One antenna has a small crack and hence is a bit loose.
The nano to micro sim adapter is slightly broken, but gets the job done. I can’t think of a reason why any other adapter from jio/airtel wouldn’t work.
Also supports OneMesh, I have tested it.
Have used it for a year when I was staying in a place without broadband. Didn’t use it after that and has been sitting in my drawer ever since.
A classified of airtel 4g lte router reminded me I have something similar, which can be put to use by someone.