You dishy is probably not aligned correctly. You’re leaving performance on the table.
Starlink Gen 3/4 Dishy Alignment Reporting: Why Your App Is Lying to You (And Where to Find the Truth)
If you’ve recently installed a Starlink Gen 3 Standard dish and have been obsessing over getting a perfect alignment, you may have run into a confusing contradiction: the Starlink app’s alignment tool is insisting your dish is off by roughly 6 degrees and needs to be realigned, while navigating directly to 192.168.100.1 in your browser and checking the raw telemetry shows both your rotation (azimuth) and tilt angles sitting comfortably below 1 degree of deviation. So which one is right?
The answer is unambiguous: the 192.168.100.1 telemetry is correct. The app’s alignment tool is not. This post will walk you through exactly why these two data sources disagree, which one you should trust, and why Starlink’s own app can mislead users who are trying to do a precise installation.
What Each Data Source Is Actually Measuring
Before diving into why they differ, it’s important to understand what each interface is actually doing under the hood, because they are measuring your dish’s orientation in fundamentally different ways.
The Starlink App Alignment Tool
The alignment tool built into the Starlink app is designed to be accessible and simple for the average user during initial setup. When you open the alignment tool, it presents a real-time graphical indicator showing how far off your dish is from the target direction, triggering a “Starlink Misaligned” warning if the deviation exceeds roughly 5 degrees.
However — and this is the critical detail most users miss — the app’s alignment tool is not reading data directly from the dish itself. Instead, it relies heavily on the sensors inside your smartphone. Your phone’s accelerometer, gyroscope, and magnetometer are used to determine orientation. The app is essentially trying to infer the dish’s position based on how you are holding your phone relative to the dish and how the phone is oriented in space at that moment.
This is a convenience-first design choice. It allows anyone to do a rough alignment without needing to connect to the dish’s internal systems. But it comes with real-world limitations: phone sensors vary in quality and calibration between models, the physical angle at which you hold your phone while standing next to a rooftop-mounted dish introduces parallax-style error, magnetic interference from nearby metal structures throws off compass readings, and any slight movement of your hand during the reading skews the output. When you stack all of these variables together, a reported 5–6 degree error on the app side when the dish is actually within 1 degree of perfect is not unusual at all. It is, in fact, an expected consequence of how that measurement pathway works.
The 192.168.100.1 Telemetry Interface
Navigating directly to 192.168.100.1 in your web browser while connected to your Starlink network gives you access to the dish’s local web interface, which exposes real-time telemetry pulled directly from the dish’s onboard hardware via its internal gRPC API. Among the data fields you’ll find there are the dish’s actual measured tilt angle and rotation (azimuth) angle — not approximations derived from your phone, but readings from the inertial measurement unit (IMU) physically built into the dish itself.
The Gen 3/4 dishy contains a multi-axis IMU — encompassing accelerometers, gyroscopes, and magnetometers — mounted directly inside the hardware. This sensor suite is the same system the dish’s firmware uses internally to aim its phased array antenna, steer electronically toward satellites, and compensate for any physical movement or vibration. When the dish reports a tilt deviation of less than 1 degree and a rotation deviation of less than 1 degree through that telemetry interface, it is telling you exactly what its own brain knows about its physical orientation. There is no phone in the middle. There is no human holding anything at an angle. It is a direct readout from the source.
This is the ground truth. This is what matters.
Why Does the App Overreport the Error?
Let’s be specific about the mechanisms at play, because it helps demystify something that can cause real frustration during installation.
1. Phone Sensor Drift and Calibration Variance Every smartphone’s accelerometer and gyroscope has some degree of inherent drift and manufacturing variance. Unless you calibrate your phone’s sensors immediately before using the alignment tool — which no average user does — you may already be starting with a sensor baseline that’s 2–4 degrees off from true level. This offset gets baked directly into the alignment reading.
2. The Human-in-the-Loop Problem The alignment tool requires you to physically orient your phone in a specific way relative to the dish. Even if you are trying to hold it perfectly flush, the angle at which you place your phone against the dish, the position of your body relative to the antenna face, and the mechanical imprecision of pressing a phone against a curved surface all introduce error. A deviation of just a few millimeters in placement can translate to multiple degrees of reported angular error.
