Nobody has actually answered OP’s question - I’m using a regular Jio SIM in my 5G CPE modem on band n78 and getting a solid 2.4 Gbps here in Navi Mumbai, at first just like OP it didn’t work - At all - But worked just fine in every other 5G capable phone like my personal
iPhone…
The problem is Jio blocks non-mobile phone TTL (using Deep Packet Inspection - Yes it surprised me too they make such effort as DPI is expensive), so you have to go into the modem /
router settings and change the TTL so Jio thinks it’s a phone and not a CPE modem / hotspot etc, then you get unlimited full speed 5G standalone for a few rupees a month… Last month I used 1.4 TB of data according to Home Assistant.
Not all modems are capable of this… Personally I bit the bullet after a decade of paying for messy
NAS boxes, Plex servers, router and modem upgrades every few years etc and so I just built my own combo modem / router / firewall / switch / NAS / media server using an old
Intel NUC and an 8 port 2.5Gbps switch running free ... One tiny box replaced an entire rack of stuff using some virtualisation in Proxmox. Hardest part was getting the M.2 5G SIM module, but Mouser are already selling thousands of a few types wholesale in India, so you don’t have to buy
Huawei stuff from China via
AliExpress and deal with the import hassle
You can also just use TLS 1.3 but that depends on the devices you have on your WiFi network at home.