WIFI not Connecting on my Samsung S Duos My home networks says Saved, Secured but when i open internet it says no internet connection
First check whether its just the Wi-Fi on your phone or the LAN on your System.

There are many possibilities with the Wi-Fi not working properly.


Either the key is not matched with the key you configured under your modem Wi-Fi password.
Signal might be weak. ( if signal&lt;=10% then some devices Wi-Fi
connection is disabled to save power)
In-appropriate configuration of your modem due to which although the
connection might be established you might not be able to browse
thereby showing no internet connection.

For this reason Wi-Fi is termed to have very least preference because of heavy loss of Data during the transmission or disturbance.

Solution:-
If you signal is weak try to get more strength by getting near to
    you Wi-Fi or having an external hardware that could boost your
    signal strength.
If the key is not matched then you need to enter the appropriate the
password as set by you.
If the connection is not configured then you need to check your
manual and Configure the Wi-Fi settings properly and click forget on your old Wi-Fi network to re-configure the network on your device.