Since Google owns Android, this is usually on by default, but here’s how to double-check: Open your app. Tap Passwords & Accounts (or "Users & Accounts"). Select your Gmail address . Tap Account Sync .
Read an email on your tablet, and it’s marked as read everywhere.
If your Google Drive is 100% full, syncing often stops. Enable Google Sync On Gmail Account
If your digital life feels like it’s living in two different worlds, it’s time to flip the switch on . Here’s the quick and dirty on how to get your Gmail, Calendar, and Contacts talking to each other across all your devices. Why Bother Syncing?
Syncing Your Life: How to Enable Google Sync on Your Gmail Account Since Google owns Android, this is usually on
Enabling Google Sync is the single easiest way to stop managing your technology and start letting it manage your schedule for you. Set it once, forget it, and enjoy the harmony.
Toggle on the services you want (Gmail, Calendar, Contacts, etc.). On iPhone (iOS) Tap Account Sync
Ensure "Auto-sync data" isn't turned off in your phone's battery-saver mode.