se recomienda restablecer los ajustes del tlf se explica que si continua el problema es necesario realizar una copia de seguridad y restaurar con itunes
sound of callsIt is recommended to reset the phone settingsis explains that if continuous the problem is necessary to make a copy of safetyand restore with itunes
Sound of callsIt is recommended to restore the settings of the TLFExplains that if the problem Continues, it is necessary to make a backupAnd Restore with iTunes