When I try to access Secure browser on iOS to G-suite, I got the following Error.
This user-agent is not permitted to make an OAuth
authorization request to Google as it is classified as an
embedded user agent (also known as a web-view).
If you encounter the error as shown above, please try with the methods below.
1) Update HENNGE Secure Browser to latest version
2) Click on Setting (Gear icon) located on the bottom right of HENNGE Secure Browser interface, and turn on "Use Safari User-Agent".
3) Restart HENNGE Secure Browser App
※Note that there maybe future changes along with the specification of G-Suite OAuth 2.0.