IMessage And Icloud Problem?

Services like iMessage And Facetime was working fine on my iphone 5s ios8.3

today but somehow my Wi-Fi went down and i started 3G

but when my Wi-Fi again started i can't login in icloud keep getting system verification error

and my iMessage nad Facetime Also not working now kindly give best possible solution to again make it work it on Wi-Fi.

Activating and deactivating the iMessage and the FaceTime again might help. If not, the solution to most problems will be turning off the device and turning it on again.

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