Why my Wi-fi feature won't work and why it's effecting my 4g lte?

[Android Central Question]

I have a Galaxy S8+ with Verizon. If my Wi-fi is turned on, I can't receive texts, calls, or browse the web. If I just have my mobile data turned on, I can do all of the above. I tried turning my phone off and back on, I tried resetting the router and it's working for all of my other devices, and my system updates have been applied. It still always says "internet may not be available" and causes my data to malfunction. I have had this phone for months and this was not an issue until this morning. Can someone help?

 

[B. Diddy]

Welcome to Android Central! Does the wi-fi work on other networks, like your local library's public wi-fi?