I took my watch off some 30 years ago. I wonder if my phone accelerometer is sending data to some company. I'm pretty careful about which apps I install and I l

I took my watch off some 30 years ago. I wonder if my phone accelerometer is sending data to some company. I'm pretty careful about which apps I install and I logout from everything (not Google Play of course) and yet I don't trust every single app on my phone (banks, there is little I can do) or Google.