Hey, I've been trying to get my GSM shield (SIM900 module) to work to no avail. After roaming around for answers, it looks like the shield isn't even connecting to the network as indicated by the blinking network led. Apparently it should blink very 2000ms if its connected to a network. But mine blinks at around 900ms or less which means its not connected.
Is there any way to figure out why and fix it? below is the link to the shield I'm using.
http://www.ebay.com/itm/230911052682?_trksid=p2059210.m2749.l2649&ssPageName=STRK%3AMEBIDX%3AIT
I'm in Canada using a prepaid service from Bell if that info helps.
Thanks!