When I bought the phone and tried to connect to my wifi network it worked fine, but after 2 days, I don't know why, it just doesn't detect my wifi network.
When I go into
Settings->Wireless & network Settings-> Wi-fi settings my network doesn't show up there. Lots of other networks appear there but not mine.
I tried configuring manually with SSID WPA/WPA2 PSK and it says not in range. After this I tried rooting phone but still no luck.
I have a Galaxy SII and 2 other computers working correctly with my network. What's causing the WT19i to be unable to find it?