[ 80 ]14 Use prepaid servicesWith prepaid service, you buy wireless networkservices in advance. Your phone works the sameway it did before, with some additional features.Prepaid service may not be available from yourwireless service provider. Contact the serviceprovider for details.Note: When no more charging units or currency units are left,calls may only be possible to the emergency number programmedinto your phone (for example, 911 or other official emergencynumber).• MANAGE PREPAID SERVICEAfter you sign up with your service provider for prepaid service, you needto activate the Prepaid menu. This menu appears on your screen only ifyou’ve activated the service.ACTIVATE PREPAIDTo activate prepaid services, enter the following sequence:(*#7766#)The message Prepaid menu enabled appears on the screen.DEACTIVATE PREPAIDTo deactivate prepaid services, enter the following sequence:(*#77633#)The message Prepaid menu disabled appears on the screen.