AT&T is actively moving to phase out its traditional copper-based landline service (Plain Old Telephone Service or POTS) across the country, including in Illinois, the full shutdown is a multi-year process that extends beyond 2026.
In short, 2026 is a transition year where new orders are already closed and the final shut-off notice for existing customers is approaching, but the actual end date for existing landlines is in 2027 or later, pending regulatory approval and alternative availability.
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Discontinuation Date: Letters sent to existing AT&T traditional landline customers in Illinois indicate their service will be discontinued “on or after March 15, 2027.”
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New Service/Changes: As of October 15, 2025, AT&T has stopped accepting new orders or modifications for traditional copper landline service in affected areas, including Illinois. This means current customers who move will not be able to get traditional landline service at their new location.
Here are the key points regarding AT&T landlines in Illinois:
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Ultimate Goal and Timeline: AT&T’s overarching plan is to retire the vast majority of its copper network by the end of 2029 nationwide. The transition is happening in phases, with a goal to have “no customers using copper” in certain areas by the end of 2027.
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2026 Milestones:
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June 2026 is a critical date when AT&T is set to begin decommissioning copper facilities in approximately 500 wire centers across the country, representing about 10% of its footprint. It’s likely that some Illinois locations could be included in this initial shutdown.
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Official Discontinuation Notice: Some customers in Illinois have received letters announcing that their traditional landline service will be discontinued “on or after March 15, 2027.”
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The Transition: AT&T is replacing the copper lines with modern alternatives, such as fiber-optic technology or a wireless solution called AT&T Phone – Advanced (which uses the cellular network).
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Consumer Protections: AT&T has received approval from state and federal officials to end its status as a “Carrier of Last Resort” in Illinois. However, the Illinois Commerce Commission (ICC) still has a role. If you receive a discontinuation notice and believe you do not have alternative, reliable telephone service (especially for 911 access, home security, or medical monitoring), you can notify the ICC. They can require AT&T to continue providing reliable service if no viable alternative is available in your area.
In summary, while the full end of landline service is not strictly limited to 2026, the year is part of an accelerated phase-out process, and some customers may see their service discontinued that year or shortly after.
If you are an AT&T landline customer in Illinois, your best step is to check any recent correspondence from AT&T for a specific date that applies to your service and location.
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