Lollipop update on MotoG causing no service for sim card

I was using Moto G(1st gen) phone for the past 1 year. I was using 2 sims and I didnt face any problem for 1 year. After getting lollipop update, I frequently get 'no service' for one of my sim. Initially I used to reboot the phone and it used to work. But nowadays, the issue is coming up frequently and doesnt always work with rebooting.

Any fixes, suggestions?