It has several questions where the answers say that it only works with Huawei and also say the product details: Matching brand: Huawei What did you expect?

Unfortunately, we cannot guarantee this compatibility 100%. We can only guarantee 100% compatibility with the Huawei Mate 10 Pro, for which the adapter was also designed.

According to our research, yes.

The Huawei P30 Pro has a USB C port. So that should fit. Of course, it could be that it doesn't work. Therefore: Unpack it cleanly (do not tear open the packaging), test it and send it back to Digitec if it does not work.

Yes

I tried it on a Galaxy Note 20 Ultra. The phone is very close to the S 20. Does NOT work!!! (Unfortunately, wanted to keep using my Beyerdynamic).

Wurde bereits einmal gefragt und positiv beantwortet: https://www.digitec.ch/de/s1/QuestionAndAnswer/bonjour-est-ce-que-ce-produit-est-compatible-avec-le-huawei-p30-pro--189530

TRRS

Such adapters probably do not exist. I can't find anything like that on Digitec or via search engines.

Well: I don't know if it works specifically with the Insta360. However, I have tried it with the Huawei Mate 20 pro. Although all headsets and headphones work, the connection to a dedicated microphone does NOT work. Tests with other TB and USB C ports on PCs have shown that neither microphones nor headphones can be connected to the ports. So I wouldn't try it...

I just leave the adapter on the headphones all the time, then I don't lose it.

yes

Sorry I don't know, I am using it with a Huawei product.

Not sure because I got screwed with my Pixel 2 XL which doesn't accept it.

With my Huawei Mate 10 pro, I can connect third-party headsets (in this case, rather old Nokia headphones with a mic) to the adapter and mic input works without any problems.

Is this a question?

On my HTC U Play, the message "not compatible with this device" appears. not compatible" Conclusion: not to be used! Only trouble and costs!!!