Strange symbol on xperia mini

[purejonesy]

HI.
The misses has done something to her s/e/ xperia mini. It is now showing a symbol top left of screen. It shows what appears to be 2 white boxes and a red cross.
does anyone know why this is?
thanks in advance.

 

[syko67]

I think that is the data disabled notification

 

[purejonesy]

is there anyway to get rid of it?

 

[fizl]

Turn data back on?