{
  "id": "iphone13-black-screen",
  "modelId": "iphone13",
  "title": "Black screen: bounded startup check",
  "intent": "Record whether the iPhone reaches a logo, a low-battery screen or normal startup without recovery or erasure.",
  "category": "diagnostics",
  "sourceIds": [
    "iphone-restart",
    "iphone-charge",
    "iphone-safety"
  ],
  "prerequisites": [
    "Standard iPhone 13 confirmed",
    "No wet connector or damaged power equipment"
  ],
  "tools": [
    "Known compatible Lightning charging setup"
  ],
  "steps": [
    {
      "id": "state",
      "text": "Record the current screen state before pressing buttons: entirely blank, low battery, Apple logo or responsive screen. Use a normal restart if the phone responds.",
      "sourceIds": [
        "iphone-restart"
      ],
      "locator": "If screen is black; Face ID models"
    },
    {
      "id": "up",
      "text": "For a nonresponding iPhone 13, press and release Volume up quickly.",
      "sourceIds": [
        "iphone-restart"
      ],
      "locator": "Force a Face ID iPhone: step 1"
    },
    {
      "id": "down",
      "text": "Press and release Volume down quickly, then hold Side until the Apple logo appears. This is a sequence, not holding all three buttons together.",
      "sourceIds": [
        "iphone-restart"
      ],
      "locator": "Force a Face ID iPhone: steps 2–3"
    },
    {
      "id": "charge",
      "text": "If it does not turn on, use intact compatible charging equipment and charge for one hour before trying again. For a displayed low-battery icon, Apple instead directs hardware checks and 30 minutes of charging or until startup.",
      "sourceIds": [
        "iphone-restart"
      ],
      "locator": "After force restart: no power / low-charge battery"
    },
    {
      "id": "record",
      "text": "Record the furthest screen reached and whether startup completed. A stuck or repeating logo should be handed to Apple with the backup situation.",
      "sourceIds": [
        "iphone-restart"
      ],
      "locator": "If it still will not turn on"
    },
    {
      "id": "handoff",
      "text": "Stop at the observed startup result. This task does not enter recovery, restore firmware or erase the phone. Ask Apple how to preserve data if startup remains blocked.",
      "sourceIds": [
        "iphone-restart"
      ],
      "locator": "Contact Apple Support"
    }
  ],
  "checks": [
    {
      "id": "safety",
      "goal": "Check for a reason to stop before powered tests.",
      "question": "Is there swelling, lifted glass, casing separation, liquid damage, smoke, a burning smell, or damaged charging equipment?",
      "sourceIds": [
        "iphone-safety"
      ],
      "options": [
        {
          "id": "safe",
          "label": "No visible danger; safe to continue",
          "next": "equipment"
        },
        {
          "id": "danger",
          "label": "Yes, or suspected damage",
          "next": "stop"
        },
        {
          "id": "unknown",
          "label": "I cannot confirm safety",
          "next": "uncertain"
        }
      ]
    },
    {
      "id": "equipment",
      "question": "Is the connector dry and a known compatible power setup available?",
      "goal": "Make the startup check safe and interpretable.",
      "sourceIds": [
        "iphone-charge"
      ],
      "options": [
        {
          "id": "yes",
          "label": "Confirmed",
          "next": "startup"
        },
        {
          "id": "no",
          "label": "Not available / not completed",
          "next": "attention"
        },
        {
          "id": "unknown",
          "label": "Not checked / unsure",
          "next": "uncertain"
        }
      ]
    },
    {
      "id": "startup",
      "question": "What is the furthest screen reached?",
      "goal": "Distinguish a response from complete startup.",
      "sourceIds": [
        "iphone-restart"
      ],
      "options": [
        {
          "id": "started",
          "label": "Phone starts and is usable",
          "next": "ready"
        },
        {
          "id": "logo",
          "label": "Apple logo appears but startup does not finish",
          "next": "service"
        },
        {
          "id": "blank",
          "label": "Still blank after the applicable check",
          "next": "service"
        },
        {
          "id": "low",
