Semnalul depinde de acoperire.

Because Romanian usually puts the definite article at the end of the noun instead of using a separate word like the.

• semnal = signal
• semnalul = the signal

So Semnalul depinde de acoperire literally starts with The signal...

In Romanian, the verb a depinde normally goes with the preposition de, just like English uses on in depends on.

• depinde de acoperire = depends on coverage

So de is required here. Without it, the sentence would sound incomplete or incorrect.

Here, acoperire is being used in a general sense: coverage.

Romanian often leaves a noun indefinite when talking about something in general, especially after a preposition.

• de acoperire = on coverage
• de acoperirea rețelei = on the network’s coverage / on the coverage

So acoperire without the article is the natural choice if you mean coverage in general.

In everyday Romanian, acoperire can mean coverage, especially in mobile/network contexts.

So in this sentence it refers to things like:

• phone signal coverage
• network coverage
• reception area

It comes from the verb a acoperi, which basically means to cover, but the noun acoperire often has the specialized meaning coverage.

This is the normal, neutral Romanian word order:

• Semnalul = the subject
• depinde = the verb
• de acoperire = the complement

So it follows a straightforward pattern similar to English:

• The signal depends on coverage.

Romanian word order can be more flexible than English, but this version is the most natural and standard.

Depinde is the 3rd person singular form of the verb a depinde.

It matches semnalul, which is singular:

• semnalul depinde = the signal depends

Compare:

• semnalul depinde = the signal depends
• semnalele depind = the signals depend

So depinde is used because the subject is singular.

Yes, it is natural and correct.

A Romanian speaker might also say slightly more specific versions depending on context, for example:

• Semnalul depinde de acoperirea rețelei. = The signal depends on the network coverage.
• Puterea semnalului depinde de acoperire. = Signal strength depends on coverage.

But Semnalul depinde de acoperire is perfectly normal and understandable.

A simple English-friendly guide is:

sem-NA-lul de-PIN-de de a-co-pe-RI-re

A few helpful notes:

• e is usually like e in met
• i is like ee in see, though shorter
• r is usually tapped or rolled lightly
• stress is roughly:
  • semnalul
  • depinde
  • acoperire

You do not pronounce it like English signal or cover.

Usually acoperire is the best choice in this context.

Depending on the exact situation, Romanian might also use:

• semnal itself, if people are speaking loosely
• arie de acoperire = coverage area
• acoperirea rețelei = the network’s coverage

But for the general idea of phone/network coverage, acoperire is the standard word.

You would change both the noun and the verb:

• Semnalul depinde de acoperire. = The signal depends on coverage.
• Semnalele depind de acoperire. = The signals depend on coverage.

Changes:

• semnalul → semnalele
• depinde → depind

This is a common pattern in Romanian: the verb changes to agree with the subject.