Phone having problems with public WiFi, how to fix it?

[Artistea]

I have asked this question before but havent gotten any good answers. I really need help. My phone has problems with anything related to public WiFi, or just using the internet outside the house in general. And the thing is, im not the only one. My mother has the same issues with her phone. I have a galaxy s7, she has a galaxy s4. The first thing I see when im connected to public WiFi or when using data and try to use the internet is a page that says theres attackers, hackers, malware and risks if I continue, but I cant continue? This happens everywhere, school, stores, resturaunts, basically anywhere I can think of, and I cant get rid of it. I know its supposed to be for safety, but whats the point of a smartphone if I cant use the internet outside my house?!! Also, another thing. Apps such as Snapchat and Instagram have stopped working for me the past few days while using the phone outside the house, and I dont know why.

 

[PapaGary]

The first thing I see when im connected to public WiFi or when using data and try to use the internet is a page that says theres attackers, hackers, malware and risks if I continue, but I cant continue?

I'm guessing that it is some app that you have installed that is doing this. Have you tried booting into Safe Mode?

 

[Artistea]

I'm guessing that it is some app that you have installed that is doing this. Have you tried booting into Safe Mode?

I haven't, but I only have a couple of apps on my phone anyways, which I know aren't causing any trouble. I'll try it if I can't get any good answers.

 

[nahoku]

I haven't, but I only have a couple of apps on my phone anyways, which I know aren't causing any trouble. I'll try it if I can't get any good answers.

The answer PapaGary gave you is one of the BEST answers you can get.

Start your phone in Safe mode and see if any apps are causing your issue. If you're unwilling to even do this troubleshooting step, then how is anyone going to help you? Beyond that, most public wifi connections still require a sign in of some sort, or a registration... even on your own carrier's hotspot.

Can you post a screenshot of the warning message you're seeing?

 

[kramer5150]

Is the warning screen the same with every wifi you try to use?... can you post a screen cap of it?

The battery usage meter is a good way to see what apps are running in the background. Anything non-essential should be stopped.
Delete / deactivate non-essential carrier bloat.
Uninstall non-essential apps.

The safe mode tip is your best option though since it is reversible (unlike the steps above).