There may be four reasons as below: a.Out-of-stock items issue: Please pay attention to items' stock count. If items are in low stocks, they may be purchased by other customers, which caused you cannot check out. Please remove these items and check out again. b.Shipping address issue: Please reconfirm your address and phone number are available or try to edit them again. c.Poor connection issue: Please refresh the page and try again

There is no option for changing the registered email or phone, you need to create another account.

To add an item to your cart, click the ?Add to Cart? link, you will be brought to your "Shopping cart" page where you can then enter the quantity of the item that you would like to order . After you have entered a quantity, you can continue shopping or choose to complete your order.

First, click on the ? cart? link in the upper-right corner of your computer screen. This will allow you to view all items currently in your cart. Once you have identified the item that you would like to delete, click on the ?Remove? check box .

You can make changes to your order before payment or just cancel this order to make a new one. But you had better not change it after you make payment for your order because it may delay your order preparation.

An OTP (One Time Password) or verification code is a password/code used to verify your mobile number or email ID when you log into your Flipkart account for the first time. OTP verification will be also be done in other cases like creating an account, password recovery, and updating email/mobile details.