yes from this website. http://www.open-electronics.org/ikea-sms-lamp-with-gsm-shield/
since i cant find website or basic example using basic on off via gsm shield (even in youtube) all of them are so complicated.,
though i have a downloaded program that can send message from the gsm shield to my phone. but what about from my phone sending instruction to the gsm shield? like this person did IKEA lamp mod - SMS LAMPAN - YouTube
sorry for my english. i think im a trying hard learner from the country that does not offer much of this kind of technology.