ad pop ups on wifi but not cellular

[ger19]

My wife plays a game that will generate an ad by feeding a pop up using Safari. To eliminate the ad/Safari pop up, she switches her phone from wifi to cellular and the ads go away. Conclusion is that some function in the cellular mode prevents the pop up. I tried to figure out how to prevent the ads while using wifi but have not yet succeeded. I installed a content blocker and I turned off pop up in Safari. I'm not sure what else I can do and am perplexed as to how the ads are suppressed using cellular (t-mobile) and not on wifi. Any ideas on how best to proceed?

 

[BrianBaughn]

You might be able to get good results by using AdGuard's DNS settings on the iPhone for the wifi network.

 

[Bigwaff]

I'm not sure what else I can do and am perplexed as to how the ads are suppressed using cellular (t-mobile) and not on wifi. Any ideas on how best to proceed?

More than likely you have opted-in or turned on T-Mobile service Web Guard

Web Guard device content filter

Web Guard is a free service that can be used to restrict adult content from being seen or accessed by individuals under 18 years old.

www.t-mobile.com