Prison officers have warned micro mobile phones sold on the internet for £40 could be smuggled into jails.
The phones look like a car key fob and carry logos of upmarket car brands.
They can be used for calls and texting but do not have internet access.
The prison officers’ union said: “The use of mobiles in prisons is a massive problem for us. This gadget will make life more difficult.”
Mobiles are used behind bars to control criminal activities on the outside and act as a form of currency.
Owning and using one can add a further two years to a prisoner’s sentence.
There are already 41,000 confiscated phones in storage, costing the Prison Service £20,000 a year..
But under a proposed law, governors will be able to destroy them and other banned items.
Prisons Minister Jeremy Wright said: “We are determined to address problems caused by mobile phones.” Pls they should smuggle it here cos we need to be in touch with our loved ones who are in jail [#JustSaying]