El número de teléfono está en la tarjeta SIM.

The phone number is on the SIM card.

Breakdown of El número de teléfono está en la tarjeta SIM.

• en: in
• estar: to be
• la tarjeta SIM: the SIM card
• el número de teléfono: the phone number

Questions & Answers about El número de teléfono está en la tarjeta SIM.

Why is it el número de teléfono and not just número de teléfono?

In a normal full sentence, Spanish usually needs an article here, so el número de teléfono is the natural way to say the phone number.

Spanish uses definite articles (el, la, los, las) more often than English does. Without el, the sentence would sound incomplete in most contexts, unless it were a note, label, or headline.

Why does Spanish say número de teléfono instead of something like teléfono número?

Spanish commonly uses noun + de + noun to show relationships like number of phone / phone number.

So:

• número de teléfono = phone number
• literally, number of telephone

This is a very common pattern in Spanish:

• tarjeta de crédito = credit card
• mesa de madera = wooden table
• zapatos de deporte = sports shoes

Why is it está and not es?