Tablilla is a classic Puerto Rican slang word for a car's "license plate." The more standard Spanish words are placa or matrícula, so learning tablilla gives you a cool piece of regional vocabulary.
In the song, Bad Bunny boasts that his car is so recognizable that people don't even need to read the plate to know it's him: "To' saben que soy yo sin leer la tablilla" (Everyone knows it's me without reading the license plate). It's a powerful flex that highlights his status and Puerto Rican roots.
"TELEFONO NUEVO" feels like Bad Bunny and Luar La L letting you scroll through a chaotic, uncensored contact list: God, haters, women, labels, the streets, and a phone number that keeps changing. It starts surprisingly heavy: Bad Bunny says, "Me veo feliz, pero sólo en fotos viejas" [I look happy, but only in old photos] and "La fama, la detesto" [I hate fame]. He feels trapped even while winning, like "mi cuerpo está libre y mi corazón tras las rejas" [my body is free and my heart is behind bars]. So his solution is simple: silence the world. "No contesto llamadas ni mensajes de texto" [I don’t answer calls or text messages], and he jokes about getting a new number, almost like fame forced him to hit reset on his whole life.
Then the song flips into pure reggaeton flex and filth. Luar and Bad Bunny brag about money, sex, fashion, and status with zero filter. You get wild lines about paying women’s bills if the sex is good, changing number after hooking up so they cannot reach him, and comparing their success to stars like Messi and Mbappé. There is a lot of explicit sex talk, jokes, and over-the-top boasting, but it all fits the idea of the "new phone". Today you are in the contacts getting flown on a private jet, tomorrow he "cambio de número y no me consiguen" [changes number and they cannot find me]. The song feels like the chaos of being famous, wanted, overwhelmed, and still choosing to stay unreachable, hiding behind a new number while the party never really stops.