chaeksang oreunjjoge hyudaeponi isseoyo.

It literally means at the desk’s right side or on the right side of the desk.

Breakdown:

• 책상 = desk
• 오른쪽 = right side
• 에 = at / in / on / to, depending on context

In natural English, 책상 오른쪽에 휴대폰이 있어요 is usually understood as There is a cellphone to the right of the desk or The cellphone is on the right side of the desk.

In Korean, location expressions like this often omit 의.

So both of these are possible:

• 책상 오른쪽에
• 책상의 오른쪽에

They both mean roughly on the right side of the desk, but the version without 의 is very common and natural in everyday speech.

This kind of omission often happens with place-related expressions:

• 학교 앞 = in front of the school
• 집 뒤 = behind the house
• 의자 아래 = under the chair

So 책상 오른쪽에 is completely normal.

Here, 에 marks the location where something exists.

Since the sentence uses 있어요 (there is / exists), the place where the object is located is marked with 에.

So:

• 책상 오른쪽에 = at / on the right side of the desk
• 휴대폰이 있어요 = there is a cellphone

A very common pattern is:

[place]에 [thing]이/가 있어요
= There is [thing] at/in/on [place]

이 is the subject marker. It is used after nouns that end in a consonant, and 휴대폰 ends in ㄴ, so it takes 이.

• 휴대폰이
• not 휴대폰가

In existence sentences with 있다, the thing that exists is often marked with 이/가:

• 책상 위에 책이 있어요.
• 방 안에 사람이 있어요.

So in this sentence, 휴대폰이 means the cellphone as the thing that is present there.

Because 있어요 means exists / is located / there is, while 예요 means is in the sense of identity.

Compare:

• 휴대폰이에요 = It is a cellphone
• 휴대폰이 있어요 = There is a cellphone

In your sentence, the speaker is not identifying something. They are saying that a cellphone is located somewhere. So 있어요 is the correct verb.

No. 있어요 can also be used for people and animals when it means to be present / to exist somewhere.

Examples:

• 방에 사람이 있어요. = There is a person in the room.
• 공원에 강아지가 있어요. = There is a puppy in the park.

But for actions or states of people, Korean often uses other verbs. Here, though, 있어요 simply means that the cellphone exists in that location.

Korean word order is flexible, but the very common pattern for existence is:

[place]에 [thing]이/가 있어요

So:

• 책상 오른쪽에 휴대폰이 있어요

This is different from English, which often starts with There is...

A more word-for-word order would be:

• On the right side of the desk, a cellphone exists.

That sounds unnatural in English, but it is a normal Korean structure.

Yes. That sentence is also correct, but the nuance changes.

• 책상 오른쪽에 휴대폰이 있어요
  = There is a cellphone on the right side of the desk.
  This presents 휴대폰 as newly noticed or simply existing there.

• 휴대폰은 책상 오른쪽에 있어요
  = As for the cellphone, it is on the right side of the desk.
  This sounds like the cellphone is already the topic of conversation.

So:

• 이/가 often introduces or highlights what exists
• 은/는 often marks something already known or being contrasted

Here, 오른쪽 means the right side.

It does not mean correct or right in the abstract English sense. It refers to physical direction or position.

Examples:

• 오른쪽으로 가세요. = Go to the right.
• 오른쪽에 있어요. = It is on the right.

So in your sentence, it clearly refers to location.

Yes, and this is a point learners often notice.

책상 오른쪽에 can be understood broadly as:

• on the right side of the desk
• to the right of the desk

The exact English wording depends on context.

If you are describing a room layout, it often means to the right of the desk.
If you are describing the desk surface and where objects are placed, it could mean on the right side of the desk.

Korean often leaves that kind of spatial detail to context.

Yes. 휴대폰 literally refers to a mobile phone / cellphone.

In modern Korean, people also commonly say:

• 핸드폰
• 스마트폰 for smartphone

But 휴대폰 is standard and very common. In this sentence, it simply means cellphone or mobile phone.

Yes. 있어요 is in the polite informal style, often called 해요체.

It is appropriate in many everyday situations:

• speaking to someone you do not know well
• speaking politely to classmates, coworkers, or customers
• general conversation

Less polite:

• 책상 오른쪽에 휴대폰이 있어.

More formal:

• 책상 오른쪽에 휴대폰이 있습니다.

So 있어요 is a very useful and natural everyday form.

Yes. This sentence uses a very common pattern that works with many location nouns.

For example:

• 책상 왼쪽에 휴대폰이 있어요. = The cellphone is on the left side of the desk.
• 책상 위에 휴대폰이 있어요. = The cellphone is on the desk.
• 책상 아래에 휴대폰이 있어요. = The cellphone is under the desk.
• 책상 앞에 휴대폰이 있어요. = The cellphone is in front of the desk.
• 책상 뒤에 휴대폰이 있어요. = The cellphone is behind the desk.

So this sentence is a good model for making many other location sentences.