In terms of credit limit, you can use your mobile phone number reserved at his home, and edit the short message: "Last four digits of 3 13 # card number" is 95533, which will reply your credit card available limit as of the time of sending the short message.
(Because credit cards are used for personal consumption, there will be a credit card limit for wholesale and real estate merchants, and there will also be a limit for some high-risk merchants. The specific amount will be set by the bank. )
If it is an online transaction, the account payment function is generally used (the first online payment will require the input of credit card information, and then it will be completed directly through the way of "card number+mobile phone dynamic verification code", which is very safe and simple to operate. ) there is a certain limit. The daily limit is RMB per card 1 1,000, and online shopping should be enough at ordinary times. The limit of some e-ticket merchants such as travel and air tickets is higher, which is subject to the actual payment website. Considering the safety of using the card, the bank cannot change this limit.