Mobian User Agents:

Mobian defaults to desktop user agents, it is best to use user agent switchers and replace the os with android.
Unfortunately just changing the ISA from x86_64 to aarch64 is not enough.

Vivaldi:

Mozilla/5.0 (Android 16; Mobile; A6013) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/146.0.0.0 Safari/537.36 Vivaldi/7.9.3970.55

Firefox:

Mozilla/5.0 (Android 16; Mobile; A6013) Gecko/20100101 Firefox/149.0

Sources:

https://www.whatismybrowser.com/guides/the-latest-user-agent/android
OnePlus 6t model numbers : r/oneplus
OnePlus 6T - Models and versions | PhoneMore

Date: April 20th 2026

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