          "label": "Low-battery screen; charging wait incomplete",
          "next": "attention"
        },
        {
          "id": "unknown",
          "label": "Button or charging check not completed",
          "next": "uncertain"
        }
      ]
    }
  ],
  "terminals": {
    "ready": {
      "type": "preparation_saved",
      "title": "Comparison recorded",
      "text": "Record the successful startup and arrange a backup. A single restart success does not explain a recurring shutdown.",
      "handoff": [
        "Initial and furthest visible screen states",
        "Which button sequence and applicable charging wait were completed",
        "Backup availability before recovery or storage-affecting work"
      ]
    },
    "attention": {
      "type": "maintenance_possible",
      "title": "Complete the missing preparation",
      "text": "Complete the charging wait that matches the screen observed before interpreting the result.",
      "handoff": [
        "Match the charging wait to blank-screen versus low-battery behavior.",
        "Initial and furthest visible screen states",
        "Which button sequence and applicable charging wait were completed",
        "Backup availability before recovery or storage-affecting work"
      ]
    },
    "service": {
      "type": "service_needed",
      "title": "Discuss the recorded result with support",
      "text": "Give Apple the exact startup state and charging interval. Raise inaccessible or unbacked-up data before any recovery proposal.",
      "handoff": [
        "Initial and furthest visible screen states",
        "Which button sequence and applicable charging wait were completed",
        "Backup availability before recovery or storage-affecting work"
      ]
    },
    "uncertain": {
      "type": "preparation_saved",
      "title": "Keep the unknowns in your handoff",
      "text": "The correct sequence or charging wait was not completed, so startup response remains unverified.",
      "handoff": [
        "Tell Apple whether buttons, a usable charger or elapsed charging time prevented the check.",
        "Initial and furthest visible screen states",
        "Which button sequence and applicable charging wait were completed",
        "Backup availability before recovery or storage-affecting work"
      ]
    },
    "stop": {
      "type": "service_needed",
      "title": "Stop powered checks",
      "text": "Stop using or charging damaged equipment. Do not open or press on the phone or handle hot or smoking equipment. Contact Apple or an authorized provider; use local emergency help for immediate fire danger.",
      "handoff": [
        "Report any physical damage or abnormal heat before further startup attempts.",
        "Initial and furthest visible screen states",
        "Which button sequence and applicable charging wait were completed",
        "Backup availability before recovery or storage-affecting work"
      ]
    }
  },
  "outcomeChecks": [
    "Record the successful startup and arrange a backup. A single restart success does not explain a recurring shutdown.",
    "Give Apple the exact startup state and charging interval. Raise inaccessible or unbacked-up data before any recovery proposal."
  ],
  "diagramId": "phone-iphone-restart",
  "workflow": {
    "family": "startup-diagnostics",
    "summary": "Follow the Face ID button sequence once and record the furthest startup state.",
    "fields": [
      {
        "id": "initial-screen",
        "label": "Initial screen",
        "type": "select",
        "options": [
          {
            "value": "unknown",
            "label": "Not checked / unknown"
          },
          {
            "value": "blank",
            "label": "Completely blank"
          },
          {
            "value": "battery",
            "label": "Low-battery graphic"
          },
          {
            "value": "logo",
            "label": "Apple logo"
          },
          {
            "value": "responsive",
            "label": "Screen responds"
          }
        ]
      },
      {
        "id": "sequence-status",
        "label": "Face ID sequence",
        "type": "select",
        "options": [
          {
            "value": "unknown",
            "label": "Not checked / unknown"
          },
          {
            "value": "completed",
            "label": "Volume up, Volume down, Side completed"
