Yes, select Menu > Messaging > IMs.
- Can I still use Email on my Nokia S40, S60 (Symbian) or Asha device?
- When using Twitter for Nokia, can I post photos from Gallery?
- Does Twitter for Nokia support right-to-left languages?
- When using Twitter for Nokia, can I edit my Twitter profile?
- What is the difference between Twitter for Nokia and previous Social clients in S40?