Q: when i am updating my application in my i phone 5s asking payment who i can change

Hi shijingiri,

If you are being prompted to update your iTunes billing information, follow the steps below.  Many times you are being asked to verify expiration date or security code.

Change or remove your Apple ID payment information

Use your iPhone, iPad, or iPod touch

1. On the Home screen, tap Settings.
2. Tap App and iTunes Stores.
3. Tap your Apple ID. 
4. Tap View Apple ID. You might need to sign in.
   
   
   

 

1. Tap Payment Information. If you're using Family Sharing, you might not see Payment Information. Only your family organizer can update your family’s payment information. Learn more about payment information and Family Sharing.
2. Change or remove your information. To remove your payment method, select None. Learn what to do if you don't see None or can't select it. 
   
    
3. 
    
4. Tap Done.

If you change your payment method to a credit card, the iTunes Store places a temporary authorization hold on your credit card to verify your updated account information.

Take care,