Why does my WI-FI disconnect when my Samsung Galaxy Note 5 phone is locked?

[Android Central Question]

Hello!

My phone is Samsung Galaxy Note 5. Whenever my phone is locked, the WiFi disconnects. I have made sure that in the Advanced WiFi setting, Keep WiFi during sleep is set to "Always." I am having a really hard time as my phone locks within 30 seconds and I always have reconnect the WiFi. All the WiFi networks are auto reconnect but they don't connect unless I turn on and off the WiFi several times.
Can anyone suggest a solution?

Thank you!

 

[B. Diddy]

Welcome to Android Central! Any power-saving modes turned on? Or wi-fi manager apps?

 

[beth9]

Power saving mode is off. And no wi-fi manager apps.

 

[B. Diddy]

Does it also happen in Safe Mode? https://support.t-mobile.com/docs/DOC-27639

 

[beth9]

I actually reset my phone and the wi-fi is working fine now.

Thanks!