Some apps handle user error actions

Ofo Small Yellow Car Login module

1, do not enter the phone number, get verification code and verify the phone two options are not available (gray)

Get verification code available only when 11 digits are entered (yellow)

2, enter the irregular mobile phone number, click to get the verification code will prompt "mobile phone number is not legal"

3, enter the mobile phone number according to the rules, click to get the verification code will appear "input picture Verification Code" interface, if the user entered a picture verification code is incorrect, will prompt "code error, please re-enter"

4. Enter a phone number that conforms to the rule but not in use, and after the countdown is over, the Get Verification code option becomes available again

5, the wrong verification code, prompt "input error, re-enter

Some apps handle user error actions