This is because with JIO sim if you are using default profile , you will not be able to select band. For manually selecting band you have to first create a profile manually for JIO sim.

@Kevin_Z Kevin_Z wrote @Anshuman_5 This seems you can get the internet access when you choose the default profile, am I right? If that is the case, may I know the reason why you create the profile...

@Kevin_Z Yes the SIM carrier is Jio screenshots of status page and default profile page are given below.

In the system log there are around four hundred warning and error messages like : WARN: Cannot find isp profile, set nothing. ERROR: Not found any profile. I have created profile correctly and I am...