In this video, tech and telecom analyst Andrew Tonner discusses three areas Nokia (NOK -2.01%) investors need to watch. First, keep an eye on Nokia sales numbers, particularly for its new Lumia smartphones. A lot is riding on the success of this smartphone launched last December. Second, can Nokia keep a robust innovative product pipeline going? Apple and Google are good at this. Nokia will have to be in order to compete long term. Finally, investors must stay tuned to the joint venture with Siemens to build communications equipment. This has struggled in the past and how it pans out in the future will impact Nokia's earnings.