The daughter-in-law of hate cleric Abu Hamza was arrested at his jail for allegedly trying to smuggle in a sim card under her burka.
Guards rumbled Chayme, 26, in a routine search as she went to visit the hate preacher.
Hamza's eldest son Mohamed Kamel Mostafa was also nicked over the contraband the next day. The find raised fears that hook-handed Hamza has access to a mobile in prison where he is awaiting a US bid to ext-radite him for allegedly running terrorist training camps.
The tiny microchip was found in a pocket in clothing under her flowing black robes at Belmarsh Jail in Woolwich, South-East London, last Friday afternoon.
Police were called and she was taken to nearby Plumstead nick. She is said to have become agitated after police demanded she remove her veil for a custody photo. One source said: "She felt it was a violation of her rights as a Muslim woman to have her mugshot taken.
"It was explained that she had to comply with the law and she finally agreed to it."
Chayme claimed she didn't realise she had the sim card, sources said. But a prison insider said: "There are clear orders on signs in the visiting area that nobody should carry through any items."
Mostafa, 29, was arrested after voluntarily agreeing to attend Plumstead police station. The pair have been bailed until February pending further inquiries.
Father-of-eight Hamza, 50, was jailed for seven years in 2004 for soliciting murder and inciting racial hatred.
He completed the sentence but is still being held in the secure unit pending a European Court of Law decision to extradite him to America.
A security source said: "The very idea of Hamza having access to the outside world while in prison has to be a serious concern."