What is the 12% 5G number for the year 
global 5G market and significantly streamlines the operations of the Ctrack business, aligning it squarely with our enterprise market focus. We intend to use the proceeds to reinvest in the strategy points mentioned earlier in my comments. The deal is subject to local government review, and is expected to close in the second quarter of 2021. And finally, some comments on our outlook for the rest of 2021.
As mentioned before, there are separate market dynamics going on in the 4G and 5G segments of our business. Continued expansion of our 5G customer base, and the launch of our mobile broadband and fixed wireless access products throughout the year is very encouraging and the long-term growth trajectory of 5G revenue is clear. Given the market is transitioning from 4G to 5G, it is always challenging to predict the exact trajectory of this technology migration. In addition, factors specific to us that add to this complexity are expected lower demand of our legacy 4G products, and the pending sale of the Ctrack South Africa operations next quarter. Taking everything into consideration, we expect the second half of the year to be stronger than the first half. And we'll share more color on this going forward.
Thanks for listening. And with that, I will turn the call back over to Dan and some final comments.
Dan Mondor -- Chairman of the Board and Chief Executive Officer
Thank you, Craig. COVID turned the world upside down in 2020, which both tested and demonstrated our resilience during these extraordinary times. Despite the numerous challenges, we're on an incredible pace of bringing new 5G products to market and winning new customers. I want to express a sincere thank you to every Inseego employee who did an amazing job in 2020 despite unprecedented circumstances. The carrier and enterprise 5G addressable market combined is over $50 billion. With best-in-class performance, security and reliability of our products, we are confident in our goal to become the global 5G technology partner of choice for carriers and enterprise. 2020 was a monumental year, and we expect 2021 to be even more exciting for the company and investors.
Questions and Answers:
Operator
Thank you, Mr. Mondor. [Operator Instructions] Our first question will come from Scott Searle with ROTH Capital. Please go ahead.
Scott Searle -- ROTH Capital Partners, LLC -- Analyst
Hey, good afternoon. Thanks for taking my questions. Hey, just a quick clarification, Craig. I want to make sure I understood the 12% 5G number was that for the fourth quarter or was that for the year? And also to clarify on the R&D front, is there a -- do you have some more granularity as it relates to certification costs, which tend to be lumpier versus anything that's started to flow through related to software capitalization?
Craig Foster -- Chief Financial Officer
Sure, so let me start with the first question you had, which was sorry?
Dan Mondor -- Chairman of the Board and Chief Executive Officer
12% was the year.
Scott Searle -- ROTH Capital Partners, LLC -- Analyst
For the year, OK.
Craig Foster -- Chief Financial Officer
Yeah, that was for the year, sorry. And then regarding the capitalization of software and stuff, so we've -- for Q4, we've definitely seen a peak of our costs as it relates to the capitalization and amortization relating to software development costs, internal and external. And I think that you're going to see that tick down substantially going forward, more normalizing toward where we were in Q3 of this year.
Scott Searle -- ROTH Capital Partners, LLC -- Analyst
Got you, helpful. And just digging in on the Ctrack front, I want to clarify. So the intention at this point is to retain the remaining Ctrack businesses that are not South African based, and ultimately kind of fold that into the enterprise business that you're developing. Is that correct?
Dan Mondor -- Chairman of the Board and Chief Executive Officer
Yeah, yeah. Scott, it's the -- it's sort of the rest of world assets that we're keeping, are, UK, Western Europe, Australia/New Zealand, which importantly line
global 5G market and significantly streamlines the operations of the Ctrack business, aligning it squarely with our enterprise market focus. We intend to use the proceeds to reinvest in the strategy points mentioned earlier in my comments. The deal is subject to local government review, and is expected to close in the second quarter of 2021. And finally, some comments on our outlook for the rest of 2021.
As mentioned before, there are separate market dynamics going on in the 4G and 5G segments of our business. Continued expansion of our 5G customer base, and the launch of our mobile broadband and fixed wireless access products throughout the year is very encouraging and the long-term growth trajectory of 5G revenue is clear. Given the market is transitioning from 4G to 5G, it is always challenging to predict the exact trajectory of this technology migration. In addition, factors specific to us that add to this complexity are expected lower demand of our legacy 4G products, and the pending sale of the Ctrack South Africa operations next quarter. Taking everything into consideration, we expect the second half of the year to be stronger than the first half. And we'll share more color on this going forward.
Thanks for listening. And with that, I will turn the call back over to Dan and some final comments.
Dan Mondor -- Chairman of the Board and Chief Executive Officer
Thank you, Craig. COVID turned the world upside down in 2020, which both tested and demonstrated our resilience during these extraordinary times. Despite the numerous challenges, we're on an incredible pace of bringing new 5G products to market and winning new customers. I want to express a sincere thank you to every Inseego employee who did an amazing job in 2020 despite unprecedented circumstances. The carrier and enterprise 5G addressable market combined is over $50 billion. With best-in-class performance, security and reliability of our products, we are confident in our goal to become the global 5G technology partner of choice for carriers and enterprise. 2020 was a monumental year, and we expect 2021 to be even more exciting for the company and investors.
Questions and Answers:
Operator
Thank you, Mr. Mondor. [Operator Instructions] Our first question will come from Scott Searle with ROTH Capital. Please go ahead.
Scott Searle -- ROTH Capital Partners, LLC -- Analyst
 Hey, good afternoon. Thanks for taking my questions. Hey, just a quick clarification, Craig. I want to make sure I understood the 12% 5G number was that for the fourth quarter or was that for the year? And also to clarify on the R&D front, is there a -- do you have some more granularity as it relates to certification costs, which tend to be lumpier versus anything that's started to flow through related to software capitalization?
Craig Foster -- Chief Financial Officer
Sure, so let me start with the first question you had, which was sorry?
Dan Mondor -- Chairman of the Board and Chief Executive Officer
12% was the year.
Scott Searle -- ROTH Capital Partners, LLC -- Analyst
For the year, OK.
Craig Foster -- Chief Financial Officer
Yeah, that was for the year, sorry. And then regarding the capitalization of software and stuff, so we've -- for Q4, we've definitely seen a peak of our costs as it relates to the capitalization and amortization relating to software development costs, internal and external. And I think that you're going to see that tick down substantially going forward, more normalizing toward where we were in Q3 of this year.
Scott Searle -- ROTH Capital Partners, LLC -- Analyst
Got you, helpful. And just digging in on the Ctrack front, I want to clarify. So the intention at this point is to retain the remaining Ctrack businesses that are not South African based, and ultimately kind of fold that into the enterprise business that you're developing. Is that correct?
Dan Mondor -- Chairman of the Board and Chief Executive Officer
Yeah, yeah. Scott, it's the -- it's sort of the rest of world assets that we're keeping, are, UK, Western Europe, Australia/New Zealand, which importantly line