frameworks/opt/telephony/src/java/com/android/internal/telephony/PhoneBase.java:706: error: cannot find symbol
                final Locale l = Locale.forLanguageTag(carrierLocales[i + 1].toString().replace('_', '-'));
                                       ^
  symbol:   method forLanguageTag(String)
  location: class Locale
frameworks/opt/telephony/src/java/com/android/internal/telephony/MccTable.java:264: error: cannot find symbol
                        final Locale locale = Locale.forLanguageTag(locales[i]);
                                                    ^
  symbol:   method forLanguageTag(String)
  location: class Locale
frameworks/opt/telephony/src/java/com/android/internal/telephony/MccTable.java:278: error: cannot find symbol
                            bestMatch.toLanguageTag());
                                     ^
  symbol:   method toLanguageTag()
  location: variable bestMatch of type Locale
Note: Some input files use or override a deprecated API.
Note: Recompile with -Xlint:deprecation for details.
Note: Some input files use unchecked or unsafe operations.
Note: Recompile with -Xlint:unchecked for details.
3 errors