The alarm noise is accompanied by a message, reading "This phone is stolen".
The phone is also automatically disabled, with contact numbers, texts, images and emails removed.
Detective Superintendent Steve Bending, head of the National Mobile Phone Crime Unit, said: "The NMPCU is supportive of measures that make mobile phones less desirable items to steal and worthless in the hands of those who seek to profit from mobile phone criminality.
"Any opportunity to disable a mobile phone and render it useless, should it be stolen, is welcomed."
According to the BBC's Home Affairs Correspondent, Danny Shaw, thefts of mobile phones are on the increase.
Some services have been developed to block the use of stolen SIM cards and handsets, but these are not foolproof, he went on.
He also added that the cost of the service will be almost £10 a month, which may prove prohibitive to some.
