Motorola G24 Guide - Page 312

Hardware Information
3-228 AT Commands Reference Manual December 31, 2007
OK
AT+MVREF=2//The user set STANDBY and the Vref regulator will enter into ON
mode.
OK
ATS24=2//Vref regulator will enter into Low Power mode.
OK
ATS24=0//Vref regulator back into ON mode.
OK