Samsung no network Solution

no network error show many reasons one is imei number which i describe in previous post, now i tell one more reason to held this error, in which some time we select option only WCDMA / or 3G or 4G signals, and if in that place 3G or 4G facility not available then too you have show no notwork, and you disable to attend any call or dial a number of any other.

if no network error held from this reason then its solution is very simple: 

1)going in setting

2) after that going in more networks

3) after that network mode

then new window open here you see 

selected option is WCDMA only

or may be possible GSM only

you need to select WCDMA/GSM (auto connect)

now check for calling anyone, problem solved...