Yes, you can change bands on the Charge 2. Yes, you can see WHEN someone texts you, but not the actual text message. You can also see when someone is calling you. Differences between the original and the 2: Changeable bands, sleeker design, charger actually grips onto the band now (much better), there is GPS capability when walking/running/biking outside, more options for the clock face, and more health features on the Fitbit mobile app with the upgraded one.