Data connectivity issue on Marshmallow update

[AC Question]

Hi I recently updated HTC 820 dezire to marshmallow 6.0.1
After the update, my cellular data is not getting connected

Can anyone help on this??

 

[Rukbat]

Wait for 6.0.2. Seriously. There's been so many data and wifi complaints about 6.0.1 that it's probably the worst version of Android anyone ever picked up off the floor. (Anyone who claims to have "written" it should cut off his head in shame. My very first program didn't have as large a percentage of bugs. [Then again, I was actually TAUGHT how to write code.])