--- title: "Your Ethernet wall ports might already work, but your builder wired them for phones" url: https://daily.dev/posts/your-ethernet-wall-ports-might-already-work-but-your-builder-wired-them-for-phones-g3qebqyq2 source_url: https://www.xda-developers.com/ethernet-wall-ports-already-work-but-wired-for-phones type: article source: "XDA Developers" published: 2026-05-09T23:03:33.282Z updated: 2026-05-09T23:04:03.739Z reading_time: 5 upvotes: 0 comments: 0 language: en --- > ## Documentation Index > Fetch the complete documentation index at: https://daily.dev/llms.txt > Use this file to discover all available pages before exploring further. # Your Ethernet wall ports might already work, but your builder wired them for phones **[XDA Developers](https://daily.dev/sources/xda-developers)** · 5 min read · 0 upvotes · 0 comments ## Summary Pre-wired homes often hide a nasty surprise: Cat3 telephone cabling behind RJ11 wall plates instead of proper Ethernet. Cat3 is limited to 10Mbps, physically incompatible with RJ45 connectors, and cannot be fixed with adapters alone. The solution is replacing the old cabling with Cat6e, either DIY by using the old wire as a pull string (feasible for small runs) or by hiring a low-voltage professional for larger homes. Routing all new cables to a central patch panel is recommended for future-proofing. Homes with coaxial TV cabling have an alternative option via MoCA adapters. ## Full article daily.dev links to this article rather than hosting it. Read it at the original source: ## Similar posts on daily.dev - [Running Ethernet through my house taught me things no router upgrade ever could](https://daily.dev/posts/running-ethernet-through-my-house-taught-me-things-no-router-upgrade-ever-could-djv8hhpg9) · XDA Developers · 0 upvotes · 0 comments - [Your home network is only as fast as its slowest cable, and most people have at least one bad one](https://daily.dev/posts/your-home-network-is-only-as-fast-as-its-slowest-cable-and-most-people-have-at-least-one-bad-one-1hkl1tbg8) · XDA Developers · 0 upvotes · 0 comments - [3 myths about RJ45 Ethernet cables that I get tired of hearing](https://daily.dev/posts/3-myths-about-rj45-ethernet-cables-that-i-get-tired-of-hearing-uckvnhxzl) · XDA Developers · 0 upvotes · 0 comments --- [View this post on daily.dev](https://daily.dev/posts/your-ethernet-wall-ports-might-already-work-but-your-builder-wired-them-for-phones-g3qebqyq2)