T42G Flashes Yealink Logo

[Yealink Support]

1. T46G supports wallpaper but not logo.
2. Yes. This settings disable all logo from appearing.
2. You can configure this in auto provisioning files and make a mass deply.
Take T42G for example:
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#!version:1.0.0.1
###Except T46G Model
##It configures the logo mode of the LCD screen (except for SIP-T20P IP phones).
##For SIP-T19P/T21P/T22P/T26P/T41P/T42G IP phones:
##0-Disabled 1-System logo 2-Custom logo
##The default value is 0.
##For SIP-T28P IP phones:
##1-System logo 2-Custom logo
##The default value is 1.
##It enables or disables a text logo (for SIP-T20P IP phones).
##0-Disabled 1-Enabled
##The default value is 0.
phone_setting.lcd_logo.mode = 0
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