Při práci v mobilním bankovnictví můžete zablokovat debetní kartu.

Literally, při práci means during work or while working. In this sentence, it does not mean your job or employment. It means something like while using or while working in the mobile banking system.

So Při práci v mobilním bankovnictví is a formal way to say:

• while using mobile banking
• when working in the mobile banking interface
• during work in the mobile banking app/system

In English, this sounds a bit more natural than the literal wording.

Because při requires the locative case.

The noun is:

• nominative: práce = work

After při, it changes to locative:

• locative: práci

So:

• při práci = during work / while working

This is a very common pattern:

• při studiu = during studies
• při jednání = during a meeting / negotiation
• při používání aplikace = while using the app

It is also in the locative case, because it follows the preposition v meaning in.

Base form:

• mobilní bankovnictví = mobile banking

After v:

• v mobilním bankovnictví = in mobile banking

Both words change as needed:

• mobilní → mobilním
• bankovnictví → bankovnictví
  (this noun happens to look the same in nominative and locative singular)

So the structure is:

• v + locative
• při + locative

Because adjectives must agree with the noun they describe in gender, number, and case.

Here the noun is:

• bankovnictví = a neuter singular noun

Since it is after v, it is in the locative singular. Therefore the adjective must also be locative singular neuter:

• nominative: mobilní bankovnictví
• locative: v mobilním bankovnictví

This ending -ím is normal for many soft adjectives in neuter singular locative.

Můžete means you can or you are able to.

It is the 2nd person plural form of moci = to be able to / can.

In Czech, this form can mean:

• you all can
• or polite/formal you can when speaking to one person

In instructions, websites, apps, and customer messages, Czech often uses this polite/plural form. So here it is basically:

• you can block the debit card

Zablokovat is a perfective verb, meaning a completed action: to block something successfully, as a one-time result.

• blokovat = to be blocking / to block in a general or ongoing sense
• zablokovat = to block completely, to carry out the action

In banking instructions, perfective verbs are very common because they focus on the completed result. The sentence is about the option to perform a specific action:

• můžete zablokovat debetní kartu = you can block the debit card

Because kartu is the accusative singular form, used for the direct object of the verb.

Base form:

• karta = card

Direct object form:

• kartu

So:

• zablokovat kartu = to block a card

This is normal for feminine nouns ending in -a:

• kniha → knihu
• stránka → stránku
• karta → kartu

It actually is agreeing with the noun, but some adjective forms look the same in different cases.

Here debetní describes kartu, which is:

• feminine
• singular
• accusative

For this type of adjective, the feminine singular accusative form is often the same as the nominative form:

• debetní karta
• debetní kartu

So the noun changes visibly:

• karta → kartu

But the adjective happens to stay:

• debetní → debetní

That is completely normal.

Usually it means mobile banking as a banking service/interface on a phone, often including the app. Depending on context, it can mean:

• the mobile banking app
• the mobile banking environment/interface
• the bank’s mobile banking service

So in practice, a user would probably understand this as something like:

• in the mobile banking app
• using mobile banking

If someone specifically wanted to say in the app, they might say something like v aplikaci. But v mobilním bankovnictví is perfectly natural in banking language.

Yes, it could be phrased differently. Czech word order is more flexible than English, because case endings show the grammatical roles.

This sentence is neutral and formal:

• Při práci v mobilním bankovnictví můžete zablokovat debetní kartu.

Other possible versions could be:

• V mobilním bankovnictví můžete zablokovat debetní kartu.
• Debetní kartu můžete v mobilním bankovnictví zablokovat.

These versions shift emphasis slightly, but the meaning stays close.

The original sounds like formal interface or help-text language.

It sounds a bit formal and instructional, which is very common in banking, software, and website text.

In everyday speech, a person might say something simpler, such as:

• V mobilní bance si můžete zablokovat kartu.
• V aplikaci si můžete zablokovat debetku.

These are more conversational.

So the original sentence is natural, but it belongs more to:

• official instructions
• app text
• banking help pages
• customer communication

In the given sentence, there is no si, and that is fine. But Czech often adds si in situations where the action is done for oneself or concerns one's own benefit/property.

So these are both possible:

• můžete zablokovat debetní kartu
• můžete si zablokovat debetní kartu

The version with si often sounds a bit more natural when talking about your own card:

• you can block your debit card

Without si, the sentence is still correct and common in formal instructions.

A rough English-friendly approximation would be:

przhee PRAH-tsee v MOH-bil-nyeem BAN-kov-nitst-vee MOO-zheh-teh ZAB-loh-koh-vaht DEH-bet-nyee KAR-too

A few helpful pronunciation notes:

• ř in při is difficult and has no exact English equivalent.
• č sounds like ch in church.
• ž sounds like the s in measure.
• ů sounds like a long oo.
• Stress in Czech is usually on the first syllable of each word.

So:

• PŘI práci
• MO-bilním
• BAN-kovnictví
• MŮ-žete
• ZA-blokovat
• DE-betní
• KAR-tu