Provjerite dodatni paket u slučaju da potrošnja podataka raste.

Provjerite is the imperative form of provjeriti, meaning to check or to verify.

In this sentence, it is the 2nd person plural imperative:

• provjeri! = check! (said to one person, informal)
• provjerite! = check! (said to several people, or to one person politely)

So this form can mean either:

• a command to more than one person, or
• a polite instruction to one person

This is very common in notices, instructions, and customer-service language.

Here dodatni paket is the direct object of provjerite, so it is in the accusative case.

The noun paket is:

• masculine
• inanimate

For masculine inanimate nouns, the accusative singular looks the same as the nominative singular.

So:

• nominative: dodatni paket
• accusative: dodatni paket

That is why the form does not visibly change.

Compare:

• Vidim dodatni paket. = I see an extra package/add-on.
• Ovo je dodatni paket. = This is an extra package/add-on.

Same form, different case function.

U slučaju da means in case or if it happens that.

It is a very common expression used to introduce a condition or possible situation.

Breakdown:

• u = in
• slučaju = case (locative singular of slučaj)
• da = that / if

Literally, it is something like in the case that...

So:

• u slučaju da potrošnja podataka raste = in case data usage increases

This is a slightly more formal or structured way to express a condition than simply using ako.

Potrošnja podataka means data consumption / data usage.

Here:

• potrošnja = consumption, usage
• podataka = of data

So podataka is in the genitive plural.

This is very common in Croatian: one noun is followed by another noun in the genitive to show a relationship similar to English of.

Examples:

• potrošnja vode = consumption of water / water usage
• cijena goriva = price of fuel
• količina vremena = amount of time

So potrošnja podataka is literally consumption of data, which English usually renders as data usage.

Raste is the 3rd person singular present tense of rasti, meaning to grow, to rise, or to increase.

So:

• potrošnja podataka raste = data usage is increasing / data usage increases

It is in the present tense because Croatian often uses the present tense after conditional expressions like this when talking about something that may happen.

Here potrošnja is a singular noun, so the verb is also singular:

• potrošnja raste = usage increases

Yes, it could. For example:

• Provjerite dodatni paket ako potrošnja podataka raste.

This would also be understandable and natural.

The difference is mainly one of tone and style:

• ako = simpler, more direct, everyday if
• u slučaju da = more formal or instruction-like, often used in written notices, policies, or customer messages

So the original sentence sounds a bit more like a service recommendation or official instruction.

In everyday Croatian, paket can mean a literal package/parcels, but in service or telecom contexts it often means a plan, bundle, or add-on package.

So dodatni paket here likely means something like:

• an extra data package
• an add-on plan
• an additional service bundle

This is common in mobile phone and internet provider language.

Croatian does not have articles like English a/an/the.

So dodatni paket can mean:

• an additional package
• the additional package
• a supplementary plan

The exact meaning depends on context.

English requires an article, but Croatian usually leaves that information to context, word order, or the situation.

Croatian word order is more flexible than English word order because cases show grammatical relationships.

The original sentence:

• Provjerite dodatni paket u slučaju da potrošnja podataka raste.

is natural and clear.

Some parts could be moved for emphasis, for example:

• U slučaju da potrošnja podataka raste, provjerite dodatni paket.

This version puts the condition first and sounds very natural too.

So the word order is not completely fixed, but the original version is a standard, neutral way to say it.