GSM SMS Show on TV Screen--OSD You can use your mobiphone or computer ... sent Messages to the device,and it will show on TV Screen SpecificationsYou can use your mobiphone or computer sent ... Messages to the device,and it will show on TV Screen.AdvantagesGSM SMS add to AV signalGSM SMS add ... signal is mainly used in the video signal added on TV screen, such as Chinese, characters, simple graphics, etc. ...