I have those same symptoms.

My S4 will lock out a WiFi spot if the signal becomes "unstable" and then switch to 4G. Some people report having this happem even when they are sitting right next to the router.

My Samsung Galaxy Note 10.1 (2012 edition)...which is running 4.1.2 (I think)...stays locked onto WiFi and rarely switches to 4G here @ home or @ church.


I Love FEATURE 00