jeoneun hyudaeponeuro chinguege mesijireul bonaeyo.

저는 is made of 저 + 는.

• 저 = I/me in a polite, humble style
• 는 = topic particle

So 저는 means something like as for me.

Why not the others?

• 나는: also means I, but 나 is less formal than 저
• 제가: 저
  • subject particle 가. This puts more focus on I as the subject

In a neutral polite sentence like this, 저는 sounds very natural.

는 marks the topic of the sentence.

In this sentence, 저는 sets up me as what the sentence is about:

• As for me, I send a message...

English usually does not mark topic separately, so this can feel new to learners.

Very roughly:

• 저는 = as for me
• 제가 = I (with more subject focus, often when identifying who did something)

The particle -(으)로 often means by, with, or using when it shows the means or tool.

So:

• 휴대폰 = cellphone / mobile phone
• 휴대폰으로 = by cellphone, with a cellphone, using a cellphone

Here it tells you the method used to send the message.

Also, the form is 으로 because 휴대폰 ends in a consonant.

에게 marks the recipient of an action, especially with verbs like give, send, or tell.

So:

• 친구에게 = to a friend

In this sentence:

• 메시지를 보내요 = send a message
• 친구에게 = to a friend

A very common alternative is 친구한테, which is slightly more conversational. Both are natural here.

를 is the object particle. It marks what is being acted on.

So:

• 메시지 = message
• 메시지를 = message as the direct object

In this sentence, the thing being sent is the message, so it gets 를.

Because 메시지 ends in a vowel, the object particle is 를 rather than 을.

The dictionary form is 보내다, which means to send.

보내요 is the polite present-style form.

Depending on context, Korean present-style forms can mean:

• send
• am sending
• sometimes even will send

So 보내요 does not map to only one English tense. Context decides the best translation.

Korean normally puts the verb at the end. Its basic word order is often described as Subject-Object-Verb.

So this sentence is literally closer to:

• I, by cellphone, to a friend, a message send

That sounds strange in English, but it is normal in Korean.

Also, Korean is more flexible than English about word order, as long as the particles make the roles clear. But the verb usually still stays at the end.

Yes. Korean often leaves out information that is obvious from context.

For example, people might say:

• 휴대폰으로 친구에게 메시지 보내요.
• 친구에게 메시지 보내요.
• 메시지 보내요.

The subject 저는 is often omitted if it is already understood.

Particles can also sometimes be dropped in casual speech, though keeping them is very helpful for learners and often clearer.

메시지 is natural and understandable. It means message.

But in everyday Korean, if you specifically mean a text message, people very often say:

• 문자(를) 보내요 = send a text

So:

• 메시지 can be broader
• 문자 is more specifically text message

Because the sentence includes 휴대폰으로, many learners may understand 메시지 here as a phone message or text-like message.

Yes.

The given sentence is polite and everyday:

• 저는 휴대폰으로 친구에게 메시지를 보내요.

Less formal:

• 나는 휴대폰으로 친구한테 메시지를 보내.

More formal:

• 저는 휴대폰으로 친구에게 메시지를 보냅니다.

The main differences are:

• 저 / 나 for formality level of I
• 에게 / 한테 for recipient marking style
• 보내요 / 보내 / 보냅니다 for speech level