This mobile is not working properly

I have a techno N2 mobile problem is hotspot option not working as well as not height ligt. I'm service centre go there but employe told me that software will be updated but 50% chances to ur mobile service.but I m not understand employe talk ..software update ...OK but mobile damage I don't know.so please solve my problem.in Gwalior ( M.P.)

I bought a new mobile but mobile display are not working so i want to know how can work my mobile.

I have bought phone from other city...its having warranty right now...and it's screen is damaged..can it be repaired free of cost

My phone screen is damaged...and its under 1 year warranty...I purchased it from other city...could it be repaired under warranty at gwl service centre

Want to buy a smartphone tecno pova 5g