Select an empty slot (Slot 2 is often best to avoid overwriting your own progress) and choose Bios Management (Optional)
If you want to skip the grind and unlock all 35+ characters immediately, you can import a pre-made save file. save data tekken 5 aether sx2 better
Once you have the perfect save data, losing your phone would be tragic. Here is how to create a disaster-proof setup: Select an empty slot (Slot 2 is often