Speed drops 5-6 times a day & I am forced to reboot the JioFi router

True, just giving some hope(fingers crossed) in times like this. No matter how much spectrum operators buy, it will never be sufficient.

I mean even if the government allocated spectrum for free to these companies, they’d be unable to use it. Historically, there’s never been the drive for any of these companies to fiberise their towers. Add a micro transceiver, link it to a base station, and repeat. Hey, you’re getting 4G on your device now, I guess just be “grateful“? Jio is the only company to have ever shown the other fools that the compete or die principle isn’t going to evade them forever in India. I’m thankful to Jio for that.

Wait so they don't run Fiber to all towers ?

Nope. It was ideal, but never a requisite. They use a micro transceiver. It's basically a thing that looks like a 1.5m dish. It uses very high frequency 26-28 GHz and sort of acts like a wireless fiber link. So you may get the bandwidth, but at the cost of latency.

It is going to be insufficient in metro cities I guess.

In Cities and Towns Jio has atleast 80% Towers Fiberised.