My mobile network doesn't work.

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I had been encountered awful network problem in Lumia 535ds from 2 months.

There is problem with both incoming and outgoing calls .

I tried every method, by remove, clean, exchange sim card with other slot. Nothing worked.

No towers are being seen.

I'm confused, is that my phone problem or Sim card?!

\lllll/
Please Don't quote unnecessary replies.

 

[Chintan Gohel]

this happens regardless of where you are? Inside a building or on the road or a few km from home?
Have you also tried a different carrier?

If yes to above, then the phone is the problem and a repair or a replacement should take care of it