Yes, you have to submit documents to the bank to get your credit card. You have to provide your documents to prove your identity, residential address, and income. If you cannot submit all these vital documents to a bank, you would not get approval for a credit card. In addition, these documents are significant to verify if a person can pay the monthly bills of a credit card or not.

If NRI applicants cannot provide their passport to the bank for some problems, they can provide their appointment letter, driving license and many others to the bank for document verification. 

The full form of FATF is the Financial Action Task Force. If an NRI applicant is belonging to a FATF country, they can attest all their documents from an overseas banker, who is licensed for operating in that nation. However, in a non-FATF country, every document of the customer has to be attested by an Indian Consulate or a foreign notary. This rule is applicable to the original documents of an NRI too. 

The documents that you need to submit to prove your age incorporate the 10th standard school certificate/ marksheet, voter's ID card, birth certificate, or passport.

Yes, you can increase the credit limit of your credit card. First, you have to place your request to the credit card issuer about a hike in your card's credit limit. You must submit additional documents including income proof to the issuer to complete the procedure. The representatives of the bank would decide if they want to increase the credit limit on your credit card or not. They would evaluate your documents. In addition, the cardholder's credit card rules, old history of repaying loans, and dues on the credit card of the cardholder would be also evaluated in this matter.

You can get discounts on your dining bills, beneficial cashback offers, reward points on paying bills in the restaurant. You can get frequent discount offers on your dining bills from those restaurants, which have a tie-up business with a bank, which issued you a credit card. In the previous years, the premium credit cards only provided dining benefits, however, at present, standard cards also offer such benefits to the customers.

It depends on your credit card issuer how many supplementary credit cards you can own. However, an applicant is able to apply for approximately three supplementary cards for their family members, such as children, parents, siblings, and spouse.