Send me a WhatsApp

Three people are chosen from the audience, and each one of them gives us three numbers at random, to form a combination of nine figures.
Four volunteers appear on stage. One of them is given a Tablet that he will sign from behind. The rest are given a notebook with different emojis, an emoji will be chosen in each of them.
Next, a WhatsApp is sent to the Tablet through a magic ritual-dance, and the magic occurs, the Tablet has received a WhatsApp! The volunteer who has the Tablet takes it out of the case, and shows the WhatsApp received, which will coincide with the emojis on the notebooks, in the same order. It is verified that it is the same Tablet that the volunteer previously signed.
When the public believes that the game is over, amid the ovation, you interrupt and remember that at the beginning they gave you a combination of nine numbers, which matches the mobile number that appears on the Tablet as the issuer.
Very visual and impressive effect