Chosen Solution

The Wifi on my phone is able to connect with available networks, but is not transferring data on it’s own as it used to. E.g. I have to switch to Cellular Data every morning to see new emails that came overnight, new messages I received on my apps. Sometimes it connects and transfers data normally when I ask it to, e.g. when I open my YouTube app and play vidoes. But it doesn’t do the same on other apps, e.g. won’t download new messages even if I refresh. I’m not sure if it’s a hardware issue or software issue. Suggestions? Thanks

Delete your current wifi connection, then recreate it. That should fix it.