Automatic Country Code Detection on Signup Form

Please add automatic country code detection to the customer registration form.

Currently, customers must manually select their international dialing code when entering their mobile phone number. This creates unnecessary friction, particularly for users registering from different countries.

Requested functionality:

1. Automatically detect the visitor's country using IP-based geolocation or browser locale.

2. Preselect the corresponding international dialing code.

3. Display the appropriate country flag and dialing code.

4. Allow customers to manually change the country code.

5. Provide a sensible default country if automatic detection fails.

Examples:

• India → +91

• United States → +1

• United Kingdom → +44

The feature should work consistently on desktop and mobile devices.

Expected benefits:

• Easier customer registration.

• Fewer phone number formatting errors.

• Better international user experience.

• Reduced friction and potentially improved signup conversion rates.