Can not login to instagram after updating to ios 9.3 (also 9.3.1) and can not open Inbox

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Hello everyone,

I am using ipohone5

I am not able to login to Instagram app after updating to ios 9.3 and 9.3.1.

The error (IGFoundationNetworkingErrorDomain erro - 1011)

And for Inbox (app) the error is: Network Unavailable).

Kindly let me know the solutions.

Thanx and rgds