N8 Belle with '1' in status bar?

[southliving]

Greetings!

I have checked, couldn't find an answer to this elsewhere on here, if I've missed it, really sorry. This may seem trivial, but sadly it really is annoying me.

Recently upgraded without any problems on N8 to Belle, and there is an annoying number 1 on the status bar. I'm unable to figure out why its there. None of the screenshots on Belle shows a 1 anywhere.
The status bar (from left to right): CMCC (on left, then space to right), 1 (space) Wifi icon, signal icon, battery icon, time.
No missed calls, no messages unread, emails all read, memory card inserted, Chinese Mobile Sim inserted.

A number 1 also shows up in the call image when an incoming call arrives, but I can't say for sure if it's the same '1', as this could be 'line 1'.

Thanks...

[malcolmlau]

The 1 denotes 'line 1' as its possible to have more than 1 number on your SIM.