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RCA: Android Incoming Calls Failed When App Killed

Problem Statement

Symptom: VoIP calls missed or delayed 20-30s when app is force-killed and phone is locked Severity: P0 - Core functionality broken Environment: Android 12+, React Native + Expo, FCM + CallKeep

System Context

Neon Mobile: Incoming Call Flow (Phone Locked, App Killed)

Overview

This document describes what happens when a call arrives while the Android app is killed and the phone is locked.

Flow Diagram

sequenceDiagram
    participant Backend

ST. LUCIA TRIP - NOV 27 - DEC 1, 2025

HOTEL

The Landings Resort & Spa - Rodney Bay

🔗 Website
🔗 TripAdvisor Reviews
🔗 Photo Gallery
Modern beachfront all-suite resort
25% discount for Nov 27-30 dates
~$340-415/night (1-bedroom suite after discount)

Eating

Godaime Hanayama Udon Ginza
- https://maps.app.goo.gl/bCwtE4HYVNtPsAYp9?g_st=iw
Tempura Abe Honten
- Good tempura spot for lunch
- https://maps.app.goo.gl/jge9oB6EMmNUub8C6?g_st=iw
Kagurazaka Saryo
- Go here for dessert - their parfait! Also for views

🕌 Marrakesh Trip Itinerary

📅 Tuesday, Dec 24

Arrival: 3:40 PM ✈️ (Air France AF 1276)
Airport Transfer: Confirmed with El Fenn.
- Driver Pickup: Look for a red sign saying "El Fenn" at the main exit.
- Fast Track Service: Premium Fast Track confirmed. An agent will meet you at the gate with an iPad showing your name and escort you through immigration.
Hotel: El Fenn 🏨
Reservation: Medium Room

KLWP Formulas

Random image from folder

$tu(rndimg, 15, "/storage/B84B-2BF0/images")$

Picture entity

Christmas tree

  - entity: switch.smart_socket_5_socket_1
    image: https://cdn-icons-png.flaticon.com/128/3726/3726221.png
    state_filter:
      'off': grayscale(100%)
 'on': grayscale(0%)

TMUX CHEAT SHEET:

sessions: tmux ls (Re)attach: tmux a

All commands start with `ctrl + b`

Action	Cmd
Split Horizontal	`shift + "`

	alias: Scene Switch
	description: Handle all automations related to scene switch
	trigger:
	- platform: event
	id: btn_1_press
	event_type: zha_event
	event_data:
	device_id: 65ac534f2e5b9f40cfff355a30b814df
	endpoint_id: 1
	cluster_id: 6


	const http = require('http');
	const URL = require('url');
	const { execSync } = require('child_process');

	const port = 3000;

	const server = http.createServer((req, res) => {
	res.statusCode = 200;
	res.setHeader('Content-Type', 'application/json');