im sorry im not so good in english .i've told that i can't receive messages and calls . then , i can't send new msg or call out .
but after i reset all setting . my device seems to be good. in 2 days, i has reset my iphone 2 times. i've went to my coverage centre , is there anyting problems with my micro sim. they said theres no any problems with the network . *sorry for my bad english.