انا اتصلت باختي امبارح.

Not strictly.

In Egyptian Arabic, you can often drop the subject pronoun because the verb already tells you who did the action. So:

اتصلت باختي امبارح
is a perfectly normal sentence.

However, انا is often added for:

• clarity
• emphasis
• contrast

It can also help because the written form اتصلت can match more than one subject in unvowelled Arabic writing. So انا makes it clearly I called.

اتصلت is the past tense form of the verb اتصل.

Here it means:

• I called
• I contacted
• often specifically I phoned

So in everyday Egyptian Arabic, اتصلت usually suggests making contact by phone, though it can sometimes be broader than that depending on context.

The -ت is the past-tense ending.

In this sentence, with انا, it gives the meaning I called.

A useful thing to know: in normal Arabic spelling without vowel marks, اتصلت can also look the same as you called. That is one reason speakers may include انا or another pronoun when needed.

Because the verb اتصل takes the preposition بـ when you say who you contacted.

So Egyptian Arabic says:

• اتصلت باختي = I called my sister

Literally, it is closer to:

• I contacted with / to my sister

English uses a direct object after call, but Arabic uses اتصل بـ.

This is very common and important to memorize as a chunk:

اتصل بـ + person

Both spellings point to the same phrase.

More careful spelling would often be:

بأختي

But in informal Egyptian writing, the hamza is very often simplified or omitted, so you commonly see:

باختي

This is normal in casual writing. The meaning does not change.

It breaks down like this:

• أخت / اخت = sister
• -ي = my

So:

اختي = my sister

This -ي ending is a very common possessive suffix in Arabic:

• صاحبي = my friend
• بيتي = my house
• أمي / امي = my mother

A rough pronunciation is:

ana ittaSalt bi-oxti embaareH

A few notes:

• اختي is roughly oxti or ukhti, depending on how carefully or naturally someone says it
• امبارح is roughly embaareH
• the final sound in امبارح is a strong, breathy ḥ sound, not the normal English h

You do not need perfect pronunciation right away, but it helps to hear that:

• اتصلت has stress around -Salt
• امبارح is a very common everyday Egyptian word for yesterday

It is Egyptian Arabic.

The clearest sign is امبارح, which is the everyday Egyptian word for yesterday.

In Modern Standard Arabic, you would more likely say something like:

اتصلتُ بأختي أمس

Differences:

• امبارح is colloquial Egyptian
• أمس is Standard Arabic
• Standard Arabic would also normally show case endings in careful writing or speech

Yes, you can move it.

In this sentence, putting امبارح at the end is very natural:

انا اتصلت باختي امبارح

But you could also say:

امبارح انا اتصلت باختي
or
امبارح اتصلت باختي

This changes the emphasis a little:

• sentence-final امبارح = neutral, very common
• sentence-initial امبارح = emphasizes yesterday

So the original word order is natural, but not the only possibility.

In Egyptian Arabic, a very common way is:

انا ما اتصلتش باختي امبارح

This uses the Egyptian negative pattern:

ما ... ش

So:

• اتصلت = I called
• ما اتصلتش = I didn’t call

This ما...ش pattern is extremely common in Egyptian Arabic.

Yes, and it is very common.

• اتصلت باختي امبارح = I called / contacted my sister, often by phone
• كلمت اختي امبارح = I spoke to my sister / talked to my sister / called my sister

The difference is mainly nuance:

• اتصلت بـ focuses more on the act of making contact, especially by phone
• كلمت focuses more on speaking with someone

In everyday conversation, both can work in many situations, but they are not always exactly identical.

Yes. In fact, that is very natural.

You can say:

اتصلت باختي امبارح

This is a normal, smooth Egyptian sentence.

Adding انا gives:

• extra clarity
• emphasis
• contrast, as in I called my sister yesterday, not my brother

So both are correct:

• اتصلت باختي امبارح
• انا اتصلت باختي امبارح

The version with انا is not wrong at all; it just feels a little more explicit.