“Abrir” vs “Ligar” in Portuguese: Turning On, Opening, and Starting Devices

Introduction

Many Portuguese learners get confused by the verbs Abrir and Ligar. Both can be translated as turning something on or opening it in English, but their uses are distinct. This article explains how Brazilians use these verbs with devices, doors, apps, and other objects, with clear rules, example sentences in Brazilian Portuguese, and cultural notes to help you speak naturally.

Basic meanings and direct translations

Abrir literally means to open. Use it for opening doors, windows, books, files, and apps, and sometimes for starting processes that are thought of as opening. Ligar literally means to connect or to switch on. Use it for turning on electronic devices, making phone calls, or starting machines that require power or a connection.

Simple semantic distinction

Abrir = open, make an opening; physical or metaphorical entry. Examples: abrir a porta, abrir o livro, abrir a conta.
Ligar = connect, switch on, call. Examples: ligar a televisão, ligar o rádio, ligar para alguém.

When to use Abrir

Use abrir when you are creating or revealing an opening or when something becomes accessible. It covers both physical and digital contexts where the idea is gaining access, not powering something.

Physical openings

Common physical actions use abrir:

abrir a porta
abrir a janela
abrir a caixa
abrir a garrafa

Example:
Por favor, abre a porta, está muito quente aqui.

Documents, books and files

When you access information by opening a page, file, or app, Brazilians usually say abrir:

abrir o livro
abrir o arquivo
abrir o aplicativo

Example:
Vou abrir o arquivo no meu computador para ver os detalhes.

Metaphorical openings and services

Abrir also appears in figurative expressions like abrir uma conta, abrir portas (to open doors/opportunities), abrir um negócio:

abrir uma conta
abrir um negócio
abrir portas

Example:
Ela vai abrir uma conta no banco hoje.

When to use Ligar

Use ligar when you mean to power on, switch on, connect electrically, or initiate a call. This verb emphasizes establishing a connection or turning the power supply on.

Turning on devices

For most electronic devices and appliances, Brazilians use ligar:

ligar a televisão
ligar o computador
ligar a luz
ligar o ar-condicionado

Example:
Você pode ligar a luz? Está escuro aqui.

Phone calls and connections

To call someone, use ligar, often with para:

ligar para o João
ligar para a loja

Example:
Eu vou ligar para o suporte técnico agora.

Connecting and activating services

Ligar can also mean to connect a service (internet, gas with electronic controls) or to switch something into an active state:

ligar a internet
ligar o modem
ligar o alarme

Example:
Alguém ligou o alarme sem querer durante a noite.

Overlap and tricky examples

Some situations allow both verbs depending on nuance or the speaker’s perspective. Knowing the subtle difference helps you sound natural.

Computers and smartphones

When you press the power button to make a device start from off, Brazilians typically say ligar o computador, celular ou smartphone. But when you open an application, file, or folder on that device, you say abrir.

Examples:
Preciso ligar o computador antes de abrir o documento.
Abre o aplicativo e me mostra a foto.

Doors vs. power switches

For doors and covers use abrir. For machines with switches, consider whether you mean opening the lid or switching the machine on. If you raise a lid, use abrir. If you activate the device, use ligar.

Examples:
Abre a tampa do micro-ondas para colocar o prato.
Liga o micro-ondas antes de ajustar o tempo.

Cars, bikes and engines

To start an engine you usually say ligar o carro or ligar a moto. To open the car door use abrir. If you open the trunk or hood, use abrir.

Examples:
Ela ligou o carro e saiu para trabalhar.
Abre o porta-malas, preciso pegar a bolsa.

Conjugation basics and useful forms

Here are the most common conjugations for both verbs in present, past, and imperative forms. Memorize these to use the verbs naturally in conversation.

Abrir (regular -ir verb)

Present: eu abro, tu abres, ele/ela abre, nós abrimos, vocês abrem, eles abrem.
Past simple (pretérito perfeito): eu abri, tu abriste, ele/ela abriu, nós abrimos, vocês abriram, eles abriram.
Imperative: abre (tu), abra (você), abram (vocês), abramos (nós).

Examples:
Nós abrimos as janelas todas as manhãs.
Abre o aplicativo e me diz se funcionou.

Ligar (regular -ar verb)

Present: eu ligo, tu ligas, ele/ela liga, nós ligamos, vocês ligam, eles ligam.
Past simple (pretérito perfeito): eu liguei, tu ligaste, ele/ela ligou, nós ligamos, vocês ligaram, eles ligaram.
Imperative: liga (tu), ligue (você), liguem (vocês), liguemos (nós).

Examples:
Eu ligo a televisão de manhã.
Liga o ar-condicionado, está muito quente.

Common collocations and expressions

Certain expressions pair naturally with each verb. Learning collocations will help you produce native-like phrases.

Typical collocations with Abrir

abrir a porta, abrir a janela, abrir o envelope, abrir uma conta, abrir o aplicativo, abrir a sessão, abrir as mãos.

Example:
O gerente vai abrir uma nova conta para o cliente amanhã.

Typical collocations with Ligar

ligar a luz, ligar o rádio, ligar o computador, ligar para alguém, ligar o motor, ligar o aquecedor.

Example:
Ligue para a recepção e confirme a reserva.

Negative forms and polite requests

Negatives and polite imperatives are useful in daily interactions. Use não + verb for negatives and the imperative or conditional for polite requests.

Negatives

Não abra a porta agora.
Não ligue o equipamento sem autorização.

Polite requests

To be polite, Brazilians often use poderia + infinitive or pode + infinitive:

Você pode abrir a janela, por favor?
Poderia ligar a televisão? Está na hora do jogo.

Regional and casual variations

Brazil is large and spoken Portuguese varies. However, the abrir vs ligar distinction is consistent across regions. Informal speech may drop pronouns and use contractions or reduced forms, but the verbs remain the same.

Casual speech examples

Abre a porta, vai. (open the door, go on)
Liga a TV aí. (turn on the TV there)

Note that in very casual contexts you might hear ligar used metaphorically, like ligar com alguém meaning to connect with someone, or ligar as luzes used in the sense of making someone more attentive, but these are extensions of connecting or activating.

Usage notes and false friends

Many English speakers assume abrir always translates to open and ligar always to call, which is partly true, but pay attention to context. Ligar is not used for opening containers or doors; abrir is not used to power on most electronic devices. Mistakes sound odd to native speakers but are easily corrected by choosing the verb that matches opening vs connecting/powering.

False friend example:
Do not say abre a televisão to mean turn on the TV. Use liga a televisão.

Additional verbs to watch

Other verbs appear in related contexts: acender for turning on lights in some regions (acender a vela, acender a luz), iniciar or começar for starting processes (iniciar o programa, começar a reunião), and apertar for pressing buttons (aperte o botão). These verbs can coexist with abrir and ligar depending on nuance.

Examples:
Aperte o botão para ligar a máquina.
Vamos iniciar a reunião assim que todos chegarem.

Summary checklist: which verb to use

When deciding between abrir and ligar, ask yourself two quick questions:

1. Am I creating access or revealing something? If yes, use abrir.
2. Am I powering, connecting, or calling? If yes, use ligar.

Quick examples:
Open the door = abre a porta.
Turn on the doorbell (activate) = liga a campainha.
Open the app = abre o aplicativo.
Turn on the computer = liga o computador.

Conclusion

Understanding the difference between Abrir and Ligar will make your Portuguese sound more natural and accurate. Remember: abrir focuses on opening and gaining access, while ligar focuses on powering on, connecting, or calling. Pay attention to context, practice key collocations, and listen to native speakers to internalize these uses.