Phone slots are mobile-friendly casino games that use a random number generator...

https://wiki-dale.win/index.php/What_Does_Variance_Mean_on_a_Slot_Game%3F

Phone slots are mobile-friendly casino games that use a random number generator (RNG) to ensure fair, unpredictable outcomes. Before playing, check the game's RTP (return to player) and volatility to understand your win frequency and size