I have a Samsung Galaxy s3 mini. The wi-fi is turned on and the phone is not detecting my Trendnet 3G router at home. All my other devices e.g. laptop and BlackBery's are connecting seamlessly with the router, but not the S3 mini. How do I ascertain that the phone's wifi is working correctly. There are no other routers in range to cross reference with those.
I have had the exact problem on galaxy s3. Did everything I read on the forums from rebooting phone, router,modify router settings e.t.c. I'll cut to the chase I simply went on the playstore and installed an app called Wi-Fi fixer which resolved the problem straight away and I haven't had any problems since. Hope this helps