Förutsatt att mobildatan fungerar är mobilabonnemanget prisvärt.

Förutsatt att means provided that, assuming that, or on condition that.

It is similar to om = if, but förutsatt att often sounds a bit more formal and a bit more conditional.

• Om mobildatan fungerar ... = If the mobile data works ...
• Förutsatt att mobildatan fungerar ... = Provided that / assuming that the mobile data works ...

So yes, they are close, but förutsatt att feels more like a stated condition.

This is because Swedish follows the V2 rule in main clauses: the finite verb must come in the second position.

Here, the whole opening clause Förutsatt att mobildatan fungerar is placed first. After that, the main clause begins, and the verb är must come next:

• Förutsatt att mobildatan fungerar | är | mobilabonnemanget prisvärt

If you started directly with the subject, you would get:

• Mobilabonnemanget är prisvärt, förutsatt att mobildatan fungerar.

Both are correct, but the word order changes because of what comes first.

Yes. It is a subordinate clause introduced by förutsatt att.

A useful thing to notice is that when a subordinate clause comes first in Swedish, the following main clause still keeps normal Swedish V2 order, which is why you get:

• ... är mobilabonnemanget prisvärt

Also, subordinate clauses are where sentence adverbs like inte usually go before the verb:

• Förutsatt att mobildatan inte fungerar ...

That is a typical subordinate-clause pattern in Swedish.

In Swedish, definiteness is usually marked by an ending on the noun, rather than by a separate word like the.

So:

• mobildata = mobile data
• mobildatan = the mobile data

and:

• mobilabonnemang = mobile subscription / mobile plan
• mobilabonnemanget = the mobile subscription / the mobile plan

The endings differ because Swedish nouns belong to different grammatical genders:

• en-word: often takes -en or -n in the definite singular
• ett-word: often takes -et or -t in the definite singular

Here:

• mobildata is an en-word → mobildatan
• mobilabonnemang is an ett-word → mobilabonnemanget

Because prisvärt is agreeing with mobilabonnemanget, which is an ett-word.

The base form of the adjective is prisvärd. Its forms are:

• en noun: prisvärd
• ett noun: prisvärt
• plural / definite plural: prisvärda

So:

• en prisvärd bil
• ett prisvärt abonnemang
• prisvärda abonnemang

That is why the sentence uses prisvärt, not prisvärd.

Not exactly.

Prisvärd / prisvärt means something like:

• good value
• worth the price
• good for the money

It does not simply mean cheap.

Compare:

• billig / billigt = cheap, low in price
• prisvärd / prisvärt = worth what it costs

So something can be expensive but still prisvärt if the quality or service is good enough.

Yes, fungerar literally means functions, but in normal English we would often translate it as:

• works
• is working
• functions

For technology and services, Swedish often uses fungera in exactly this way:

• Internetet fungerar inte. = The internet isn’t working.
• Appen fungerar bra. = The app works well.

So here mobildatan fungerar means the mobile data is working properly.

Because Swedish forms compound nouns very freely, and they are usually written as one word.

So:

• mobil
  • data → mobildata
• mobil
  • abonnemang → mobilabonnemang

This is very common in Swedish. Where English often uses two words, Swedish often prefers one compound word.

A learner should get used to this, because it happens all the time.

Yes, absolutely.

That version is natural and correct. The main difference is tone:

• Om ... = neutral, everyday if
• Förutsatt att ... = more formal or more explicitly conditional

So both work, but förutsatt att sounds a bit more like provided that.

In Swedish, a comma before the main clause is often not used when a subordinate clause comes first, especially in ordinary modern writing.

So this is normal:

• Förutsatt att mobildatan fungerar är mobilabonnemanget prisvärt.

A comma may sometimes appear for clarity or style, but in a sentence like this, leaving it out is standard and natural.

So unlike English, Swedish is generally less eager to put a comma after an introductory subordinate clause.