No, one account and same phone number will not work for two phones.
Try deleting your current Wi-fi connection, reboot your S4 and reset your wi-fi connection to your router. Also if you can go into router settings and recheck all settings that may help. The 2.4 ... See more...
Try deleting your current Wi-fi connection, reboot your S4 and reset your wi-fi connection to your router. Also if you can go into router settings and recheck all settings that may help. The 2.4 GHz band will give you a good signal at a nice speed. You should already be doing better than 40 on all phones if your signal is strong and router ok.
My phone bill ..