Good morning, ladies and gentlemen. At this time, we would like to welcome everyone to Positivo Tecnologia's second quarter 2019 earnings conference call. Today, we have with us Paulo Eduardo Junqueira, Vice President of Finance and Investor Relations. We would like to inform you that this call is being recorded, and you will be in a listen-only mode during the company's presentation. After Positivo Tecnologia's remarks are completed, there will be a question- and- answer session.
At that time, further instructions will be given. If any participant needs assistance during this call, please press star zero to reach the operator. We have simultaneous webcasts that may be accessed through the company's website, ri.positivotecnologia.com.br, and MZiQ platform. The slide presentation may be downloaded from this website. Please feel free to flip through the slides during the conference call.
Before proceeding, let me mention that the forward-looking statements are being made under the Safe Harbor of Private Securities Litigation Reform Act of 1996. Forward-looking statements are based on the beliefs and assumptions of Positivo Tecnologia's management and on information currently available to the company. They involve risks, uncertainties, and assumptions because they relate to the future events and therefore depend on circumstances that may or may not occur in the future.
Investors should understand that general economic conditions, industry conditions, and other operating factors could affect the future results of Positivo Tecnologia and could cause results to differ materially from those expressed in such forward-looking statements. Now I'll turn the call over to Mr. Paulo Eduardo Junqueira, Positivo Tecnologia's Vice President of Finance and Investor Relations. Mr. Paulo, you may begin your conference.
Thank you. Good morning, everyone. It's a pleasure to be here and to start this conference about the second quarter of Positivo results. The PC market in Brazil increased 2% in the second quarter, according to IDC. PC sales in Brazil grew in the retail and corporate markets following a recovery for corporate IT investments renewal. Positivo sales decreased a little, affected mostly by the company's policy for minimum margins and shortage of inventory supply by a major worldwide processor manufacturer, which is well-known in the market.
Our invested company, Accept, presented very good sales performance with an increase of 24% in the second quarter. Moving to the next slide. Mobile phones market grew 7.6% in the second quarter, and we increased share. Positivo sales had a good performance, mainly in smartphones. Following the market growth, the company's mobile phone sales had good performance, recording a volume of 485,000 units in the second quarter, 24.3% growth in market share.
Moving to the next slide. In the second quarter, sales margin reached 11.7%, higher than previous periods due to a favorable product mix and also due to the already mentioned policy on Minimum Margins established by the company in the end of 2018. Also, the company had maintained a strong cost control, which is down 12.9% in the quarter. Moving to the next slide. Two weeks ago, we have launched a new product line. We entered the IoT market. We launched the Positivo Casa Inteligente brand. We were the first mover on providing a friendly integrated solution.
We offer goods and solutions to connect Brazilian homes with affordable prices. On the next slide. We have also intensified our efforts to attend one market demand, mostly the corporate market demand, for providing our computers on a leasing mode instead of sales. We have intensified our efforts and intensified our sales in this leasing market. On the next slide. As mentioned, Accept, our invested company, holds 80% stake.
We hold an 80% stake in Accept, and it had a very good performance in second quarter. Also, the company expects to make new investments in technology-based companies using part of our investments in research and development obligation. Moving to the financial results on slide number nine. We noticed that, as mentioned, PC sales had a reduction in second quarter, and mobile phones had a very good performance, mostly on smartphones, with the highlights of a 49.4% growth in smartphones.
On slide number 10, net revenue grew in the retail market, mainly due to the mobile phone sales, as government sales had a slight decrease and the corporate sales grew 28% in second quarter 2019. Moving to slide number 11. The company recorded a 28% growth margin in the quarter, a 5% increase in margin compared to second quarter of last year.
Mostly, as mentioned already, as a result of the Minimum Margin Policy and the fixed cost remained with the strong control in second quarter. Moving to the next slide. The company had a good performance. We posted an 8.1% EBITDA margin and delivering a BRL 50 million EBITDA. We had a net income of BRL 11.1 million. And the net debt multiple decreased to 1.7%. That's it. Thank you very much.
Thank you. The floor is now open for questions. If you have a question, please press star, then one on your touch-tone phone at this time or any time. If at any point your question is answered, you may remove yourself from the queue by pressing star two. Questions will be taken in the order they are received. We do ask that when you pose your question, that you pick up your handset to provide optimum sound quality. If you are connected in the webcast, click on question button. Please hold while we poll for questions. Thank you. This concludes our question- and answer session. This concludes today's Positivo Tecnologia earnings conference call.