Yealink SIP-T21 E2

Configuring Basic Features
183
When the DSS key list is unfolded (tap More key when the phone is idle):
When the DSS key list is folded (tap Hide key when the DSS key list is unfolded):
Note
The wallpaper image format must meet the following:
Phone Model
Format
Resolution
Single File
Size
Note
SIP-T54S/T52S
*.jpg/*.png/*.
bmp/*.jpeg
<=4.2
megapixels
<=5MB
2MB of space
should be
reserved for the
phone
SIP-T48G/S
<=2.0
megapixels
<=5MB
The wallpaper will display on the entire screen. Note that the line key labels, time and date,
icons, and soft keys will display over the wallpaper, while they are invisible on the image logo
screen.