شاشة التليفون فيها مشكلة، بس البطارية لسه كويسة.

A word-by-word breakdown looks like this:

• شاشة = screen
• التليفون = the phone
• شاشة التليفون = the phone’s screen / the screen of the phone
• فيها = in it / it has
• مشكلة = a problem
• بس = but
• البطارية = the battery
• لسه = still
• كويسة = good

So the whole sentence is basically:

• شاشة التليفون فيها مشكلة = The phone screen has a problem
• بس البطارية لسه كويسة = but the battery is still good

In natural English: The phone screen has a problem, but the battery is still good.

This is the Arabic idafa structure, often called the possessive construction.

In Arabic, instead of saying screen of the phone, you usually just place the two nouns next to each other:

• شاشة التليفون = screen the-phone = the phone’s screen

This is very common in both Egyptian Arabic and Standard Arabic.

A few similar examples:

• باب البيت = the door of the house / the house door
• لون العربية = the color of the car
• رقم التليفون = the phone number

So شاشة التليفون is the normal way to say the phone screen.

This is one of the most useful Egyptian Arabic patterns.

• في can mean there is / there are
• ها = her/it, attached pronoun

So:

• فيها مشكلة literally = in it there is a problem
• natural English = it has a problem / there is a problem with it

Egyptian Arabic often uses this structure instead of a verb like to have.

Compare:

• العربية فيها مشكلة = The car has a problem
• الكمبيوتر فيه فيروس = The computer has a virus
• فيه ناس برا = There are people outside

So in your sentence, شاشة التليفون فيها مشكلة means there is a problem in/with the phone screen, which English naturally expresses as the phone screen has a problem.

Because شاشة is a feminine noun in Arabic.

The attached pronoun has to match the noun:

• فيه = in it / it has, for a masculine noun
• فيها = in it / it has, for a feminine noun

Since شاشة is feminine, you say:

• الشاشة فيها مشكلة

More examples:

• التليفون فيه مشكلة = The phone has a problem
  because تليفون is masculine
• البطارية فيها مشكلة = The battery has a problem
  because بطارية is feminine

Because it describes البطارية, and بطارية is feminine.

In Egyptian Arabic, adjectives usually agree with the noun in gender:

• masculine: كويس = good
• feminine: كويسة = good

So:

• التليفون كويس = The phone is good
• البطارية كويسة = The battery is good

That is why the sentence says:

• البطارية لسه كويسة

not

• البطارية لسه كويس

Here لسه means still.

So:

• البطارية لسه كويسة = The battery is still good

This is a very common Egyptian Arabic word, and it can have a few related meanings depending on context, such as:

• still
• not yet
• sometimes just

Examples:

• لسه صاحي = He’s still awake
• لسه ماجاش = He hasn’t come yet
• لسه واصل = He just arrived

In your sentence, the meaning is clearly still.

In this sentence, بس means but:

• ... فيها مشكلة، بس البطارية لسه كويسة = ... has a problem, but the battery is still good

But بس can also mean only / just, depending on context.

Examples:

• عايز مية بس = I only want water
• هو تعبان، بس هي كويسة = He’s tired, but she’s fine

So بس is a very common word with two main meanings:

• but
• only / just

You understand it from context.

It is Egyptian Arabic.

A few clues:

• التليفون is a very common colloquial word for telephone/phone
• بس for but is very common in speech
• لسه is especially common in Egyptian Arabic
• كويسة is colloquial Egyptian pronunciation and form

A more Standard Arabic version might look different, for example:

• شاشة الهاتف فيها مشكلة، لكن البطارية لا تزال جيدة

That sounds more formal and less conversational.

So the original sentence is the kind of Arabic you would hear in everyday Egyptian speech.

A common pronunciation would be something like:

shāshet et-tilifōn fīhā moshkila, bas il-baṭṭāriyya lissa kwayyisa

A few notes:

• شاشة sounds like shāsha, but because it is in an idafa before التليفون, people often say shāshet et-tilifōn
• التليفون is commonly pronounced et-tilifōn or it-tilifōn
• مشكلة is usually moshkila
• لسه is lissa
• كويسة is kwayyisa

Pronunciation varies a bit from speaker to speaker, but this is a good practical version to learn.

Because in Arabic, the verb to be is usually not stated in the present tense.

So:

• البطارية كويسة literally = the battery good
• natural English = the battery is good

And:

• البطارية لسه كويسة literally = the battery still good
• natural English = the battery is still good

This is completely normal in Arabic.

Compare:

• أنا تعبان = I am tired
• هو مشغول = He is busy
• العربية سريعة = The car is fast

No present-tense is/am/are is needed.

Because the meaning is a problem, not the problem.

• فيها مشكلة = it has a problem / there is a problem with it
• فيها المشكلة would sound unnatural in most contexts unless you mean a specific previously known problem

Arabic often leaves nouns indefinite when English would use a/an.

So:

• فيها مشكلة = there is a problem
• فيها المشكلة = there is the problem

In this sentence, the indefinite form مشكلة is the natural choice.

Yes. That is also natural.

• في مشكلة في شاشة التليفون = There is a problem in/with the phone screen
• شاشة التليفون فيها مشكلة = The phone screen has a problem

Both are common and understandable.

The difference is mostly about focus:

• شاشة التليفون فيها مشكلة starts with the screen itself
• في مشكلة في شاشة التليفون starts with the existence of a problem

English does this too:

• The phone screen has a problem
• There’s a problem with the phone screen

Yes, definitely.

In Egyptian Arabic, كويس / كويسة can cover a range of meanings, such as:

• good
• fine
• okay
• all right

So البطارية لسه كويسة could mean:

• The battery is still good
• The battery is still okay
• The battery is still fine

The exact English wording depends on context. If someone is talking about whether the battery still works well, still fine or still okay can sound very natural.

Yes, تليفون is very common in Egyptian Arabic, especially in everyday speech.

You may also hear:

• موبايل = mobile phone / cell phone
• فون in some casual speech, depending on context and speaker

So if you are talking specifically about a smartphone, many Egyptians might naturally say:

• شاشة الموبايل فيها مشكلة، بس البطارية لسه كويسة

But التليفون is still very common and completely normal.

This sentence is useful because it contains several very common Egyptian Arabic patterns:

1. Idafa for possession

   • شاشة التليفون = the phone screen

2. فيه / فيها for has / there is

   • فيها مشكلة = it has a problem

3. No present-tense verb to be

   • البطارية لسه كويسة = the battery is still good

4. Adjective agreement

   • كويسة matches feminine بطارية

5. Common connector

   • بس = but

6. Common time/state word

   • لسه = still

If you learn these patterns well, you will be able to understand and make many everyday Egyptian Arabic sentences.