What was QCOM's QCT design win pipeline as of the end of the second quarter of 2019? 
ng a strong and differentiated technology position is an important asset for our shareholders.
This past quarter was a tipping point for 5G when in February at Mobile World Congress, representatives from major Android device manufacturers, network operators, and infrastructure providers joined QUALCOMM in celebrating our collective achievement in bringing 5G to life.
Since that event, I am pleased to report that the rollout of 5G has officially begun. In the last months, we have seen carriers and OEMs announce and launch commercial 5G services and devices in North America, South Korea, Europe, and most recently, China, representing the first global rollout of a new wireless standard.
The arrival of 5G in China is particularly exciting as it brings 5G to the largest mobile user base in the world. To-date, the vast majority of the announced 5G devices for China include QUALCOMM's Snapdragon chipsets.
Second, we enter into the 5G era with strength in products, a favorable competitive dynamic, and more customer diversity and technology breadth than in earlier generations of cellular. This is due to QUALCOMM's continued focus on investing in innovation and R&D during a time of much activity and attention on our company.
We've transformed QCT by diversifying our customer base, focusing our investments, and streamlining our cost structure. Our year-to-date non-Apple QCT operating income doubled compared to a two year-ago period putting us in a strong position to grow revenues and profits as we began ramping 5G in addition to supplying Apple under this new agreement.
As 5G network launches continue to grow, so does our QCT design win pipeline. We now have over 75 5G design wins more than double the number we announced last January, driven by OEM designs with our first and second generation 5G modems.
In February, we announced our second generation 5G modem, the Snapdragon X55, our second generation 5G RF front-end solutions, and the world's first mobile platform with integrated 5G, all of which position us to power the second wave of 5G devices launching in late 2019 and early 2020 to drive mainstream adoption of 5G.
Our early investments in 5G now allow us to offer the world's first modem-to-antenna system for commercial 5G new radio smartphone devices, spending millimeter-wave and sub-6 gigahertz bands including baseband, RF transceiver, RF front-end components, and millimeter wave antenna modules. This systems approach is creating a benchmark for 5G RF front-end performance. QUALCOMM is heavily engaged as a critical partner to leaders across many industries as they see 5G mobility as a foundational technology for their digital transformation.
Third, our cost structure and investment focus are aligned with the opportunities ahead. We will continue to invest where we can leverage our core competencies and bring innovative solutions to large markets. In 5G, this presents opportunities for growth in our core cellular market in addition to many adjacent industries as they leverage 5G to accelerate their digital transformation.
In summary, with our agreements with Apple, the beginning of the 5G ramp are focused on operational execution and capital return, we think we've laid the groundwork for growth in revenue and EPS and stockholder returns over the next several years.
As a management team, we are committed to driving stockholder value by taking thoughtful and deliberate actions that we believe will ensure the long-term growth of our company as you have seen.
We appreciate the positive reaction from investors and analysts through our recent announcement with Apple, especially the feedback from many stockholders over the last two weeks who have recognized and appreciated our commitment to sustaining Qualcomm's long-term differentiation and focus on technology and innovation.
I would now like to turn the call over to Dave.
David Wise -- Chief Financial Officer
Thank you Steve and good afternoon everyone. We are pleased to announce strong second quarter results with GAAP revenues of $5 billion above the midpoint of our guidance rang
ng a strong and differentiated technology position is an important asset for our shareholders.
This past quarter was a tipping point for 5G when in February at Mobile World Congress, representatives from major Android device manufacturers, network operators, and infrastructure providers joined QUALCOMM in celebrating our collective achievement in bringing 5G to life.
Since that event, I am pleased to report that the rollout of 5G has officially begun. In the last months, we have seen carriers and OEMs announce and launch commercial 5G services and devices in North America, South Korea, Europe, and most recently, China, representing the first global rollout of a new wireless standard.
The arrival of 5G in China is particularly exciting as it brings 5G to the largest mobile user base in the world. To-date, the vast majority of the announced 5G devices for China include QUALCOMM's Snapdragon chipsets.
Second, we enter into the 5G era with strength in products, a favorable competitive dynamic, and more customer diversity and technology breadth than in earlier generations of cellular. This is due to QUALCOMM's continued focus on investing in innovation and R&D during a time of much activity and attention on our company.
We've transformed QCT by diversifying our customer base, focusing our investments, and streamlining our cost structure. Our year-to-date non-Apple QCT operating income doubled compared to a two year-ago period putting us in a strong position to grow revenues and profits as we began ramping 5G in addition to supplying Apple under this new agreement.
As 5G network launches continue to grow, so does our QCT design win pipeline. We now have over 75 5G design wins more than double the number we announced last January, driven by OEM designs with our first and second generation 5G modems.
In February, we announced our second generation 5G modem, the Snapdragon X55, our second generation 5G RF front-end solutions, and the world's first mobile platform with integrated 5G, all of which position us to power the second wave of 5G devices launching in late 2019 and early 2020 to drive mainstream adoption of 5G.
 Our early investments in 5G now allow us to offer the world's first modem-to-antenna system for commercial 5G new radio smartphone devices, spending millimeter-wave and sub-6 gigahertz bands including baseband, RF transceiver, RF front-end components, and millimeter wave antenna modules. This systems approach is creating a benchmark for 5G RF front-end performance. QUALCOMM is heavily engaged as a critical partner to leaders across many industries as they see 5G mobility as a foundational technology for their digital transformation.
Third, our cost structure and investment focus are aligned with the opportunities ahead. We will continue to invest where we can leverage our core competencies and bring innovative solutions to large markets. In 5G, this presents opportunities for growth in our core cellular market in addition to many adjacent industries as they leverage 5G to accelerate their digital transformation.
In summary, with our agreements with Apple, the beginning of the 5G ramp are focused on operational execution and capital return, we think we've laid the groundwork for growth in revenue and EPS and stockholder returns over the next several years.
As a management team, we are committed to driving stockholder value by taking thoughtful and deliberate actions that we believe will ensure the long-term growth of our company as you have seen.
We appreciate the positive reaction from investors and analysts through our recent announcement with Apple, especially the feedback from many stockholders over the last two weeks who have recognized and appreciated our commitment to sustaining Qualcomm's long-term differentiation and focus on technology and innovation.
I would now like to turn the call over to Dave.
David Wise -- Chief Financial Officer
Thank you Steve and good afternoon everyone. We are pleased to announce strong second quarter results with GAAP revenues of $5 billion above the midpoint of our guidance rang