A fatura detalhada mostra o consumo de dados.

Portuguese often uses the definite article where English might not. A fatura detalhada literally means the detailed bill/invoice.

In this sentence, a is the feminine singular definite article, because fatura is a feminine singular noun.

• a fatura = the bill / the invoice
• uma fatura = a bill / an invoice

So the sentence is talking about a specific bill, not just any bill.

Fatura often means bill, invoice, or statement, depending on context.

In Brazil, it is very commonly used for:

• credit card statements
• phone bills
• internet/mobile service bills
• utility billing statements

So in a sentence about data usage, fatura is likely something like a phone or internet bill/statement.

Because detalhada is an adjective that agrees with fatura, and fatura is feminine singular.

Agreement in Portuguese:

• masculine singular: detalhado
• feminine singular: detalhada
• masculine plural: detalhados
• feminine plural: detalhadas

So:

• o relatório detalhado
• a fatura detalhada

The adjective changes form to match the noun.

In Portuguese, adjectives often come after the noun. So fatura detalhada is the normal order for detailed bill.

This is very common:

• carro novo = new car
• conta bancária = bank account
• fatura detalhada = detailed bill

Sometimes adjectives can come before the noun, but that often changes the tone or emphasis. For basic learning, it is safest to think of noun + adjective as the standard pattern.

Mostra is the present tense, third-person singular form of the verb mostrar.

Conjugation:

• mostrar = to show
• mostro = I show
• mostra = he/she/it shows / you show (formal você)
• mostrando = showing

Since the subject is A fatura detalhada (The detailed bill), we need the form that matches it shows:

• A fatura detalhada mostra... = The detailed bill shows...

O is the masculine singular definite article the. It is used because consumo is a masculine noun.

• o consumo = the consumption / the usage
• um consumo = a consumption / a usage

So:

• o consumo de dados = the data usage

Portuguese often uses articles very naturally in places where English learners may be tempted to leave them out.

Literally, consumo de dados means consumption of data.

In natural English, that usually becomes:

• data usage
• data consumption

In telecom or mobile/internet contexts, consumo de dados is the standard way to talk about how much mobile data or internet data has been used.

Portuguese often uses noun + de + noun where English uses a noun modifier.

So:

• consumo de dados = consumption of data = data usage
• conta de luz = electricity bill
• cartão de crédito = credit card

This de structure is extremely common in Portuguese. English often puts one noun directly before another, but Portuguese usually connects them with de.

Here it means data in the telecom/internet sense, not general information.

Dados can mean:

• data / information
• mobile data / internet data
• in other contexts, even dice

In this sentence, because of fatura and consumo, the meaning is clearly data usage on a bill or statement.

Yes, sometimes, but consumo de dados is more common in billing or telecom contexts.

Possible options:

• consumo de dados = data consumption / data usage
• uso de dados = use of data / data usage

In everyday telecom language in Brazil, consumo de dados sounds very natural for tracking how much data was used.

In connected Brazilian speech, it may sound roughly like:

A fatura detalhada mostra o consumo de dados → a fa-TU-ra de-ta-LYA-da MOS-tra u con-SU-mo dji DA-dus

A few notes:

• detalhada has the lh sound, similar to the lli in million, though not exactly the same.
• de before some consonants may sound like dji or ji depending on accent, but here in careful speech it is usually just de.
• Final unstressed o often sounds like u in Brazil, so mostra o may sound like MOS-tra u.
• Final s in dados is usually a clear s sound in most Brazilian accents.

Yes, exibe is possible, but it sounds a bit more formal or technical.

Compare:

• A fatura detalhada mostra o consumo de dados. = The detailed bill shows the data usage.
• A fatura detalhada exibe o consumo de dados. = The detailed bill displays the data usage.

Mostra is the most neutral and common choice in everyday Portuguese.

Yes, it is completely normal and natural.

Structure:

• A fatura detalhada = subject
• mostra = verb
• o consumo de dados = direct object

So it follows the basic pattern:

Subject + Verb + Object

That makes it a very standard, useful sentence for learners.