Show your mobile number Not Reachable

Sometimes you do not want to receive phone calls on a mobile phone,  if we close down the mobile phone into a mobile Not Reachable, he could not understand. He thinks he may not get the network. Here is the trick to make your mobile phone not reachable to all. Steps are : 

Then go to network settings on your mobile Phone; Operator selection Select the Manual. Operator SIM mobile phone that you use when you do not select the network operator. select to another operator network. Do not hold back, but back button. Do not back the back button. But Keep the back button if you do not want to Not Reachable mode. That's easy .