-27-SMS MenuThe SMS (short messaging service) Menu within the textmessage viewer contains text messaging options such aslocking or unlocking a message, deleting a message, dis-playing more or less message details, and displaying textmessages based on message urgency or arrival time.1 .L o ckM es sa ge With a text message displayed, press M1to lock a message; the lock indicator (=)appears on the top line of the text messageindicating the message is locked. Press M1to unlock the message. Note that a locked mes-sage cannot be deleted using the SMS menudelete message selection; locked messagescan only be deleted through the MessageMenu, M331, “Clear All Text Mes-sages” on page 28. t2. Del eteM es sa ge With a text message displayed, press M2;press 1 to delete.3 . Disp laym o rem s gd e tai lsWith a text message displayed, press M3 todisplay a more detailed message header(includes the time and date the text message issent and received); press M3 again to dis-play a less detailed message header (includesonly the time and date the text message isreceived).With a text message displayed:4 . S or tb ym es s ageu rg en cyPress M4 to display the text messages bymessage urgency (see page 25 for informationon message types and sort order).5 . S or tb yo ld es tm es s agePress M5 to display the oldest text mes-sages first.6 . S or tb yn ew es tm es s agePress M6 to display the newest text mes-sages first.