What was the percentage of net sales decline in Mobile Networks in the quarter 
-centric than the other businesses. Of course, that means that if and hopefully when we get the volumes up, really up in the new focus segments, there should be a lot of additional margin potential yet. Right now, we are still doing a lot of portfolio cleaning. There are a lot of old products that are getting to the end of their economic life.
There are also some nonperforming units, nonperforming products that we are cleaning up, and then we are increasing our focus and investment in the focus areas that I was talking about. And I believe that, that has the possibility to deliver good growth going forward. On top of all this, and I did talk about campus wireless also quite a lot, and then there is the strategic structural development that would start taking speed gradually, which is the development toward various as-a-service models where you actually want to offer certain functionalities, for example, in network security, network quality management and anomaly detection as-a-service. These are some of the initial services that we have just recently launched.
And then one thing that I also talked about already last time, I think, is this evolution of open interfaces where you want to hide the enormous network complexity from developers and offer a simple set of APIs through which networking functionality. For example, industrial vertical applications can be offered to users and that way, engaging the developer community in a much more simple and straightforward way than what has traditionally been the case in this type of networking applications and communications networks in general.
David Mulholland
Thank you, Frank. We'll now take the next question from Alex Duval of Goldman Sachs.
Alex Duval -- Goldman Sachs -- Analyst
I had a quick one on the U.S. market in wireless and Nokia's position there. I wondered, firstly, if you could talk a bit about what you see in terms of market demand, both this year and next year for that particular market on the wireless side? And secondly, related to that, there have obviously been some historic share losses. I wonder to what extent you feel given what you're saying today about an improved wireless offering that you could potentially regain some share and how much progress we could expect from that.
Pekka Lundmark -- President and Chief Executive Officer
Of course, it goes without saying that the 16% decline in net sales of Mobile Networks in the quarter is not a good achievement. But the point here is that this is something that we had been trying to say throughout the year, that the seasonality would be different. And this again, these go back to decisions that customers made earlier in the year 2020. Now the good news is that after those decisions in typically around mid-2020, we have not lost any more market share in North America.
We have had some smaller wins with some smaller operators. We, of course, then also secured a 5-year 5G deal with both T-Mobile and AT&T. So in the big picture, I would put it this way that we have now established a new baseline for our North American business, and that's not a bad baseline. On top of the Mobile Network position, we have strong position in Network Infrastructure and Cloud and Network Services, which were quite a lot actually able to compensate for what Mobile Networks lost in Q4 in North America.
Now listening to the capex plans of the key customers in America that is, of course, a reason for optimism. We see continued strong market demand there. And now very importantly, when we have a completely different product competitiveness than we had a year or two -- even two years ago, we have every reason to be hopeful and optimistic. And I don't think that when we are talking about targets in general, not only in North America, but in general, to now start to go after increasing market share.
I do not see that as an unrealistic target.Thank you, Alex. 
David Mulholland
Thank you, Alex. We'll now take our next question from Peter Nielsen at ABG. Peter, please go ahead. 
Peter Nielsen -- ABG Sundal Collier -- Analyst
Thank you very much. Ca
-centric than the other businesses. Of course, that means that if and hopefully when we get the volumes up, really up in the new focus segments, there should be a lot of additional margin potential yet. Right now, we are still doing a lot of portfolio cleaning. There are a lot of old products that are getting to the end of their economic life.
There are also some nonperforming units, nonperforming products that we are cleaning up, and then we are increasing our focus and investment in the focus areas that I was talking about. And I believe that, that has the possibility to deliver good growth going forward. On top of all this, and I did talk about campus wireless also quite a lot, and then there is the strategic structural development that would start taking speed gradually, which is the development toward various as-a-service models where you actually want to offer certain functionalities, for example, in network security, network quality management and anomaly detection as-a-service. These are some of the initial services that we have just recently launched.
And then one thing that I also talked about already last time, I think, is this evolution of open interfaces where you want to hide the enormous network complexity from developers and offer a simple set of APIs through which networking functionality. For example, industrial vertical applications can be offered to users and that way, engaging the developer community in a much more simple and straightforward way than what has traditionally been the case in this type of networking applications and communications networks in general.
David Mulholland
Thank you, Frank. We'll now take the next question from Alex Duval of Goldman Sachs.
Alex Duval -- Goldman Sachs -- Analyst
I had a quick one on the U.S. market in wireless and Nokia's position there. I wondered, firstly, if you could talk a bit about what you see in terms of market demand, both this year and next year for that particular market on the wireless side? And secondly, related to that, there have obviously been some historic share losses. I wonder to what extent you feel given what you're saying today about an improved wireless offering that you could potentially regain some share and how much progress we could expect from that.
Pekka Lundmark -- President and Chief Executive Officer
 Of course, it goes without saying that the 16% decline in net sales of Mobile Networks in the quarter is not a good achievement. But the point here is that this is something that we had been trying to say throughout the year, that the seasonality would be different. And this again, these go back to decisions that customers made earlier in the year 2020. Now the good news is that after those decisions in typically around mid-2020, we have not lost any more market share in North America.
We have had some smaller wins with some smaller operators. We, of course, then also secured a 5-year 5G deal with both T-Mobile and AT&T. So in the big picture, I would put it this way that we have now established a new baseline for our North American business, and that's not a bad baseline. On top of the Mobile Network position, we have strong position in Network Infrastructure and Cloud and Network Services, which were quite a lot actually able to compensate for what Mobile Networks lost in Q4 in North America.
Now listening to the capex plans of the key customers in America that is, of course, a reason for optimism. We see continued strong market demand there. And now very importantly, when we have a completely different product competitiveness than we had a year or two -- even two years ago, we have every reason to be hopeful and optimistic. And I don't think that when we are talking about targets in general, not only in North America, but in general, to now start to go after increasing market share.
I do not see that as an unrealistic target.Thank you, Alex. 
David Mulholland
Thank you, Alex. We'll now take our next question from Peter Nielsen at ABG. Peter, please go ahead. 
Peter Nielsen -- ABG Sundal Collier -- Analyst
Thank you very much. Ca