When contacts stop syncing on your OnePlus 15, new numbers may not appear, and recent changes might disappear across devices. This can make calling or messaging frustrating, especially if you rely on cloud backups. In most cases, the problem is caused by account, sync, or background restriction issues, and you can fix it with a few focused steps.
Why Contacts Are Not Syncing on Your OnePlus 15
- Sync is turned off for your Google account.
- Background data or battery optimization is restricting Contacts.
- The wrong default account is selected for saving contacts.
- A temporary system or app glitch is blocking sync.
- Network connection is unstable or restricted.
1. Make Sure Contact Sync Is Enabled
Contacts will not update if sync is disabled for your account. Turning it on ensures changes are uploaded and downloaded properly.
Open Settings, and then tap Passwords and accounts.
Tap your Google account, and then make sure Contacts sync is turned on.
2. Check Your Internet Connection
Contacts sync requires a stable internet connection. Weak or restricted connectivity can stop the process midway.
Open Settings, and then tap Wi-Fi or Mobile network.
Make sure you are connected to a stable network, and then toggle the connection off and back on.
3. Set the Correct Default Contact Account
If contacts are saved locally instead of your Google account, they will not sync. Setting the correct default account fixes this instantly.
Open the Contacts app, and then tap the profile icon.
Tap Default account for new contacts, and then select your Google account.
4. Disable Battery Optimization for Contacts
Battery restrictions can silently block background syncing. Removing these limits allows Contacts to update normally.
Open Settings, and then tap Battery.
Tap App battery management, select Contacts, and then set it to Allow background activity.
5. Force Stop and Clear Cache of Contacts
App cache corruption can interrupt syncing. Clearing it refreshes the app without deleting your contacts.
Open Settings, and then tap Apps.
Tap Contacts, then tap Storage usage, and clear the cache.
6. Restart Your Phone
A restart refreshes system services tied to account sync. It is a simple step that often resolves lingering issues.
Press and hold the Power key, and then tap Restart.
Wait for the phone to boot up, and then check if contacts begin syncing.
Contacts syncing issues on the OnePlus 15 are usually easy to fix once the correct account and permissions are restored. After completing these steps, your contacts should update across devices again without manual effort.
FAQs
Why are only some of my contacts syncing and not all of them?
This usually happens when contacts are saved under multiple accounts. Contacts saved locally or under a different account will not sync unless moved to your Google account.
Does clearing the Contacts cache delete my contacts?
No. Clearing the cache only removes temporary files. Your contacts remain safe in your account.
How long does contact syncing usually take?
Syncing usually starts within a few seconds after enabling it. Large contact lists or slow internet connections may take a few minutes to complete.
