Do you deduct the phone bill by sending verification code?

You need to deduct the phone bill to send the verification code.

Applying verification code is a common way adopted by many websites, which can not only prevent malicious password theft, ticket brushing and forum flooding, but also effectively prevent a hacker from constantly trying to log in to a specific registered user violently through a specific program. Captcha questions are generated and judged by computers, but only humans can answer them. The computer can't answer the Captcha question, so the user who answers the question can be considered as human.

Telephone bill downtime

Telephone charges usually refer to the prepaid expenses of telephone calls. When the phone bill balance is insufficient, it will cause downtime, which will lead to the service provider unable to continue to provide services to users and the phone can not be used. Sometimes it also refers to the cost of telephone consumption, so telephone charges generally refer to prepaid or consumer expenses. If China Mobile, China Unicom and China Telecom are in arrears, they can go to the business hall of the mobile phone card operator to recharge their phone bills, or they can choose to recharge their phone bills online. Generally, there will be a discount of 0.5- 1%, but you can't participate in various activities in physical stores or business halls.