I've had my galaxy tab 4 10.1 for a while now and haven't had any issues with it. But recently, I moved to a new apartment and my new wifi network isn't even showing up. Plenty of other networks are showing up in the building and i am still able to connect to wifi networks when i go to a cafe. My wifi works fine with all other apple/android devices. I've tried everything: reset the router, changed the security type, factory reset my tablet, turned the router off and on. I heard that changing the channels might work and I know how to change them, just not sure what to change them to without messing anything up. Suggestions? BTW am in Prague and have a Zyxel P-660HN-T3A. And yes, I have corrected the time zone too.