AT&T 2Q26 capex exceeded expectations, while the iPhone contribution was broadly in line with market expectations

Overview

This report uses AT&T's 2Q26 handset sales, upgrade rate, and capex data to assess the read-through for related stocks covered by Barclays. The core conclusion is that AT&T's quarterly capex exceeded market expectations, but full-year capital investment guidance was not raised, resulting in a broadly neutral impact on the service-provider capex chain; iPhone-related metrics were broadly in line with expectations, but the continued decline in the upgrade rate suggests that volume momentum in the iPhone cycle still warrants monitoring.

Core views

Barclays estimates that AT&T accounts for 11% of CIEN's revenue, low-single-digit percentage of GLW's total revenue, high-single-digit percentage of GLW's optical communications revenue, and approximately 6% of iPhone unit sales. AT&T's 2Q26 smartphone sales were 5.2M units, flat year over year, while iPhone sales were approximately 3.4M units, also flat year over year and down low-single digits sequentially. This indicates some momentum in the iPhone 17 cycle, offset by the typically weaker seasonality of the second quarter. Capex was $5.7Bn in 2Q26, above the Street expectation of $5.5Bn, but the 2026 full-year capital investment guidance of $23-24Bn remained unchanged, with investment more back-end loaded. Barclays believes North American carrier activity is normalizing. GLW may be more volatile due to the pace of telecom fiber expansion, while optical capacity-enhancement spending is likely to remain prioritized, and CIEN's business with large U.S. telecom customers could accelerate next year.

Analysis framework

The report applies a customer-earnings read-through approach, linking AT&T's disclosed handset sales, upgrade rate, estimated iPhone sales, and capex to the revenue exposures of AAPL and communications equipment/optical communications supply-chain companies. It assesses the marginal changes in quarterly data relative to market expectations and full-year guidance. The focus is not on revaluing AT&T itself, but on evaluating the demand signals from AT&T's data for AAPL, CIEN, GLW, and CSCO.

Methodology notes

• earnings read-throughCarrier capex and handset sales read-through

  Use AT&T's capex and handset upgrade data to infer demand for supply-chain companies and related stocks.

  AT&T is a large North American telecom operator, and the pace of its capital investment can affect optical communications, network equipment, and service-provider capex-related companies. Its iPhone sales contribution can also serve as a reference for AAPL's U.S. carrier-channel demand.

• relative rating systemBarclays Fundamental Equity Research Rating System

  Overweight, Equal Weight, and Underweight are 12-month expected-return ratings relative to the covered industry universe.

  The report discloses ratings of Equal Weight / Neutral for AT&T, Underweight / Neutral for AAPL, Overweight / Neutral for CIEN, and Equal Weight / Neutral for CSCO and GLW.

Asset mapping & comparison

Structured mapping from thesis to named assets (strengths, weaknesses, peers, risks).

• AT&T INC (T.US)

  Core source of the report's data and primary covered company

  Strengths

  2Q26 capex exceeded the Street expectation, smartphone sales were flat year over year, and the full-year capital investment plan remained at a relatively high level.

  Weaknesses

  The upgrade rate declined from 3.5% to 3.2%, indicating continued slowing in upgrade momentum; unchanged full-year capital investment guidance limits the spillover impact of the quarterly beat.

  Comparison

  Compared with the Street expectation, 2Q26 capex was higher; compared with the previous quarter, the upgrade rate declined.

  Risks

  If the upgrade rate continues to decline or second-half capex execution falls short of the back-end-loaded expectation, the read-through for handset demand and the equipment chain would weaken.

• Apple, Inc. (AAPL)

  Channel read-through from AT&T handset sales data to AAPL iPhone sales

  Strengths

  Barclays estimates that AT&T sold approximately 3.4M iPhones during the quarter, flat year over year and broadly in line with the Street expectation, with some support from momentum in the iPhone 17 product line.

  Weaknesses

  The declining upgrade rate weakens evidence of the sustainability of the replacement cycle; Barclays remains cautious about the sustainability of iPhone growth, other hardware categories, and services growth.

  Comparison

  AT&T contributes approximately 6% of iPhone unit sales; the quarterly read-through was broadly in line with expectations rather than significantly above them.

  Risks

  If iPhone sales fall below expectations, services fail to benefit from the installed hardware base, or the App Store and TAC regulatory environment deteriorates, AAPL's valuation and earnings expectations could come under pressure.

• Ciena Corporation (CIEN)

  Beneficiary of service-provider capex and optical network capacity-enhancement spending

  Strengths

  AT&T accounts for approximately 11% of revenue; Barclays expects optical capacity-enhancement spending to be prioritized, and CIEN's business with large U.S. telecom customers could accelerate next year.

