[Q] [How To Fix] MTK6577 Problem with "no sim card 3G Data "

please help me master ..........!!!!

I ported rom from OPPO R817T for Lenovo A390 and everything is working, except the issue of 3G data.
I have to replace from stock rom and the signal was already out . but in setting can not be set 3G Data

and every time I make a call * 123 # signal is lost and changed to "no sim card"

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