No network

[mohd basel maraqa]

When i update my phone on this morning, there was no wifi connection and the wifi button is greyed out.
I have tried putting plane mode on and off, and have tried switching the phone off completely and then on again.

Another iPhone, and my iPad, is connected as usual to our home network.
Any ideas, please?

 

[mohd basel maraqa]

And i tried to Hold sleep/wake button and home button at the same time but it doesnt work( plz helpp