Will 4G phones support 5G?

The indigenous 5G testbed project funded by the telecommunications department has reached its final stage and is expected to be completed by December 31, 2021 . After that, 5G services will be rolled out in India.29 Ara 2021

So, the simple answer (for, will 4G phones work on 5G network) would be 4G mobile phones have a technology which can only catch 4G or below technology, but if you own a 5G mobile phone then you can use 5G and below technologies like 4G, 3G, 2G and 1G as well .

Most popular 5G bands in smartphones in India are N77 and N78 . Both of these bands rest in the mid-range. Having said that, there are phones available in the market that offer around 13 5G bands but you should know that the band-frequency matter more than the number of bands offered.