          },
          {
            "value": "button-blocked",
            "label": "A button cannot be operated"
          },
          {
            "value": "not-needed",
            "label": "Normal restart available"
          }
        ]
      },
      {
        "id": "charging-wait",
        "label": "Applicable charging wait",
        "type": "select",
        "options": [
          {
            "value": "unknown",
            "label": "Not checked / unknown"
          },
          {
            "value": "hour",
            "label": "One-hour blank-screen wait completed"
          },
          {
            "value": "half-hour",
            "label": "Low-battery 30-minute wait completed"
          },
          {
            "value": "started-early",
            "label": "Started before wait ended"
          },
          {
            "value": "incomplete",
            "label": "Wait incomplete"
          }
        ]
      },
      {
        "id": "furthest-screen",
        "label": "Furthest screen reached",
        "type": "select",
        "options": [
          {
            "value": "unknown",
            "label": "Not checked / unknown"
          },
          {
            "value": "usable",
            "label": "Usable lock/home screen"
          },
          {
            "value": "logo-only",
            "label": "Logo only or repeated logo"
          },
          {
            "value": "low",
            "label": "Low-battery graphic"
          },
          {
            "value": "blank",
            "label": "Still blank"
          }
        ]
      }
    ],
    "matrix": {
      "title": "Startup observations",
      "rows": [
        {
          "id": "sequence",
          "label": "After Face ID button sequence",
          "condition": "Correct order completed; no recovery procedure"
        },
        {
          "id": "charged",
          "label": "After applicable charging wait",
          "condition": "Known safe setup; wait matches initial screen"
        },
        {
          "id": "normal-use",
          "label": "After successful startup",
          "condition": "Only if phone becomes usable; ordinary navigation"
        }
      ],
      "results": [
        {
          "value": "not-tested",
          "label": "Not tested"
        },
        {
          "value": "works",
          "label": "Expected result"
        },
        {
          "value": "fails",
          "label": "Problem observed"
        },
        {
          "value": "intermittent",
          "label": "Intermittent"
        },
        {
          "value": "not-applicable",
          "label": "Not applicable"
        }
      ]
    },
    "reportFocus": [
      "Which startup stage is reachable",
      "Data accessibility before further service"
    ],
    "notDoneGuidance": [
      "Do not mark normal use as failed merely because the phone never started; leave it not tested.",
      "No recovery-mode or restore instruction is included."
    ],
    "osOptions": [
      "ios",
      "ios-unknown"
    ]
  },
  "entityKind": "task",
  "version": "2.0.0",
  "deviceFamily": "phone",
  "modelApplicability": {
    "id": "iphone13",
    "name": "iPhone 13",
    "family": "phone",
    "revision": "Standard iPhone 13 (2021), Lightning",
    "os": "iOS 15 or later; use the support page matching your installed iOS for service settings.",
    "region": "US-first service preparation; local service eligibility varies.",
    "help": "Open Settings → General → About. Read Model Name: it must say iPhone 13. Do not enter the serial number here.",
    "exclusions": [
      "iPhone 13 mini",
      "iPhone 13 Pro",
      "iPhone 13 Pro Max",
      "iPhone 15"
    ],
    "sourceIds": [
      "iphone-id",
      "iphone-spec",
      "iphone-service"
    ]
  },
  "exclusions": [
    "iPhone 13 mini",
    "iPhone 13 Pro",
    "iPhone 13 Pro Max",
    "iPhone 15"
  ],
  "materials": [
    "Keep any existing backup accessible to you.",
    "Keep credentials and personal files outside this record."
  ],
  "stopConditions": [
    "Stop using and charging equipment with swelling, casing separation, smoke, a burning smell or suspected battery damage. Do not open or press on it.",
    "Set damaged accessories aside. Do not open mains adapters or force connectors.",
    "Do not erase, reset, flash firmware or bypass a lock as a default diagnostic step."
