I got a call now. And, I succeeded in fixing the situation where a call can't be got.
#1
Booted the mobile phone in the situation in which WIFI connection is turn on. Then, can get a call on WIFI or 3G network.
#2
Booted the mobile phone in the situation in which WIFI connection is turn off (3G is ON in this case.).
In this case, can't get a call on 3G network. Then, even if after turn on WIFI, can't get a call.
Is this #2 behavior based on this server's spec?
I need use only 3G. So, please teach me about #2.