Wireless Joint

Is there an AT+ command to send and receive text with the RM520N-GL modem. AT+CMGR / AT+CMGS. Tmobile Bus [TI] sim.
Example: send msg "HI" to 4048675309

Thanks in advance

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AT+CMG__ [but i cant understand the description in the manual as i am not familiar with AT+ commands]

Example
AT+CMGF=1 //Set SMS message format as text mode.
OK
AT+CSCS="GSM" //Set character set as GSM which is used by the TE.
OK
AT+CMGW="15021012496"
>This is a test from Quectel //Enter in text and tap CTRL+Z to write message.
+CMGW: 4
OK

Im stuck after --> AT+CMGW="15021012496"
unable to enter the message..