Spanish · Pronunciation Guide
el teh-LEH-foh-noh — the accent holds the stress on the second syllable of four.
Four syllables, te-LÉ-fo-no, and the accent is mandatory. The word ends in a vowel, so the default would give te-le-FO-no. The mark pulls the beat back to the third-from-last syllable, which Spanish always writes out. The plural "teléfonos" keeps it for the same reason.
Listen: el teléfono
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Mi teléfono no tiene batería.
My phone has no battery.
Listen: Mi teléfono no tiene batería.
Free browser voice. Hear it read by a real native speaker inside the LingoDrop app.
"Mi teléfono no tiene batería" ends on a word whose accent breaks the i from the a, giving five beats: ba-te-RÍ-a. Two accents in one sentence doing different jobs — one pulling stress back, one splitting a diphthong. "Tiene" packs its ie into a single beat.
The English "telephone" front-stresses the word and reduces everything else, giving "TEL-uh-fone". Spanish has four full beats with the peak on LÉ. The two o vowels then want differentiating, when they should be twins. And ignoring the accent produces "te-le-FO-no", which is exactly what the mark forbids.