A. 1. Use cloud backup: If the app supports cloud backup, ensure you have backed up your data on the old device before switching. Log into the same account on the new device to restore data. 2. Check for export options: Look for an option to export your portfolio data from the old device and import it on the new device.

B. 3. Manually re-enter data: If no backup is available, you may need to manually re-enter your portfolio data on the new device.