I have the Verizon Galaxy S3 and have been having issues with my Wi-Fi. I have it turned on and connected to my personal home internet and at any given moment, wi-fi shuts off and turns on 4G network and will then turn wi-fi back on. However, this interrupts downloads, backups, etc and is very frustrating. What settings do I need to adjust to keep wi-fi connected when in range? I have all the basic settings for wi-fi already on, any hidden settings that could help? PLEASE let me know I can't afford to waste data while the internet is under my roof!!!