Detect ios opera mini with javascript

Question

I need to block specific script from execution over IOS opera mini browser.

navigator.UserAgent does not allow to clearly identify this browser. It returns somerhing like this: Mozilla/5.0 (iPhone; CPU iPhone OS 7_1_1 like Mac OS X) AppleWebKit/537.51.2 (KHTML, like Gecko) OPiOS/8.0.0.78129 Mobile/11D201 Safari/9537.53

Ipad pro and iphone 5 se user agent not include nor 'opios' nor 'opr'

How to detect it correctly with javascript?

Answer 1

The Opera Mini user agent on iOS can be identified by the string 'OPiOS'.

It's not possible (to my knowledge) to reliably feature detect for Chrome vs Firefox vs Opera on iOS because they're all forced to use UIWebView or WKWebView, so the features one might attempt to detect differences in are all identical.

Chrome & Firefox have adopted the same pattern, using 'CriOS' and 'FxiOS' respectively.