image.Put the correct...

Hello i need some help. I had read some answers regarding this problem but I can't get this done. I need to change background image for all phones.I am able to chage background image on my phone, as well other users are able to do the smae.I Under co...