3. Magnetic Interference If your dish is mounted on a roof with steel flashing, near HVAC equipment, adjacent to a metal chimney cap, or anywhere near ferrous material, the magnetometer in your phone will produce inaccurate compass readings. The alignment tool uses compass data to determine azimuth (rotational direction). Interference of even a moderate level can swing the reported rotation angle by several degrees in either direction.
4. The App’s Threshold Logic Is Coarse The app’s alignment warning system is designed with a 5-degree threshold. Per Starlink’s own documentation, the “Starlink Misaligned” alert fires when the reported deviation exceeds approximately 5 degrees. This is a deliberate design choice aimed at simplicity — but it also means the app is not architected for precision. It’s a binary “good enough / not good enough” tool, not a fine-grained diagnostic instrument. When a 6-degree reading is actually sub-1-degree in reality, you are looking at a combination of all the sensor-chain errors described above, amplified through a system that was never designed to compete with the dish’s own hardware sensors.
5. The App Is Not in a Feedback Loop With the Dish Critically, the Starlink app’s alignment tool does not cross-reference its phone-derived readings with what the dish’s IMU is actually reporting. It does not ask the dish “what do you think your tilt is?” and compare notes. It operates independently, using the phone as its sole measurement source. The 192.168.100.1 interface, by contrast, is a direct window into the dish’s own self-knowledge.
What the Telemetry at 192.168.100.1 Is Actually Showing You
When you access 192.168.100.1 and look at the alignment or telemetry section, the tilt angle and azimuth (rotation) values you see are reported by the dish’s internal IMU. The dish firmware uses these exact numbers to electronically steer its phased array toward the satellite constellation overhead. If the dish’s own system believes it is within 1 degree on both axes, it is operating with the alignment data it actually needs, and it is doing so accurately.
In other words: the dish is not confused. It knows where it is pointing. It has sub-degree resolution on its own orientation. It is actively using that data to maintain your internet connection right now. When you have excellent signal, low latency, and stable speeds — which you likely do, given your telemetry readings — that is the real-world validation that the dish’s internal measurement is correct.
The app, meanwhile, is waving a warning flag based on a phone sensor chain that is demonstrably producing a false reading.
The Bottom Line: Which Should You Trust?
Trust the 192.168.100.1 telemetry. Every time.
The dish’s onboard IMU is a precisely calibrated sensor system whose entire purpose is to know exactly how the dish is oriented. It is not subject to human error in positioning, it is not affected by how you hold your phone, it does not drift because you haven’t recalibrated a consumer-grade smartphone accelerometer recently, and it is not confused by magnetic interference from the environment around your installation. The data it reports at the local web interface is the same data the dish uses to run itself.
The app’s alignment tool is a useful rough-guidance system for initial setup — it is designed to get a new user into the ballpark during installation, not to serve as a precision verification instrument after the fact. When it disagrees with the dish’s own hardware sensors by 5–6 degrees, the app is wrong.
If your 192.168.100.1 telemetry shows both tilt and rotation angles under 1 degree, your dish is aligned. Your connection will confirm it. Put the phone down.
A Note for Advanced Users
If you want to dig deeper into your dish’s self-reported alignment data programmatically, the Starlink dish exposes its data through a local gRPC API on port 9200 at the 192.168.100.1 address. Third-party tools and community-developed utilities have long used this API to build dashboards, monitor uptime, track alignment drift over time, and pull more granular telemetry than the app surfaces. If you are doing a permanent installation and want to log alignment stability over days or weeks to confirm your mount hasn’t shifted, the gRPC interface is where you want to be — not the app’s alignment tool, which is fundamentally an installation aid, not a long-term monitoring solution.
Your dish’s internal sensors are the authority on where your dish is pointing. The data they produce at 192.168.100.1 is the truth. The app alignment tool is, at best, a helpful starting-point approximation — and at worst, a source of unnecessary anxiety for users who are, in fact, perfectly aligned.
