Mike Sievert
President and Chief Executive Officer at T-Mobile US
Thanks, Jud. Welcome, everybody. As you can see if you're viewing online, I am here with a good cross section of our senior team once again coming to you today from Bellevue, Washington and looking forward to a great discussion.
But first, I'd like to take a moment to reflect on a historic year for T-Mobile and the exciting momentum that we bring into 2024. '23 was another year for T-Mobile of industry-leading growth in both customers and key financials, including all-time record results across many metrics. It was also a year where T-Mobile became established as the overall network leader, built on our extensive advantages in 5G and it was the year that we effectively completed the biggest and arguably the most successful telecommunications merger integration in the world, delivering synergies bigger and faster than even our own ambitious goals and doing it while also accelerating 5G investment in this country to the benefit of consumers and businesses.
Our remarkably consistent best value, best network strategy delivered industry-leading postpaid phone net additions of 3.1 million in 2023. This was driven by our highest postpaid phone gross adds in Company history, up 2% for the year and up 6% in Q4 and by our lowest postpaid phone churn in Company history for the year. Our net adds essentially matched our great results from '22, despite industry postpaid phone net adds decreasing year-over-year. You know what that means? It means that our unique formula enabled us to take a higher share of postpaid phone net adds than a year ago. In fact, '23 was our highest share of postpaid phone net adds since the merger, showing the ongoing durability of our differentiated strategy. And we finished the year on a high note with Q4 postpaid phone net adds up 934,000, highest in the industry by a wide margin. And we did it with rising ARPA, up almost 2%, delivering industry-leading growth in postpaid service revenue and core EBITDA in Q4, while also nearly doubling our adjusted free cash flow.
Let's talk about broadband. We added over 2.1 million customers in '23, our biggest growth year yet with more net new customers than the other largest providers combined as our product just continues to resonate in the market. And we finished strong with 541,000 nets in Q4, making us one of the largest ISPs in the nation with 4.8 million customers and counting at year-end. At T-Mobile our network is the key enabler of our growth, not only for the success that we've had to date, but also for the years to come. I predicted years ago that our well-established 5G leadership would eventually translate into overall network leadership and that was proven loud and clear in 2023 by leading third parties like Ookla and Opensignal time and again with T-Mobile sweeping every category of their test for overall network performance. Listen, it boils down to this. T-Mobile has the broadest and the deepest and the most advanced 5G network in the US today, and we have the assets and capabilities to further extend our network leadership in '24 and beyond. Okay, one final network point. We recently celebrated a pivotal moment in our groundbreaking alliance with SpaceX. By kicking off testing of direct satellite to cellular communications, our teams are really excited about what's coming.
Let me just remind you of one thing. Our network leadership still isn't yet fully recognized by millions of network seekers, who are still potential future customers for T-Mobile and yet that same network leadership is already driving our strong win share, particularly in underpenetrated areas like enterprise and government and also in smaller markets and rural areas in our consumer business. Let me just double click on that growth momentum. T-Mobile for Business delivered the highest postpaid phone net adds in Company history in 2023 and we exited the year with great momentum with Q4 being our highest quarterly net adds ever. Meanwhile, in our Consumer Group we continued to grow our share of households, both in smaller markets and rural areas, where we are well on our way to our 2025 targets and even in the top 100 markets where we grew our share year-over-year on the strength of our network and our compelling value proposition.
We are executing our balanced growth playbook with great and consistent success and the best part is we still have a lot of room to run. All of this added up to delivering the highest consolidated service revenue growth in the industry in '23. And it was an industry that continues to grow service revenues and cash flows, while simultaneously seeing customers win from healthy competition that delivers more value and better networks. On that all important postpaid service revenue metric, we delivered 6% growth in 2023, way above our next closest competitor. That growth led to core adjusted EBITDA growth of over 10% and free cash flow growth of nearly 80%. All of this enables our substantial stockholder return model, which has returned $17 billion to stockholders so far through the end of '23, including our first ever quarterly dividend in Q4.
Peter will share our guidance with you in a moment, but the short version is this. We see continued strong customer and revenue growth translating into rapid growth in cash flows in 2024 and beyond and supporting our ambitious plans for shareholder returns that we've already shared with you.
Before I wrap up, because this is a year-end report, I want to touch on some of the ways we're building a connected world where everyone can thrive. We believe reliable and affordable wireless and Internet service is a necessity for all in today's highly connected and digital world. And that's why we are so proud to have connected nearly 6 million students and provided $6.4 billion in products and services so far under our flagship initiative Project 10Million and our other education initiatives.
We've also partnered with Welcome.US to provide service through Metro by T-Mobile to refugees entering the US as part of a multi-year commitment of 200,000 lines. It is difficult to imagine restarting a new life in a new country without the connectivity that most of us take for granted. We are also working hard to create a more sustainable future. And we are proud to be the first US wireless provider to commit to achieving net zero emissions across our entire carbon footprint by 2040 using SBTi's net zero standard.
All right. Let me just wrap up with why I am so excited about what's ahead. We are now entering a period of tremendous value creation at T-Mobile driven by ongoing growth leadership and having -- and by having completed both a historic merger and a massive 5G network build that are foundational to unlocking the cash flow potential of this business. Our network is now a differentiated competitive advantage that complements our well-established value leadership. This unique and powerful formula means that our significant growth and value creation opportunities only continue to scale and they have lots of room to run. As we enter 2024 with momentum, I could not be more proud of this team and of our employees who remind us every day that it's better over here at T-Mobile.
All right, Peter, over to you to talk about our key financial highlights as well as our 2024 guidance.