Yes. Please see here for details.
Please note that the Nintendo Switch version and the mobile device version feature different paid content.
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3. Use the gear button at the top right of the screen, and then choose Transfer Save Files.
4. Choose Enter Transfer Mode.
5. Read the warning carefully before choosing Transfer.
6. A Transfer ID and a Transfer Code will be generated.
7. On the device you will be transferring to, start Pokémon Friends, then use the Settings button. Choose Transfer Save Files, then choose Import Save Files and input the Transfer ID and Transfer Code from Step 5.
8. Players who purchased DLC can restore their content by using the Shop button on the top left of the Pokémon Friends home screen.
After transferring your save data to a new device, that data will no longer work on your old device.
Please make sure you have a stable internet connection before attempting to transfer your data.
3. Open the Shop screen at the top-left of the home screen.
4. Select the ! button at the bottom-left to restore your purchases.
If the steps listed above do not resolve the issue, please contact support through the Frequently Asked Questions and Contact Information (for players outside Asia) / (for players residing in Asia) and attach a screenshot with the error code displayed.