The hidden features of the Vivo phone can be found in the Tools folder on the desktop of the phone in the "Tips and Tricks" program, enter the Tips and Tricks program you can see some of the hidden features of the Vivo phone.
This model can hide icons by clicking on the left menu key - Hide Icons - and clicking on the desktop icon.
Specific steps (to vivo Y13l for example):
1, standby desktop to find the tools folder
2, find the "tips" program
3, you can learn about vivo cell phone hidden features