Yesterday evening my android phone (Google Play Services app) asked me to log in again into my account due to "security changes" (I don't remember the exact wording used).
I double checked it was the real app and logged in again (I went through all the authentication steps, including 2FA through SMS that was automatically picked up by the app).
I then checked all my account activities and security settings, and found there were no signs of access or edits other than my own. Everything looked perfectly fine, including linked devices and apps.
Should I worry, or is this a random check by Google to see if my access from the phone is still valid? (Or maybe Google Play Services just lost an auth token and asked me to log in again?)
Example of sign-in request: