How to set specific format of number on textfield?

[raghavnaphade]

Describe the bug A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior:

1. Go to '...'
2. Click on '....'
3. Scroll down to '....'
4. See error

Expected behavior A clear and concise description of what you expected to happen.

Screenshots If applicable, add screenshots to help explain your problem.

Smartphone (please complete the following information):

• Device: [e.g. iPhone6]
• OS: [e.g. iOS8.1]
• Version [e.g. 0.6.0]

FlagPhoneNumber (please complete the following information):

• Version [e.g. 0.6.0]

Additional context Add any other context about the problem here.