Do you, or did you ever have any type of VPN setup? It sounds like your phone is trying to route through a proxy that is down or no longer exists.

Have you tried it on a different network?

 

You are sure that WiFi is connected? How about a data manager? If you have one, it might have detected a threshold and turned data off. (Just guessing).

 

I use Mint Mobile and never experienced anything like that. In fact, I don't remember setting up APN settings, though it was a while ago that I switched. If it won't connect to wifi without the apn and sim installed it sounds like something other than the carrier.

 

Just to be clear, you are connecting to a home WiFi access point/router and other devices also connected to it can connect to the internet? Have you ever set a static IP for this device?

I'd try rebooting the router, too.

 

True enough, but @Brock297 lost all internet connectivity whether coincidentally or symptomatic of a larger problem.

While I agree that mobile data and WiFi are completely separate connections, what do they have in common that would make them both stop simultaneously? The reason I was probing WiFi for an internet connection was to rule that out since it's usually the simpler to troubleshoot and more reliable of the two. If @Brock297 truly does have a WiFi connection and/or a Mint data connection and still can't connect to any external data sources, then there is something going on like a bad proxy, missing or misconfigured VPN (or blocked VPN account) or ...?

 

If he is connected to a WiFi router with no internet connection it doesn't matter if there is a data connection. Android will try to use the WiFi connection for data. @Brock297, do you need to be authorized on the network for internet access? Do you need to sign in? Have IT enable internet? Something like that.

Conversely, if you turn off wife and insert the Mint sim can you get data?

 

@Brock297 in many ways this is analogous to a laptop with both a WiFi and a wired connection to a network. While the end result -- getting to the internet -- is the same, the systems are fairly independent. Since your work router is 99.44% likely to NOT be using the same network as your Mint SIM card, and we assume that the simultaneous loss of connectivity is from a common cause, then there are much fewer things to consider.

As I stated VPN or proxy connections gone bad, data managers shutting down connections because of quotas, although that generally doesn't effect WiFi, you could have a security or firewall app throwing up a block, too. Sometimes these kinds of problems require a lot of troubleshooting, sometimes more than they're worth.

At the end of the day a factory reset without know the cause (as long as you back everything up first, right?) may be your easiest solution.

Of course there's always the remote possibility of your SIM card and your WiFi adapter failing simultaneously, but unless you forgot to tell us that right before this started you accidentally put your phone in the microwave, I'd say it's not too likely.

 

Okay, then your own work network is blocking you and the settings for the Mint network might not be what you think they are ... or for some reason Mint suspended your data ... or, maybe the sim went bad. In any case, it's time to check with Mint.