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![](https://browser-addons.com/wp-content/uploads/2021/03/jlakoigfgakddcdijmnckhafhkflghfl.jpg)
[+amgD] Click vMonica to turn ON the vMail indicator; or, click vMoffica to turn OFF the vMail indicator.
Cellular telephones have a vMail indicator that is either turned ON (vMonica) by a special binary PDU format SMS from the SMSC that is coded with a Data Coding Scheme (DCS) value of C8 (in hexadecimal octet format) or turned OFF (vMoffica) by a corresponding binary PDU format SMS with a DCS of C0 (assuming 7-bit characterset, since most binary SMSes use 8-bit encoding schemes).