Number "1" displayed next to signal bar after unlocking?

[Nanda]

Hello all,

this may be a TOTAL newbie question, but still... it's nagging me as I've tried (nearly) everything.

After unlocking all SP locks using Rolis 1.8, a bold "1" appeared on the top left-hand corner of my 3310 display (right next to the signal strenght bar).

What is it? How do I get rid of it?

Thanks!