I upgraded my Note 3 to Lollipop 5.0, Now it has network issues. What should I do??

[AC Question]

I updated my software to Lollipop 5.0 last week and since then I am facing issues with network. Since 7 days theres no network on my phone. Please help.
I am using SM 900
Thanks

 

[belodion]

Welcome to Android Central.

What are the things that you've tried so far?...so that we don't go over a lot of unnecessary ground.

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