Q: I can make a call by FB but cannot by SIM

Hi There,

I have iPhone 5S. i bought it 3 years ago. I did not used this phone a year then try to used it but battery died and i replaced it. Also I replaced display.

i upgraded latest OS version. it's works fine few week then met a issue. When i receive call usually morning, play crackling noise and i cannot make call.

afternoon it's become normal. After few days I cannot make call by SIM (GSM call), i replace my SIM but still cannot. did not heart any voice both side.

Then I switch on GSM data then make a call by facebook, it's working normal and can hear both side.

What happening in my phone?

Now when I dial by SIM, "calling..." message did not appear immediately and display freezed and it's become normal after 10 second. that period B number already answered my call and duration started but both side did not hear any voice!!!

Please help me.