I know this will seam like a very basic question. However, can someone tell me how the right way or the best way to turn off iMessage completely is? I am finding iMessage to be very unreliable. People have reported not receiving my texts. And I have often not received theirs. It's not worth the hassle. The main reason I enabled it was to be able to SMS from my desktop/iMac. Please help if you can. Thank you.