“Britney's inner-circle keep a close eye on her to ensure she keeps herself together. One of the rules is she gave up her cell phone. That helps them keep her under control," The Sun quoted a source as saying.
It may be recalled that Britney's former bodyguard Fernando Flores, accused her of making unwanted advances. He claimed that she sent her nude photos to him. So, the singer, who is currently touring US, has been banned from using using mobile phones to avoid possible allegations against her.