Firebase In-App Messaging, Test on Device not show up on real device

Question

I am starting to utilize the In-app messaging feature of firebase.

I didn't create a real campaign yet, but only use the the [Test on Device] when creating one. So this issue is not related with in-production campaign, but [Test on Device] feature.

The message does not show up on a physical device, but showed on a simulator.

I could not move forward since our application is already in production, and I need to confirm the result before put a real campaign online.

My env/condition is following:

1. Firebase version is 9.0.0
2. Analytics is installed
3. Installation IDs are correctly filled, as I could confirm the message in simulator.
4. in docs, it said we should confirm the message

[Firebase/InAppMessaging][I-IAM180017] Seeing test message in fetch response. Turn the current instance into a testing instance.

But there is no such log in the console.

So anyone succeeded test the message on the real device, please share your experience.