So based on this no carry forward of data. And premium numbers would cost money which as many folks have stated doesn't apply on 1860 series at least. Video calls etc would consume allocated data.
It works when we dial the number starting with 2222.
For example : Mtnl customer care number is 1500. When I dial 1500 from Jio landline it says the number is invalid.
When I dial 22221500 the call gets connected.
I had a mtnl connection before I took Jio Fiber. So if I had to call Mtnl customer care from my mobile, I had to dial 2222 before the four digit number.
Obviously the area code had to be dialled before that.
For example : The customer care number to change mtnl plan is 1504.
So I had to dial 022 2222 1504 from my mobile. (022 is the area code for Mumbai).
I don't know if 2222 works outside Mumbai.
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