unusual things happen when phoning my daughters iphone

[yelnats]

can anyone shed any light on this when my daughter phones me i start getting continuous beeping and a series of numbers
appear on my phone now this only happens when my daughter phones me and it does not happen with anyone else
can anyone shed any light on this and fix the issue
many thanks

 

[bear7962]

What type of Phone calling service is she using?

 

[carolineM]

can anyone shed any light on this when my daughter phones me i start getting continuous beeping and a series of numbers
appear on my phone now this only happens when my daughter phones me and it does not happen with anyone else
can anyone shed any light on this and fix the issue
many thanks

Is this a jailbroken iPhone ?