Capture HTTPS Traffic without decryption of SSL connection

Hi, I have a question regarding usage of MITM proxy with BrowserStack infrastructure.

We test mobile applications, and for automation purposes we decided to use MITM proxy and BrowserStack. Browserstack doesn’t allow to install the certificates on the devices, so MITM proxy won’t intercept HTTPS requests. There is a script which is downloaded using secured connection as soon as our mobile test app is opened. MITM ignores this request, so we can’t use this mobile application at all.

As @mhils says that MITM can’t track HTTPS requests without certificate being installed on the devices, does it mean that MITM can’t be used in BrowserStack infrastructure in our case?

Thank you in advance for the answer.