If you've switched to a new mobile phone, you can transfer your chat history from the old device to the new one by following these steps:
1. Log in to WeChat on your old mobile phone.
2. Tap 「Me」>「Settings」>「General」>「Chat History Migration & Backup」>「Migration 」> Migrate to another mobile phone or tablet> Select the chats you want to migrate.
3. Follow the instructions to complete the migration on your new device.
4. Make sure both devices are connected to the same network for a smooth transfer.
5. The pathway to access the migration feature may vary depending on the device.