电话漫游 meaning in English

roaming

You can subscribe to a roaming service or bring along a prepaid sim card issued by one of the mainland mobile network operators
但你可以选用流动电话漫游服务，或者带备国内流动网络供应商发出的预缴电话智能( sim )卡。
Use a roaming service : if you have subscribed to roaming service that is accessible to a mainland network , dial 00852 and then the phone number of a family member , friend or hong kong police station
使用漫游服务：若使用流动电话漫游至内地网络，可利用漫游服务先拨00852 ，然后拨所需的本港号码致电本港亲友或就近的本地警署求助。