In my game that I developed with Unity and uploaded to the Play Store, the device freezes when the internet is on. I think the problem is caused by admob ads. Because when I play the game when the internet is off, I don't have any problems. Likewise, when I install the apk I bought for trial, I don't have any problems.
Below is the ad script I used. This script is called at the start of every scene, in the main scene shop scene and level scenes.
I'm adding the game link so you can enter and try it if you want. https://play.google.com/store/apps/details?id=com.CodiaGames.RollerDriver