message: dont autocapitalize username
diff: @@ -197,6 +197,8 @@ export const UsernameScreen = ({navigation}) => {
  returnKeyType={"send"}
  textContentType={"username"}
  onBlur={validate}
  + autoCompleteType="username"
  + autoCapitalize="none"
  />
  {/* <Button
  style={{marginTop: 24}}
  