O pacote de dados custa mais.

Pacote de dados usually means a data package or data plan, especially for mobile internet.

In real-life Brazilian Portuguese, people might also say:

• plano de dados = data plan
• pacote de internet = internet package
• franquia de dados = data allowance / data cap

So pacote de dados is a natural phrase, especially in telecom contexts.

Portuguese often uses noun + de + noun where English might use one noun to describe another.

So:

• pacote de dados = literally package of data
• cartão de crédito = credit card
• salada de frutas = fruit salad

This structure is extremely common in Portuguese.

O is the masculine singular definite article, meaning the.

It matches pacote, which is:

• masculine
• singular

So:

• o pacote
• um pacote

You use o when you mean the package / the plan in a specific or understood sense.

You usually learn the noun together with its article:

• o pacote

That tells you it is masculine.

There is no perfect rule, although many nouns ending in -e can be either masculine or feminine, so the article is important. In this case, it is simply o pacote.

Because the subject is singular:

• O pacote de dados = the data package

The main noun is pacote, not dados.

So the verb agrees with pacote, which is singular:

• O pacote custa mais.
• Os pacotes custam mais.

Even though dados is plural, it is inside the de phrase and does not control the verb.

Custa is the present indicative of custar for ele/ela/você.

Full present tense:

• eu custo
• você/ele/ela custa
• nós custamos
• vocês/eles/elas custam

Here it means something like costs or is costing, depending on context, but in this sentence the natural English translation is usually costs.

Here, mais means more.

So custa mais means costs more.

It often appears:

• by itself, when the comparison is understood
• or with do que / que, when the thing being compared is stated

Examples:

• O pacote de dados custa mais. = The data package costs more.
• O pacote de dados custa mais do que o outro. = The data package costs more than the other one.

No. If the comparison is already clear from context, mais can stand alone.

So this is completely fine:

• O pacote de dados custa mais.

If you want to say what it costs more than, then you add the comparison:

• O pacote de dados custa mais do que o básico.
• O pacote de dados custa mais que o básico.

In everyday Brazilian Portuguese, both do que and que are common in comparisons.

Yes. That is also very natural.

There is a small difference in structure:

• custa mais = costs more
• é mais caro = is more expensive

Both are common and correct.

A more natural choice depends on context, but both sound normal in Brazilian Portuguese.

Many native speakers do say it in casual speech, but many teachers and grammar guides consider it redundant.

That is because:

• mais already means more
• caro already means expensive

So the cleaner options are:

• custa mais
• é mais caro

For learners, it is safest to use one of those.

The normal, neutral order is:

• O pacote de dados custa mais.

That is the most natural version in most situations.

You might move things around in special contexts for emphasis, poetry, contrast, or certain spoken patterns, but for standard everyday Portuguese, keep the subject first:

• O pacote de dados custa mais.

Yes, dados is the plural of dado.

In technology, dados means data, just like English uses data as a mass/information term. Portuguese normally uses the plural form dados in this meaning.

So:

• dado = a piece of data / a datum, depending on context
• dados = data

That is why pacote de dados uses the plural.

A simple pronunciation guide:

• O → roughly oo or a short o, depending on accent
• pacote → pah-KOH-chee in many Brazilian accents
• de → jee or dee depending on region and speed, but often closer to dji before some sounds in connected speech
• dados → DAH-doos
• custa → KOOS-tah
• mais → sounds like mahis or mys, depending on accent

A rough overall approximation:

oo pah-KOH-chee djee DAH-doos KOOS-tah mahs

This is only an approximation for English speakers, but it can help.

Both are used, but they are not always exactly the same.

Often:

• plano de dados refers more to the overall service plan
• pacote de dados can refer to a specific package or bundle of data

In practice, the distinction is not always strict, and context matters. In telecom advertising and everyday speech, both can appear.

Normally, in a full sentence like this, you would keep it:

• O pacote de dados custa mais.

If you say just:

• Pacote de dados custa mais

it sounds incomplete or unnatural in most neutral contexts.

Portuguese usually uses articles more often than English does, especially with countable nouns in ordinary statements.

You would change both the article, the noun, and the verb:

• Os pacotes de dados custam mais.

Changes:

• o → os
• pacote → pacotes
• custa → custam

Dados stays plural, just as it already was.