Ανεξάρτητα από το αν αλλάζω εταιρεία, η φορητότητα αριθμού ισχύει.

Ανεξάρτητα από means regardless of or independently of.

In this sentence, it introduces a condition that does not affect the main statement:

• Ανεξάρτητα από το αν αλλάζω εταιρεία = Regardless of whether I change company
• η φορητότητα αριθμού ισχύει = number portability applies / is valid

So ανεξάρτητα από is functioning like a fixed expression meaning no matter whether...

This is a very common learner question.

Greek often uses από το αν... after expressions like ανεξάρτητα από. Here, το turns the whole αν-clause into something like a noun phrase.

So:

• αν = if / whether
• το αν = roughly the question of whether...

That means:

• Ανεξάρτητα από το αν αλλάζω εταιρεία
  literally: Regardless of whether I change company

In natural English, we usually do not translate το separately, but in Greek it helps structure the clause.

Greek often uses the present tense in cases where English may also say I change or I am changing, but here it has a more general meaning: if I change / if I happen to change.

So:

• αλλάζω εταιρεία = I change company / I switch company

This present tense can describe a general or possible situation, not only something happening right now.

Depending on context, Greek could also use a different form, such as αν αλλάξω, but το αν αλλάζω εταιρεία sounds like whether I change company as a general possibility.

Yes, in some contexts Greek speakers might say something with αν αλλάξω εταιρεία, but it is slightly different in structure and feel.

• αν αλλάξω εταιρεία = if I change company
  This is more directly about a specific future possibility.
• το αν αλλάζω εταιρεία = whether I change company
  This is more neutral and fits well after ανεξάρτητα από.

Because the sentence is saying that the rule applies regardless of whether that happens, το αν αλλάζω εταιρεία is very natural.

Because αλλάζω εταιρεία here means change company / switch provider, where εταιρεία is used in a general, indefinite sense.

Compare:

• αλλάζω εταιρεία = I change company / switch to another company
• αλλάζω την εταιρεία = I change the company
  This sounds like a specific company already known in the conversation.

So the lack of article makes it more general.

Literally, εταιρεία means company.

In this context, it most likely refers to a telecom provider / mobile company / carrier.

So although the Greek says company, the real meaning in context is something like:

• change provider
• switch mobile company
• move to another carrier

This is common in Greek: the broader word εταιρεία is often enough when the context is clear.

Because Greek often uses a bare genitive for this kind of category or technical term.

• η φορητότητα αριθμού = number portability
• literally: portability of number

This is similar to how English often stacks nouns: number portability, data transfer, account number, etc.

If you said η φορητότητα του αριθμού, that would sound more like the portability of the number, referring to one specific number already identified. The version without the article is more general and label-like, which fits a policy or service term.

Αριθμού is in the genitive singular.

The base form is:

• ο αριθμός = the number

Its genitive singular is:

• του αριθμού = of the number

In the phrase φορητότητα αριθμού, the genitive shows the relationship portability of number.

So:

• η φορητότητα = nominative singular feminine
• αριθμού = genitive singular masculine

This is a very common Greek pattern for forming compound-like expressions.

Ισχύει means is valid, applies, or is in effect.

The verb is ισχύω, which often means:

• to be valid
• to apply
• to hold true
• to be in force

In this sentence, the most natural translation is:

• number portability applies
• number portability remains valid

So it is not about physical strength here, even though in other contexts ισχύς is related to power or force.

Greek word order is flexible. The sentence begins with the condition-setting phrase:

• Ανεξάρτητα από το αν αλλάζω εταιρεία,

and then gives the main statement:

• η φορητότητα αριθμού ισχύει.

This order is very natural because Greek often puts background information first. It is similar to English:

• Regardless of whether I change company, number portability applies.

You could rearrange things in Greek, but this version sounds clear and natural.

The comma separates the introductory phrase from the main clause.

So the structure is:

• introductory phrase: Ανεξάρτητα από το αν αλλάζω εταιρεία
• main clause: η φορητότητα αριθμού ισχύει

This is very similar to English punctuation in sentences like:

• Regardless of whether I change company, number portability applies.

A rough pronunciation guide is:

Aneksártita apó to an allázo etería, i foritótita arithmoú ischýi.

A few useful notes:

• Ανεξάρτητα → stress on -ξάρ-
• από → stress on the second syllable
• αλλάζω → stress on λά
• εταιρεία → stress on εί
• φορητότητα → stress on τό
• αριθμού → stress on the last syllable
• ισχύει → roughly ee-SHEE-ee

The written accents in Greek are very important because they show where the stress goes.

Yes, it is basically a standard technical or regulatory term.

• φορητότητα = portability
• φορητότητα αριθμού = number portability

This is the normal phrase used for keeping your phone number when changing providers. So even if the individual words are understandable, together they form a recognized term rather than just a random combination.

The sentence has two main parts:

1. Ανεξάρτητα από το αν αλλάζω εταιρεία
   = an introductory prepositional phrase with an embedded clause
   = Regardless of whether I change company

2. η φορητότητα αριθμού ισχύει
   = the main clause
   = number portability applies

More specifically:

• Ανεξάρτητα = adverb used in a fixed expression
• από = preposition
• το αν αλλάζω εταιρεία = clause functioning like the object of από
• η φορητότητα αριθμού = subject
• ισχύει = verb

So the whole sentence is built as:

Regardless of X, Y applies.