Ar trebui să economisești dacă vrei un telefon mai bun.

Ar trebui is a very common Romanian way to express should.

It comes from the verb a trebui = to be necessary / to have to, but in this form it is used in a more indirect, softer way to give advice or express what would be a good idea.

So in this sentence, ar trebui does not sound like a strict obligation. It sounds more like advice:

• Ar trebui... = You should...

In Romanian, many verbs and expressions are followed by să + verb.

Here, să economisești is the structure used after ar trebui.

So the pattern is:

• ar trebui să
  • verb

Examples:

• Ar trebui să pleci. = You should leave.
• Ar trebui să înveți. = You should study.

You can think of să as a very common connector that introduces a verb clause, somewhat like to or a subjunctive marker in English, though it does not match English exactly.

Economisești is the 2nd person singular form of a economisi (to save, usually money).

That form is used because the sentence is addressing you:

• (tu) economisești = you save

After ar trebui să, Romanian normally uses the present subjunctive form, and for many verbs that form looks the same as the regular present form.

So:

• (tu) economisești = you save
• să economisești = that you save / for you to save / save

In this sentence, it simply matches you.

It is omitted, because Romanian often leaves subject pronouns out when the verb ending already shows who the subject is.

Here:

• economisești already tells you the subject is tu (you, singular)
• vrei also tells you the subject is tu

So the full version could be:

• Tu ar trebui să economisești dacă vrei un telefon mai bun.

But normally Romanian would leave tu out unless you want emphasis or contrast.

Dacă means if.

It introduces a condition:

• dacă vrei... = if you want...

This is one of the most common Romanian words for making conditional sentences.

Examples:

• Dacă ai timp, vino. = If you have time, come.
• Dacă vrei, te ajut. = If you want, I’ll help you.

Just like with economisești, Romanian often drops the subject pronoun.

• vrei = you want
• (tu) vrei = you want

The ending -i tells you it is 2nd person singular.

So dacă vrei naturally means if you want.

In Romanian, adjectives usually come after the noun.

So:

• telefon bun = good phone
• telefon mai bun = better phone

This is the normal word order:

• noun + adjective

Putting the adjective before the noun is possible in some cases, but it is much less neutral and often stylistic or emphatic. For everyday Romanian, un telefon mai bun is the natural order.

Romanian usually forms the comparative with:

• mai
  • adjective

So:

• bun = good
• mai bun = better

Other examples:

• mare = big

• mai mare = bigger

• scump = expensive
• mai scump = more expensive

So un telefon mai bun literally follows the pattern a more good phone, but in natural English that is simply a better phone.

Yes, but the meaning would change slightly.

• Trebuie să economisești... = You must / you need to save...
• Ar trebui să economisești... = You should save...

So:

• trebuie să sounds stronger, more like necessity or obligation
• ar trebui să sounds softer, more like advice or recommendation

In this sentence, ar trebui să is a natural choice because it sounds like advice.

The given order is the most neutral and natural:

• Ar trebui să economisești dacă vrei un telefon mai bun.

Romanian word order is somewhat flexible, but not completely free. You can move parts around for emphasis, but the original version is the standard way to say it.

For example, you might also hear:

• Dacă vrei un telefon mai bun, ar trebui să economisești.

This puts the if clause first and is also perfectly natural. It just shifts the focus slightly.

Two important Romanian letters appear here:

• ă in ar trebui, dacă
• ș in economisești

A rough guide:

• ă is a short central vowel, similar to the a in English about or sofa
• ș sounds like English sh

So roughly:

• dacă ≈ DA-kuh
• economisești ≈ e-ko-no-mi-ZESH-tee

That is only approximate, but it helps.

Also note:

• ști at the end sounds like shty / shtee, depending on accent and how carefully it is pronounced.

Usually, yes. A economisi often means to save, especially in the sense of saving money or being economical.

In this sentence, because of un telefon mai bun, the meaning is naturally save up money.

If needed, Romanian can also make that even more explicit:

• să economisești bani = to save money

But here bani is not necessary because the context already makes it clear.

It is singular you.

You can tell from the verb forms:

• economisești
• vrei

These are both 2nd person singular forms, used with tu.

If you wanted plural or formal you, the verbs would be different:

• Ar trebui să economisiți dacă vreți un telefon mai bun.

So the original sentence is speaking to one person informally.