How to fix the Wi-Fi on your Pixel phone
How to update Pixel phone software
Open your device’s Settings app. Tap Security > Check for an update: To check if a security update is available, tap Google Security checkup. Follow any on-screen steps. Your system will report back as being up to date, or with an update pending. Once an update is downloaded, you may receive a notification to reboot your phone.
To check if a security update is available, tap Google Security checkup.