Hi,

Let see if i get it.

LOOP:
HSEROUT["at+cpms=",34,"SM",34,13] : PAUSE 500
HSEROUT ["AT+CMGR=1",13,10] : PAUSE 500

Change to.

LOOP:
HSEROUT["at+cpms=",34,"SM",34,13]
HSERIN 5000, [WAIT("OK")]
HSEROUT ["AT+CMGR=1",13,10]
HSERIN 5000, [WAIT("OK")]


Is this what you ment?

Thanks for caring.