So far, no mobile phone company has been able to make subscribers dance to its tune with a wildly popular, downloadable-to-handset music service. Yet Nokia, the world’s biggest maker of mobile phones, still wants in on the action, so it’s announcing that the first handset preloaded with its Comes with Music service will be sold in the United Kingdom in October. The subscription-based service is already making news with one big difference: Once your membership comes to an end, you’ll still be able to keep all the tracks you downloaded.