Hello I have a Nokia Lumia 820 phone but lately I am not able to connect to my WiFi at home. It's keeps tell me connection unsuccessful and can't connect. I did everything restarted the router, restarted my phone, deleted the router name from my phone and tried to re-enter the password and I'm not connecting. Can you please tell me what is the problem and how to correct it? So I can connect to my WiFi. I need to connect to my WiFi as data is more expensive to to certain things on a mobile phone
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