Direct Answer
US wireless telecom is a three-player oligopoly (Verizon, AT&T, T-Mobile) with high capital intensity (spectrum licenses, network infrastructure) and stable recurring subscription revenue. Key metrics are ARPU (average revenue per user), postpaid net additions, churn rate, and EBITDA margins. 5G requires massive network investment with uncertain incremental revenue beyond service quality improvement.
Wireless Telecom Business Model: Subscriptions and Postpaid vs. Prepaid
US wireless revenue comes from two customer segments: postpaid (customers on credit-checked monthly plans, typically 89-91% ARPU premium, lowest churn) and prepaid (no credit check, pay-in-advance, lower ARPU, higher churn). Postpaid phone subscribers are the most valuable: typically employed adults with automatic payment, higher plan tiers, and device upgrade cycles that generate equipment revenue.
Carriers bundle wireless service with home internet (via fixed wireless access, cable TV, streaming services) to reduce churn, increase household wallet share, and compete with cable broadband. AT&T bundles DirecTV and HBO/Max content; Verizon has partnerships with Disney+ and Netflix. T-Mobile's TVision pivot and Starlink partnership reflect similar bundling strategy.
Device financing programs (0% or low-interest installment plans) replaced two-year contracts as the primary handset subsidy mechanism. Carriers collect equipment installment payments over 24-36 months while separately billing service. This improved income statement clarity (equipment revenue separated from service revenue) but created receivable risk and upgrade cycle management complexity.
Key Metrics: ARPU, Churn, and Postpaid Net Additions
ARPU (Average Revenue Per User): monthly revenue per subscriber, typically $50-55/month for postpaid phone in the US. Rising ARPU reflects premium plan adoption and add-ons (hotspot, international, device insurance); declining ARPU suggests competitive pressure or customer mix shift to lower-tier plans.
Churn: percentage of subscribers who leave per month. Postpaid phone churn at major US carriers is typically 0.7-1.1% monthly (8-13% annualized). Lower churn compounds into significantly higher lifetime value per subscriber. Elevated churn usually signals pricing or network satisfaction issues.
Postpaid net additions: gross adds minus gross churn, measuring organic subscriber growth. Sustained positive postpaid net adds while maintaining ARPU and low churn is the strongest signal of competitive health. The US wireless market is largely saturated for phone subscribers; growth comes from device category expansion (tablets, connected watches, fixed wireless) and competitive switching.
Service revenue: wireless revenue excluding equipment sales, now the preferred growth metric as device margins are minimal. Service revenue growth of 3-5% is considered healthy for a major US carrier.
5G Economics: Spectrum, Investment, and Return
5G deployment requires three spectrum bands with different characteristics. Low-band (below 1 GHz): wide coverage but limited speed improvement over 4G LTE. Mid-band (1-6 GHz, particularly 2.5 GHz and C-band): the primary 5G performance band, with good coverage range and significant speed improvements. Millimeter wave (mmWave) (above 24 GHz): very high speed and capacity but extremely limited range, practical only in dense urban and indoor venues.
T-Mobile acquired Sprint in 2020 primarily for Sprint's 2.5 GHz mid-band spectrum portfolio, giving it a substantial lead in mid-band 5G coverage (marketed as "Extended Range 5G"). AT&T and Verizon purchased C-band spectrum (3.7-3.98 GHz) in the 2021 FCC C-Band auction for a combined ~$70 billion.
The incremental revenue from 5G has been limited: consumer willingness to pay significantly more for 5G versus 4G LTE is low. 5G investment is largely defensive (maintaining network quality to retain subscribers) and positioning for enterprise applications (fixed wireless access, private 5G networks, IoT) that may generate new revenue over time.
Major Players: T-Mobile, Verizon, AT&T
T-Mobile (TMUS) has outperformed peers since its 2020 Sprint merger, growing postpaid phone subscribers faster than Verizon and AT&T through aggressive pricing, network investment, and customer satisfaction improvements. Its mid-band 5G coverage lead (2.5 GHz spectrum from Sprint) and uncarrier marketing have driven strong net additions.
Verizon (VZ) held the premium network reputation for years but has faced competitive pressure from T-Mobile's network improvements and AT&T's fiber buildout. Fixed wireless access (home broadband via 5G/4G LTE) has become a growth vector, adding over 1 million home internet customers per quarter at peak. Its high dividend yield (6-7%) attracts income investors.
AT&T (T) divested WarnerMedia to Warner Bros. Discovery in 2022, refocusing on telecom. Its FirstNet (first responder network) contract provides a stable government revenue base. AT&T Fiber (FTTH) is its broadband growth vehicle, expanding to 30+ million locations by 2025.
Investment Considerations: Capital Intensity and Dividend Sustainability
Wireless carriers are capital-intensive: combined capex of the three US carriers exceeds $40 billion annually for spectrum deployment, network densification, fiber backhaul, and fixed wireless infrastructure. Free cash flow after capex is the key metric for assessing dividend sustainability and debt reduction capacity.
Leverage is high across all three carriers following spectrum auctions and mergers. Debt reduction is a stated priority, particularly for AT&T (which divested assets and used proceeds to reduce leverage). Credit ratings directly affect cost of debt for companies that roll large maturities annually.
Fixed wireless access (FWA) has emerged as a competitive threat to cable broadband: carriers use spare network capacity to offer home internet at $25-50/month, challenging cable's broadband monopoly in many markets. Charter, Comcast, and Altice have responded by offering MVNO wireless service, creating a cable-telecom bundle war that competes on both services simultaneously.
FAQ
What is ARPU in wireless telecom?
ARPU (Average Revenue Per User) is monthly service revenue divided by average subscribers. For postpaid phone subscribers at US major carriers, ARPU typically runs $50-55/month. ARPU is the primary indicator of revenue quality: rising ARPU reflects premium plan adoption, add-ons (premium data tiers, device insurance, international plans, streaming bundles), and favorable customer mix. Declining ARPU suggests competitive pressure through promotional pricing or customer mix shift toward lower-tier plans.
Why did T-Mobile acquire Sprint?
T-Mobile acquired Sprint in 2020 primarily to obtain Sprint's 2.5 GHz mid-band spectrum portfolio, which covers hundreds of megahertz of contiguous mid-band spectrum in most major US markets. Mid-band is the primary 5G performance band: it balances coverage range with speed improvement in a way that low-band (wide coverage, minimal speed gain) and millimeter wave (fast but short range) cannot. The spectrum acquisition gave T-Mobile a substantial 5G network quality advantage over AT&T and Verizon, contributing to its post-merger subscriber growth outperformance.
What is fixed wireless access (FWA) and why is it growing?
Fixed wireless access (FWA) uses 5G or 4G LTE cellular connections to deliver home broadband service, replacing or competing with cable and DSL. Carriers install a router at the customer's home that connects to the cellular network; the customer gets home internet without a physical fiber or cable connection. FWA is growing because it uses spare network capacity (low marginal cost), does not require trench digging or fiber installation (fast deployment), and charges $25-50/month, well below cable broadband. T-Mobile and Verizon added several million FWA customers per year at peak.
How does wireless churn affect carrier valuations?
Churn rate directly determines subscriber lifetime value: a customer churning monthly at 0.7% has an expected tenure of ~142 months (about 12 years); at 1.1% churn, expected tenure falls to ~91 months. Since customer acquisition costs (marketing, device subsidies, dealer commissions) are high, longer tenure dramatically increases LTV. Investors watch churn closely as an indicator of competitive intensity and network/price satisfaction. Rising churn at any carrier typically signals competitive pressure and is associated with multiple contraction in the stock.