Zhu Zi Rotom's mobile phone case is used.

First, the player opens the map, finds the table city-South, and then arrives here by flying;

2. After arriving at the south gate of Taitai City, go to the gate and enter;

3. Then go straight along the road and go up the steps to the second floor;

4. There will be an old divination lady next to the second flowerpot on the steps, and the player should click to talk to her;

5. Then, you can select files from different regions here, click Save after selection, and you can get the mobile phone case in the corresponding region;

6. After obtaining the mobile phone case, the player can change the keys, among which: the left key of the cross key is changed, the upper key is action, the lower key is photo, and the right key is notification.