क्या आप सिम कार्ड सक्रिय करेंगी?

Here क्या marks the sentence as a yes/no question.

So:

• आप सिम card सक्रिय करेंगी। = You will activate the SIM card.
• क्या आप सिम card सक्रिय करेंगी? = Will you activate the SIM card?

In Hindi, क्या is very commonly placed at the beginning to turn a statement into a yes/no question. In conversation, people can also sometimes rely on intonation alone, but sentence-initial क्या is very standard and clear.

आप is the polite/formal word for you.

Hindi has different levels of formality:

• तू = very intimate / very informal / sometimes rude in the wrong context
• तुम = informal but normal with friends, younger people, family, etc.
• आप = polite, respectful, formal

In a customer-service situation, shop interaction, or when speaking respectfully to someone, आप is the natural choice.

करेंगी shows that the speaker is addressing a female politely.

With आप, the future form still reflects the gender of the person being addressed:

• क्या आप सिम कार्ड सक्रिय करेंगे? = said to a male / masculine addressee
• क्या आप सिम कार्ड सक्रिय करेंगी? = said to a female addressee

So the feminine ending is not about the SIM card. It is about the person who will do the action.

करेंगी is the future tense form of करना (to do), used with a feminine polite you.

A rough breakdown:

• कर- = do
• -ेंगी = future ending here for polite feminine you

So करेंगी means will do or, depending on context, something like would do / will you do in a polite question.

Because Hindi often uses करना with another word to create a compound idea, सक्रिय करेंगी literally works like will make active = will activate.

Not by itself. सक्रिय is basically an adjective meaning active.

But Hindi often forms verbs by combining a word like this with करना:

• सक्रिय करना = to activate
  literally: to make active

So in this sentence:

• सिम कार्ड सक्रिय करेंगी = will activate the SIM card

This kind of structure is very common in Hindi, especially in formal language and with technical terms.

Hindi often expresses ideas like activate, clean, start, organize, etc. with a noun/adjective + करना structure.

So instead of one simple verb, Hindi may use:

• सक्रिय करना = activate
• साफ करना = clean
• बंद करना = shut/close
• शुरू करना = begin/start

Also, in modern spoken Hindi, people may use an English-based version too:

• सिम कार्ड एक्टिवेट करेंगी?

That is also very common in real life.
सक्रिय करेंगी sounds more Hindi-based and often a bit more formal.

Hindi usually follows Subject–Object–Verb order, while English usually prefers Subject–Verb–Object.

English:

• Will you activate the SIM card?

Hindi:

• क्या
  • you
    • SIM card
      • activate will-do?

So:

• आप = you
• सिम कार्ड = SIM card
• सक्रिय करेंगी = will activate

It is normal in Hindi for the main verb part to come at the end.

Hindi does not have articles like a, an, and the the way English does.

So सिम कार्ड can mean:

• a SIM card
• the SIM card

The exact meaning depends on context.

In this sentence, English may naturally translate it as the SIM card, but Hindi does not need a separate word for that.

Because को is often optional or unnecessary with an inanimate direct object like this.

Here:

• सिम कार्ड सक्रिय करेंगी is perfectly natural.

You may also hear:

• सिम कार्ड को सक्रिय करेंगी

That version puts extra focus or clarity on the object, but in many ordinary sentences को is simply left out.

So both can be grammatical, but the version without को is very normal.

It can do both, depending on context and tone.

Most literally, it is:

• Will you activate the SIM card?

But in real conversation, especially in service situations, it can also function like:

• Would you activate the SIM card?
• Could you activate the SIM card?

Hindi future forms are often used in polite questions in ways that overlap with English will/would.

Yes. कर देंगी adds a nuance of doing it for someone / getting it done / doing it as a completed helpful action.

Compare:

• सक्रिय करेंगी? = Will you activate it?
• सक्रिय कर देंगी? = Will you go ahead and activate it? / Would you activate it for me?

The देना in this kind of compound often adds a sense of helpfulness, completion, or ease. In many real-life situations, कर देंगी can sound a bit more natural and polite.

Sometimes, but it is not exactly the same in every context.

• सक्रिय करना is the more precise word for activate, especially for services, accounts, SIMs, features, etc.
• चालू करना usually means switch on / start / turn on

For a SIM card, सक्रिय करना is the better match if you mean activation in the telecom sense.

करेंगी is pronounced roughly like kareṅgī.

Important points:

• करे = ka-re
• the ें shows a nasalized e sound, often represented as eṅ
• गी = gī

So the whole word is roughly:

• ka-reṅ-gī

That nasal quality is part of the normal pronunciation of this future form.

In practice, it can be used for a polite singular female addressee. Depending on context, Hindi polite forms can also overlap with plural use, but learners should mainly understand this sentence as:

• speaking politely to one woman

For learning purposes, the main contrast is:

• करेंगे = masculine polite you
• करेंगी = feminine polite you

That is the key pattern to remember.