Which Mobile device do you use on your side? Android device or iOS device?
When do you want to display the information bar within your Mobile device?
Do you want to display the infomation bar when you open PowerApps Mobile App or run a specific app?
If you want to display the infomation bar when you open PowerApps Mobile App from your phone as below:
In default, the infomation bar would be displayed automatically here. If here is your issue, I think your issue is related to your Mobile device's configuration rather than PowerApps Mobile App itself.
If you want to display the infomation bar when you run a specific app, I afraid that there is no way to achieve your needs in PowerApps currently. In default, the specific app would be running in a Full screen, the information bar would be hidden automatically.
Yes I am using an Android and iOS.
I want to display the information bar when running a specific app I created in PowerApps.
Ok thanks for confirming my assumption of how it works currently. But needs to be done to change this? Is it on the development roadmap for PowerApps team at Microsoft or should we submit a request for an enhancement?