  ],
  "branches": [
    {
      "from": "safety",
      "answer": "safe",
      "to": "equipment"
    },
    {
      "from": "safety",
      "answer": "danger",
      "to": "stop"
    },
    {
      "from": "safety",
      "answer": "unknown",
      "to": "uncertain"
    },
    {
      "from": "equipment",
      "answer": "yes",
      "to": "startup"
    },
    {
      "from": "equipment",
      "answer": "no",
      "to": "attention"
    },
    {
      "from": "equipment",
      "answer": "unknown",
      "to": "uncertain"
    },
    {
      "from": "startup",
      "answer": "started",
      "to": "ready"
    },
    {
      "from": "startup",
      "answer": "logo",
      "to": "service"
    },
    {
      "from": "startup",
      "answer": "blank",
      "to": "service"
    },
    {
      "from": "startup",
      "answer": "low",
      "to": "attention"
    },
    {
      "from": "startup",
      "answer": "unknown",
      "to": "uncertain"
    }
  ],
  "sources": [
    {
      "id": "iphone-restart",
      "title": "If your iPhone will not turn on or the screen is black",
      "url": "https://support.apple.com/en-us/116940",
      "locator": "Force your iPhone with Face ID to restart",
      "purpose": "iPhone 13 button sequence and black-screen charge intervals",
      "checkedAt": "2026-10-13",
      "reuse": "Reference only. Bounded original paraphrase and original schematics; no copied support images or pages.",
      "licenseStatus": "Public official support documentation; no redistribution license assumed.",
      "verifiedUnits": {
        "seconds": [
          10
        ],
        "minutes": [
          30
        ],
        "hours": [
          1
        ]
      }
    },
    {
      "id": "iphone-charge",
      "title": "If your iPhone will not charge",
      "url": "https://support.apple.com/en-ie/108805",
      "locator": "If your device will not charge, steps 1–8",
      "purpose": "External power checks and two 30-minute charging intervals",
      "checkedAt": "2026-10-13",
      "reuse": "Reference only. Bounded original paraphrase and original schematics; no copied support images or pages.",
      "licenseStatus": "Public official support documentation; no redistribution license assumed.",
      "verifiedUnits": {
        "minutes": [
          30
        ]
      }
    },
    {
      "id": "iphone-safety",
      "title": "Important safety information for iPhone",
      "url": "https://support.apple.com/guide/iphone/important-safety-information-iph301fc905/26/ios/26",
      "locator": "Handling; Repairing; Battery; Charging",
      "purpose": "Stop use for suspected damage and use trained battery service",
      "checkedAt": "2026-10-13",
      "reuse": "Reference only. Bounded original paraphrase and original schematics; no copied support images or pages.",
      "licenseStatus": "Public official support documentation; no redistribution license assumed."
    },
    {
      "id": "iphone-id",
      "title": "Identify your iPhone model",
      "url": "https://support.apple.com/en-ie/108044",
      "locator": "Find the model name / iPhone 13",
      "purpose": "Model confirmation",
      "checkedAt": "2026-10-04",
      "reuse": "Reference only. Original paraphrase; no copied images or manual pages.",
      "licenseStatus": "Public support document; no redistribution license assumed."
    },
    {
      "id": "iphone-spec",
      "title": "iPhone 13 technical specifications",
      "url": "https://support.apple.com/en-ie/111872",
      "locator": "External Buttons and Connectors; Power and Battery",
      "purpose": "Lightning, physical controls and wireless charging applicability",
      "checkedAt": "2026-10-13",
      "reuse": "Reference only. Bounded original paraphrase and original schematics; no copied support images or pages.",
      "licenseStatus": "Public official support documentation; no redistribution license assumed."
    },
    {
      "id": "iphone-service",
      "title": "Prepare iPhone for a service appointment",
      "url": "https://support.apple.com/en-us/109519",
      "locator": "Get ready; Bring in; Get back from service",
      "purpose": "Backup, OS-specific service readiness, credential privacy and returned-device data",
      "checkedAt": "2026-10-13",
      "reuse": "Reference only. Bounded original paraphrase and original schematics; no copied support images or pages.",
      "licenseStatus": "Public official support documentation; no redistribution license assumed."
    }
  ],
  "assets": [
    {
      "id": "phone-iphone-restart",
      "path": "/assets/phone-iphone-restart.svg",
      "title": "iPhone 13 force-restart sequence",
      "alt": "Three-step schematic: quickly press and release Volume up, quickly press and release Volume down, then hold Side until the Apple logo.",
      "sourceIds": [
        "iphone-restart"
      ],
      "caption": "Original schematic for an unresponsive iPhone 13. The buttons are used in sequence.",
      "kind": "Original schematic"
    }
  ],
  "relatedIds": [
    "iphone13-wired-charge",
    "iphone13-liquid-alert",
    "iphone13-touch-response"
  ],
  "estimatedDuration": {
    "minutes": 20,
    "label": "Planning estimate for recording observations; excludes charging, backups, drying and service. Not a measured repair time."
  }
}