What was the year-to-date sales growth for ADAS in Q3 
icant opportunities for future growth. Please turn to Slide 5.
Within Advanced Connectivity we see 5G as a multiyear growth opportunity for Rogers where market indications continue to point toward increased deployments in 2020. At a recent forum China Mobile increased their target for 5G coverage to 340 cities by the end of next year underscoring their expansion plans. This followed recent news from Chinese telecoms that advanced subscriptions for 5G service which is not yet available have already reached approximately 9 million. Third-party experts expect 2020 5G deployments to be in the range of 600000 base stations which at that scale would provide an opportunity for substantial growth in our 5G wireless infrastructure business next year. Low earth orbit or LEO is a significant emerging growth opportunity within Advanced Connectivity. Several companies are competing to deploy large constellations of satellites that would provide high-speed internet to underserved areas. Rogers is well-positioned to capitalize on this opportunity given our tremendous strength in the materials technologies needed to enable the complex antenna solutions that will be part of the receiver systems located on Earth. We are also encouraged by the progress of some companies in this sector to launch commercial services. For example in recent months one leading company announced plans for broadband internet coverage in targeted areas in 2020 with full global coverage by the end of 2021. Looking to advanced mobility we remain optimistic about the strong opportunities in EV and HEVs. A recent IHS market report projects that through 2025 sales of EVs and HEVs will increase at a compounded annual growth rate of approximately 30%. These expectations for ambitious growth are underpinned by the plans of leading automakers and reinforce that this is a growing sustainable market for Rogers' Power Electronics Solutions. One example is VW which recently unveiled the first model in its new all-electric brand that will be delivered to customers early next year. This is the first step in VW's plan to sell up to 3 million EVs and HEVs annually by 2025.
Additionally, Daimler recently announced that they will discontinue all future development of internal combustion engines further signaling the shift in focus to electric vehicles. By 2022 Daimler is scheduled to bring 10 all-electric vehicles to market and plans to eventually electrify the entire Mercedes Benz portfolio. Rogers is also targeting EV charging infrastructure which is a related emerging growth opportunity for our Power Electronics Solutions. Please turn to Slide 6. ACS third quarter net sales were $79 million a decrease of 15% from the prior quarter and an increase of 10% versus the prior year. As discussed earlier this decline is primarily attributed to lower 4G and 5G sales. ADAS demand remained strong in Q3 and year-to-date sales have grown 8% compared to 2018. Aerospace and defense sales increased 17% versus Q2 and year-to-date results are up over 20% versus the prior year. This market segment is highly program-dependent and while we don't anticipate demand for these applications to grow at the same rate into the future we do expect stable and consistent high single-digit growth over time. As we look ahead we anticipate that 4G and 5G demand will continue to be soft through the end of the year. However we expect 5G demand to rebound in the first half of 2020 with the next wave of deployments. Turning to Slide 7 in Q3 EMS net sales were $95 million a slight increase compared to Q2. Seasonally strong portable electronics sales drove the sequential increase in revenue. A decline in demand for general industrial and EV/HEV battery applications partially offset the growth in portable electronics. Year-to-date sales of applications for EV/HEV battery pads and battery pack sealing systems have increased 29% versus the prior year highlighting the excellent growth opportunity in this area. The lower Q3 revenue is the result of the recent decline in the China EV market. We are very pleased with the progr
icant opportunities for future growth. Please turn to Slide 5.
Within Advanced Connectivity we see 5G as a multiyear growth opportunity for Rogers where market indications continue to point toward increased deployments in 2020. At a recent forum China Mobile increased their target for 5G coverage to 340 cities by the end of next year underscoring their expansion plans. This followed recent news from Chinese telecoms that advanced subscriptions for 5G service which is not yet available have already reached approximately 9 million. Third-party experts expect 2020 5G deployments to be in the range of 600000 base stations which at that scale would provide an opportunity for substantial growth in our 5G wireless infrastructure business next year. Low earth orbit or LEO is a significant emerging growth opportunity within Advanced Connectivity. Several companies are competing to deploy large constellations of satellites that would provide high-speed internet to underserved areas. Rogers is well-positioned to capitalize on this opportunity given our tremendous strength in the materials technologies needed to enable the complex antenna solutions that will be part of the receiver systems located on Earth. We are also encouraged by the progress of some companies in this sector to launch commercial services. For example in recent months one leading company announced plans for broadband internet coverage in targeted areas in 2020 with full global coverage by the end of 2021. Looking to advanced mobility we remain optimistic about the strong opportunities in EV and HEVs. A recent IHS market report projects that through 2025 sales of EVs and HEVs will increase at a compounded annual growth rate of approximately 30%. These expectations for ambitious growth are underpinned by the plans of leading automakers and reinforce that this is a growing sustainable market for Rogers' Power Electronics Solutions. One example is VW which recently unveiled the first model in its new all-electric brand that will be delivered to customers early next year. This is the first step in VW's plan to sell up to 3 million EVs and HEVs annually by 2025.
 Additionally, Daimler recently announced that they will discontinue all future development of internal combustion engines further signaling the shift in focus to electric vehicles. By 2022 Daimler is scheduled to bring 10 all-electric vehicles to market and plans to eventually electrify the entire Mercedes Benz portfolio. Rogers is also targeting EV charging infrastructure which is a related emerging growth opportunity for our Power Electronics Solutions. Please turn to Slide 6. ACS third quarter net sales were $79 million a decrease of 15% from the prior quarter and an increase of 10% versus the prior year. As discussed earlier this decline is primarily attributed to lower 4G and 5G sales. ADAS demand remained strong in Q3 and year-to-date sales have grown 8% compared to 2018. Aerospace and defense sales increased 17% versus Q2 and year-to-date results are up over 20% versus the prior year. This market segment is highly program-dependent and while we don't anticipate demand for these applications to grow at the same rate into the future we do expect stable and consistent high single-digit growth over time. As we look ahead we anticipate that 4G and 5G demand will continue to be soft through the end of the year. However we expect 5G demand to rebound in the first half of 2020 with the next wave of deployments. Turning to Slide 7 in Q3 EMS net sales were $95 million a slight increase compared to Q2. Seasonally strong portable electronics sales drove the sequential increase in revenue. A decline in demand for general industrial and EV/HEV battery applications partially offset the growth in portable electronics. Year-to-date sales of applications for EV/HEV battery pads and battery pack sealing systems have increased 29% versus the prior year highlighting the excellent growth opportunity in this area. The lower Q3 revenue is the result of the recent decline in the China EV market. We are very pleased with the progr