According to Bang Showbiz, the singer insists that a member of her entourage holds the phone away from her head during conversations.
A source said: "There have been various reports suggesting mobile phone use can increase your risk of developing cancer and brain tumours and even though there's no firm evidence, it really freaked her out.
"She's now insisting that whenever she makes a call, one of her team keys the numbers into her phone, then holds it up to her face so when she speaks it isn't too close to her head.
"She then listens to her calls on the speakerphone."
It is claimed that the 'Telephone' star has a series of bizarre requests, such as asking her security team to carry her to various locations because she only designates a certain amount of time each day for walking.
The source added: "Everyone around GaGa tries to tolerate her annoying and weird behaviour because they know it's likely to be just another phase."
