I had got gift iphone 5s from USA Do i Need to Pay Customs?

The mobile is not in box. Its just have charger and handset. And the handset value is $200. And My Friend is saying that you do not need to pay any customs. Its a gift. But Day Before yesterday i had got a letter from custom department. They didn't mention any thing. How much they are going to charge. When i had contact them they says that you will get another letter from customs.
Do any one have experience with it?

You have to pay customs on anything valued at over $100 whether used or new. Customs will advise how much you owe

Yes you have to pay customs duty.
Explanation if needed below.
Custom Duty on Import of Gifts
All goods imported into India from abroad is liable to duties of Customs under Section 12 of the Customs Act and also is liable to all the restrictions under the Foreign Trade (Development & Regulations) Act 1992. However, the Government has exempted gifts received from abroad by persons residing in India from the whole of duties of Customs and from restriction under FT (D&R) Act. At present, import of goods upto the value of Rs. 5,000/- is allowed as gift, duty free. This exemption is allowed only for bonafide gifts imported by air or post. For the purpose of calculation of this value of Rs. 5,000/- the air freight or postal charges paid are not added.

Custom Clearance Permit of Imported Gifts
Import of gifts items, which is freely importable need no custom clearance permit. However, there are certain gift items that are not freely importable. In such a situation a special permit is required by the custom authorities. The main objective of the custom clearance permit is to allow the import of gift items which is other wise restricted or prohibited by Government of India for the use of charitable, religious or educational institute registered under a law or approved by the Central or State Government.

Exception to Pay Duty
No exemption is applicable if purchases are made in foreign countries which are imported into India and also not applicable if purchases are made through foreign currency transactions.
Any international purchases made at any online store/bay/forum/personal site/blog and get them declared as 'gift' or 'sample' and valued under INR 5,000/- does not simply satisfy the 'exemption' criterion as stated above. As because, this is actually a international purchase involving foreign currency transaction. It is quite likely that an absurd amount of duty may be levied irrespective of the rate chargeable as above. Therefore it's better to ask the seller to attach the invoice stating as much info as possible along with the shipment and provide true statement in the Dispatch Note ***/and Customs Declaration Form.