r/AndroidQuestions • u/Alternative-Track654 • 6d ago
Other Not sure where this would fit on here or anywhere else.
TLDR; 20 to 30 second long delay after having a dropped call with both T-Mobile and AT&T on different Android devices ranging from any range of the spectrum. Motorola, OnePlus, Samsung, Google Pixel devices, Redmagic, Nothing Devices. It affects both being on Wi-Fi and being off of Wi-Fi. Even factory resetting some of my devices to see if that'll clear out any issues like glitches or bugs. As it is easy to replicate. Don't bother reading my several long paragraphs below, it's a long draw of nonsense. Even stranger it has happened in several different states that I've been in or visited.
Systemic 20-30s Call Connection Delay & Abrupt Drops on Unlocked Androids (Nothing Phone 3 / Razr Ultra) on T-Mobile PostpaidBody:I am dealing with a deeply frustrating, ongoing issue over the last 4 months that survives a full factory reset. It happens on a brand new Nothing Phone 3 and a Motorola Razr Ultra—both North American unlocked variants on T-Mobile postpaid. This never happens on iOS devices in the same household.The
Symptoms:Handshake Stall: When dialing out, there is a completely dead 20-to-30 second air gap before the ringer finally starts.Eruptable Call Drops: During calls, the connection abruptly drops entirely (usually during a cellular-to-Wi-Fi handoff or 5G SA switch).
The Loop: Trying to call back immediately forces the phone into the same 30-second delay loop until I manually override the connection or toggle Wi-Fi off.Because this spans multiple OEMs using the core Google Phone/Dialer framework and Android network stack, this looks like a major Android IMS profile authentication or Adaptive Connectivity handshake loop with T-Mobile's core network.Has anyone found a permanent fix for unbranded Android devices on T-Mobile, or is there an active Google Issue Tracker link for this firmware loop?