I have but it's only used when excitel is down. I mostly keep it for backup and landline. I would have to disconnect excitel to get on airtel. What do you want me to check? Airtel vdsl link remains down routinely so I don't like using it much.
in my area jio didn't lay any wiring. they did dig up the holes and to my knowledge they were the old reliance communication ofc which they dig up and then deployed the JioFiber on the poles connecting the end to those ofc.
So basically, Reliance Comm. had OFC in our area for years... but were inactive.
JioFiber team comes, dig those fiber out (to take out the end of the wire).... connected their over-the-pole wiring to that....
provided connection to houses using over-the-pole way.
This might be the reason for your ping and speed issue.Using old Fiber lines. I don't think Jio is doing that in anyone else's area. They previously had no presence in my area so there is no possibility of upgradation. Same with Airtel. New wiring was laid. No VDSL or V fiber wires were used for upgradation.