iv seen a project like that... yes, you can control home appliances like electric fan, electric iron, even your lights...the one i saw used sms & visual basic in implementing their project...my technical details are fuzzy but the project i saw was mainly for turning on/off home appliances through some set of instructions in sms...
If you are using a mobile phone the best method is to use bluetooth. Many bluetooth modules are avaialbe in the market. We used A7 engineerings product and it worked fine for us. We did a home automatino thing with bletooth where we can control 4 appliances via a windows smart phone.
yes you can.... use the vibrator of one cheap mobile (with sim).... connect to a smidtt trigger, then drive a relay (5volt coil) contacts.... problem is.... the vibrator goes on and of, causing the relay to switch on and off as well... i think, a self latching circuit to be incorporated, then switching off with a timer cicuit.....
great circuitry.... and perfect.... only one thing... that specific phones is obsolete her in South Africa..... However ... if it can be modified to work with the Samsung GTE 1080.... then let me know how to do...