Adam Pash, formerly of Lifehacker, recently switched from iPhone to Android, but his phone number is still tied to iMessage, preventing him from receiving SMS text messages on his new phone from iMessage users. According to Pash, Apple support informed him that engineers are working on a fix for the problem, but don’t currently have a reliable solution.follow link
Option-click to Hide Apps Quickly
This trick has been available in the Mac OS for years, but many people still don't know it. If you have too many windows cluttering up your screen, you can hide specific ones easily as you work. When you're in any application, hold down the Option key and click on another app's window, on the Dock, or in the Finder to switch to that other app and simultaneously hide all the windows in the previously current app.
The iMessage Trap