Welcome to the summary of a one group result for the second quarter and first half of the financial year 2025. We have delivered a solid performance as a result of our focus on staying relevant for customers, anticipating evolving consumer and technology trends and working together as one in one team.
In Austria, we are using our financial strength and flexibility to make strategic investments in securing and growing our subscriber base, even in the face of challenging macroeconomic and competitive environment. These proactive steps are part of our long term commitment to remain relevant to customers. While this approach has had an impact in our Q2 results, growth across our key CE markets remain strong and encouraging. On group level, we continue to show robust growth in both total revenues and service revenues.
As in previous periods, our results continue to benefit from sustained demand for high speed broadband, b to b digital services and TV products. In mobile, our customer base has expanded by more than 9%. In the fixed line business, TV customers are up by 8%, while broadband Internet customers have grown by 3%.
EBITDA has increased by 4% in the first half of twenty twenty five, driven by service revenue growth and our ongoing focus on operational efficiency improvements. In the second quarter, however, previously mentioned strategic investments had an impact on operational EBITA, which declined slightly by 1% during the period. In the first half of the year, we report robust cash flow generation with more than €333,000,000 with a strong growth year over year.
One of our key focus areas in the 2025 has been expanding our B2B digital services portfolio. Our aim is to further consolidate resources and expertise to accelerate growth in this area. As we move forward, we will stay focused on driving growth by continuously anticipating customer needs and challenging ourselves to stay ahead of market trends. Therefore, for 2025, we are reaffirming our guidance of 2% to three percent revenue growth, while CapEx, excluding spectrum, expected to reach around €800,000,000