The first sign is a silent inbox: you receive alerts in the Xbox app, but the message itself never lands. This lag is usually caused by a mismatch between app permissions and the mobile operating system. When the system blocks background data, the server can’t push the text in time.
Another tell‑tale symptom is a stuttered thread: you reply, but the opponent sees a loading indicator for an entire minute. This happens when the device’s Wi‑Fi or cellular connection is unstable, or when Xbox’s background sync is disabled by battery‑saving mode.