Sorry you are having wifi issues. Here are the things you can try:
make sure wifi is turned on
make sure you do not have Airplane set on
make sure you are in a location that is not blocking the router signal
since you reset your network/router turn off your phone and turn on
if none of those work delete the current setting/password and re enter (tap settings, tap wifi, tap the name of your network, tap forget this network or you can tap renew lease to see if that may reset for you
Let us know if any of this corrects the issue.
Mike