I have recently purchased Sony Ericsson vivaz and I use to connect my old device with my WIFI router and it was working perfectly. But after that when I bought this mobile phone I am not able to connect it with WIFI. Whenever I try to connect it at that time it gives me message that connection is not secure even when it is secured connection. I am not able to solve this problem. Please tell me what I should do to solve this issue.
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