  Weaknesses

  AT&T's unchanged full-year capital investment guidance limits the positive impact of the quarterly capex beat.

  Comparison

  Relative to GLW and CSCO, CIEN is more directly linked in the report to accelerating optical spending by major U.S. telecom customers.

  Risks

  If North American carrier capex recovery slows or capacity-enhancement projects are delayed, CIEN's order and revenue acceleration may fall short of expectations.

• Corning Incorporated (GLW)

  Exposure to AT&T fiber expansion and optical communications revenue

  Strengths

  AT&T contributes a low-single-digit percentage of GLW's total revenue and a high-single-digit percentage of its optical communications revenue; fiber expansion remains a source of demand.

  Weaknesses

  Telecom fiber expansion is described as lumpy, and the pace of demand may be unstable.

  Comparison

  Compared with CIEN, GLW's read-through is more affected by fluctuations in the pace of fiber expansion, and the report's overall assessment is neutral.

  Risks

  If carrier fiber expansion is delayed or back-end-loaded capex fails to materialize, GLW's optical communications-related revenue could come under pressure.

• Cisco Systems, Inc. (CSCO)

  Covered company with exposure to service-provider capex

  Strengths

  AT&T's quarterly capex exceeded expectations, providing a demand signal for the service-provider capex chain.

  Weaknesses

  Full-year capital investment guidance remained unchanged, with no clear incremental upward revision.

  Comparison

  Like CIEN and GLW, CSCO is among the service-provider capex-exposed stocks mentioned in the report, but the report does not identify a stronger company-specific positive read-through for CSCO.

  Risks

  If carrier capex normalization is slower than expected, improvement in demand for CSCO-related service providers may be limited.

Key data

• AT&T 2Q26 capex$5.7BnAbove the Street expectation of $5.5Bn.
• AT&T 2026 full-year capital investment guidance$23-24BnThe company maintained its full-year guidance, with capital investment more back-end loaded.
• AT&T 2Q26 smartphone sales5.2M unitsFlat year over year.
• AT&T upgrade rate3.2%3.5% in the previous quarter, down 10bps year over year and 30bps sequentially.
• Barclays estimate of AT&T 2Q26 iPhone salesapproximately 3.4M unitsFlat year over year and down low-single digits sequentially, broadly in line with the Street expectation.
• AT&T revenue exposure for CIENapproximately 11%Used to assess the capex read-through for service providers.
• AT&T revenue exposure for GLWlow-single-digit percentage of total revenue; high-single-digit percentage of optical communications revenueThe pace of fiber expansion could make GLW-related demand volatile.
• AT&T contribution to iPhone unit salesapproximately 6%Used to assess the AAPL carrier-channel read-through.
• AAPL rating and target priceUnderweight, target price $253Barclays described the iPhone 17 cycle as strong but remains cautious about its sustainability, other hardware categories, and services growth.
• AT&T rating and closing priceEqual Weight / Neutral; USD22.26The price date is 21-Jul-2026.

Impact & implications

For AAPL, AT&T's iPhone sales contribution was broadly in line with expectations, supporting continued momentum in the iPhone 17 cycle, but the continued decline in the upgrade rate limits the positive interpretation. For CIEN, GLW, and CSCO, AT&T's quarterly capex beat provides a near-term demand signal, but unchanged full-year guidance keeps the overall assessment neutral. Structurally, North American carrier capex is normalizing, while fiber expansion may proceed unevenly; the view that optical spending for capacity enhancement will be prioritized is more favorable to CIEN's relative investment thesis.

Risks

• A continued decline in AT&T's upgrade rate could indicate slower upgrade demand following a moderation in carrier subsidy intensity.
• AT&T's unchanged full-year capital investment guidance means that quarterly capex above expectations may reflect timing differences rather than an improvement in total spending.
• The pace of fiber expansion by North American telecom operators may be volatile, affecting revenue visibility for related supply-chain companies such as GLW.
• Although the iPhone 17 cycle has momentum, Barclays remains cautious about its sustainability, other hardware categories, and services growth.
• The report discloses market-making, investment-banking, or other financial-services relationships between Barclays and several covered companies; investors should consider potential conflicts of interest.

What to watch

• Whether AT&T's second-half capital investment is deployed as back-end loaded under the guidance, and whether the full-year $23-24Bn range is maintained.
• Changes in AT&T's and other U.S. carriers' upgrade rates in subsequent quarters, particularly replacement-cycle elasticity after subsidy intensity moderates.
• The sustainability of the iPhone 17 cycle in carrier channels, and whether higher ASPs can offset limited unit-volume growth.
• The actual spending pace of fiber-expansion and capacity-enhancement projects by North American carriers.
• Whether CIEN's orders and revenue from large U.S. telecom customers accelerate next year as Barclays expects.