Lumia 640 xl dual sim cellular internet data problem?

[1Ishara]

Hi guys.. I have read 640 xl threads regarding dual sim variant (RM 1067-1011) cellular data problem. I am also face same kind of problem. Most of time I couldn't get proper data connection. Because of that I can't update windows apps and surf internet properly. Cellular data come randomly then then its not work. Then I have to restart my phone to work cellular data. There is no apn problem. I have checked it. I have also reset my phone phone using Microsoft recovery tool but same thing happen even I have check this with windows 10. But in same place same sim my note 3 have proper cellular data connection. But this matter didn't effect for my calling or massage experience.

So if you guys know hove to resolve this problem. Please help me..