Today, at 7 AM when I sent SMS to my 20 friends. All the SMSes remained in Outbox with "unable to send" notification.I thought by restarting my phone, everything will be OK.But, again the same problem occurred. Afterwards when I personally asked my 2 friends who were having Reliance GSM told me that they are also not able to send SMS and also unable to make calls.But, we all were receiving SMS and calls.When tried to call Customer Care (198), "No answer" immediately appeared as I pressed call button. No ring, nothing.Same happened with *333.Then, afterwards around 09:27 AM. This issue was solved.Anyone else experienced this?