Cellular Data Drops After ColorOS Upgrade on OPPO Devices

🔍 What Users Are Experiencing

Commonly reported behaviors include:

• Mobile data disconnects while signal bars remain visible

• Apps are unable to access the internet until Airplane Mode is toggled

• APN settings are resetting or becoming misconfigured after the update

• LTE/5G reconnects only after a manual toggle or device restart

⚠️ Why This Happens After an Update

Major system upgrades can temporarily disrupt network configurations. In some cases:

• Network and radio profiles fail to re-bind correctly

• APN settings revert to default or conflict with carrier values

• System services responsible for cellular connectivity become unstable

These issues are usually software-related and not caused by hardware faults.

🛠 Recommended Solutions

Try the following steps in order:

1️⃣ Verify APN Settings

Go to: [Settings] > [SIM & Network] > [Your carrier] > [Access Point Names]

• Ensure the APN details match your carrier’s recommended settings

• If unsure, select Reset to default or contact your carrier for the correct values

2️⃣ Reset Network Settings

Go to: [Settings] > [System] > [Reset Options] > [Reset Network Settings]

This will refresh all mobile data, Wi-Fi, and Bluetooth configurations.

⚠️ Note: Saved Wi-Fi networks and Bluetooth pairings will be removed.

3️⃣ Toggle Airplane Mode

Turn Airplane Mode ON for 10–15 seconds, then turn it OFF.
This forces the device to re-register with the network.

4️⃣ Update System and Carrier Services

• Go to [Settings] > [About Device] > [Software Update] and install any available updates

• Open the Google Play Store and update Carrier Services, if available

📌 Important Note

If the issue started immediately after a system update, it is unlikely to be a hardware problem. In most cases, the cause is temporary software configuration drift following the upgrade.