My phone is disconnecting my wifi and reconnecting frequently but won't connect. I'll need to manually turn wifi off and on to connect again.
My PC is working fine, this only happens with my phone.
I also had this issue before and i fixed it by changing some router setting's.
On your WiFi router's settings change the security type and experiment with it and find the best one for your. For me i switched to WPA+PSK and it's ok so far.