@Mr. K Welcome. We're all noobs. But eager learners
Firstly FTTH here in kerala has been having quite a lot of inconsistencies since last 2+ months. Like a server (steam in bglore) is now at 40 ping for me. The same was 80 ping 10 mins before.
Netflix speed issues, botnet issues etc etc. (There are threads for them). Hopefully these will get fixed soon. Till then, sadly, the inconsitency is here to stay.
Ive also been using telegram and I've also felt its download speed fluctuates a lot. Generally on the slower side. So I'm guessing its a telegram specific issue.
As you might know, max download speed would depend on the slowest link that is in use in between. Your
router is an older / slower one (N band.) Though it should be workable for speeds upto 50 mbps, an upgrade to a dual band router is recommended. (There are router threads in the forum for helping pick one.)
Yes, Your friend is right. Play store should ideally give you full download speeds. As should popular torrents with a large number of seeds. I tested a popular one yesterday, (inspired by
@partymonger, for research purposes only
) and you should be getting full speeds. I'm on the same 100 mbps plan from here in trivandrum.
Sadly BSNL customer care isnt very dependable. Only option is to get ones hand dirty.