To resolve the issue of your new device not working while the old device functions properly, follow these step-by-step troubleshooting actions:

1. Ensure both devices are updated: Check if both your old and new devices are running the latest operating system. For Android devices, go to Settings > System > System updates. For iPhones, go to Settings > General > Software Update.

2. Check connectivity issues: If your new device is not connecting to the internet, ensure Wi-Fi or mobile data is turned on. Go to Settings > Network & Internet and verify your connections.

3. Restart both devices: Sometimes, a simple restart can fix connectivity or initialization issues. Hold down the power button on both devices until you see the restart option.

4. Use the correct transfer method: If you are attempting to transfer data from the old device to the new one, ensure you are using the right method. For Android, follow the instructions provided in Google Help - [learn more]. If you're using another platform, ensure that the specific transfer method is suitable for both devices.

5. Reset Network Settings: If there are issues connecting to the internet or transferring data, resetting network settings on the new device might help. Go to Settings > System > Reset options > Reset Wi-Fi, mobile & Bluetooth.

6. Factory Reset the New Device: If the issue persists, you may want to perform a factory reset on the new device. This can be done by going to Settings > System > Reset options > Erase all data (factory reset). Ensure you back up any information before proceeding.

7. Check Account Login Issues: If you can access the old device but have trouble with accounts on the new one, ensure you are logging in with the correct credentials. If necessary, try logging in via a web browser or creating a new temporary account to bypass potential issues (source - [learn more]).

8. Contact Customer Support: If your new device still doesn’t work after performing these actions, consider reaching out to customer support for your device manufacturer for further assistance.

These steps are designed to address common issues when transferring from an old device to a new one.