fix #226

Author: bl00mber

src/index.js

@@ -313,13 +313,13 @@ class PhoneInput extends React.Component {
  let newSelectedCountry, formattedNumber;
 
  // if new value start with selectedCountry.dialCode, format number, otherwise find newSelectedCountry
- if (selectedCountry && startsWith(value, selectedCountry.dialCode)) {
+ if (selectedCountry && startsWith(value, prefix + selectedCountry.dialCode)) {
  formattedNumber = this.formatNumber(inputNumber, selectedCountry);
  this.setState({ formattedNumber });
  }
  else {
  newSelectedCountry = this.guessSelectedCountry(inputNumber.substring(0, 6), country, onlyCountries, hiddenAreaCodes) || selectedCountry;
- const dialCode = newSelectedCountry && startsWith(inputNumber, newSelectedCountry.dialCode) ? newSelectedCountry.dialCode : '';
+ const dialCode = newSelectedCountry && startsWith(inputNumber, prefix + newSelectedCountry.dialCode) ? newSelectedCountry.dialCode : '';
 
  formattedNumber = this.formatNumber(
  (this.props.disableCountryCode ? '' : dialCode) + inputNumber,