name	energy-ref
description	Complete energy optimization API reference - Power Profiler workflows, timer/network/location/background APIs, iOS 26 BGContinuedProcessingTask, MetricKit monitoring, with all WWDC code examples
skill_type	reference
version	1.0.0

Energy Optimization Reference

Complete API reference for iOS energy optimization, with code examples from WWDC sessions and Apple documentation.

Related skills: energy (decision trees, patterns), energy-diag (troubleshooting)

Part 1: Power Profiler Workflow

Recording a Trace with Instruments

Tethered Recording (Connected to Mac)

1. Connect iPhone wirelessly to Xcode
   - Xcode → Window → Devices and Simulators
   - Enable "Connect via network" for your device

2. Profile your app
   - Xcode → Product → Profile (Cmd+I)
   - Select Blank template
   - Click "+" → Add "Power Profiler"
   - Optionally add "CPU Profiler" for correlation

3. Record
   - Select your app from target dropdown
   - Click Record (red button)
   - Use app normally for 2-3 minutes
   - Click Stop

4. Analyze
   - Expand Power Profiler track
   - Examine per-app lanes: CPU, GPU, Display, Network

Important: Use wireless debugging. When device is charging via cable, system power usage shows 0.

On-Device Recording (Without Mac)

From WWDC25-226: Capture traces in real-world conditions.

1. Enable Developer Mode
   Settings → Privacy & Security → Developer Mode → Enable

2. Enable Performance Trace
   Settings → Developer → Performance Trace → Enable
   Set tracing mode to "Power Profiler"
   Toggle ON your app in the app list

3. Add Control Center shortcut
   Control Center → Tap "+" → Add a Control → Performance Trace

4. Record
   Swipe down → Tap Performance Trace icon → Start
   Use app (can record up to 10 hours)
   Tap Performance Trace icon → Stop

5. Share trace
   Settings → Developer → Performance Trace
   Tap Share button next to trace file
   AirDrop to Mac or email to developer

Interpreting Power Profiler Metrics

Lane	Meaning	What High Values Indicate
System Power	Overall battery drain rate	General energy consumption
CPU Power Impact	Processor activity score	Computation, timers, parsing
GPU Power Impact	Graphics rendering score	Animations, blur, Metal
Display Power Impact	Screen power usage	Brightness, content type
Network Power Impact	Radio activity score	Requests, downloads, polling

Key insight: Values are scores for comparison, not absolute measurements. Compare before/after traces on the same device.

Comparing Before/After (Example from WWDC25-226)

// Before optimization: CPU Power Impact = 21
VStack {
    ForEach(videos) { video in
        VideoCardView(video: video)
    }
}

// After optimization: CPU Power Impact = 4.3
LazyVStack {
    ForEach(videos) { video in
        VideoCardView(video: video)
    }
}

Part 2: Timer Efficiency APIs

NSTimer with Tolerance

// Basic timer with tolerance
let timer = Timer.scheduledTimer(
    withTimeInterval: 1.0,
    repeats: true
) { [weak self] _ in
    self?.updateUI()
}
timer.tolerance = 0.1  // 10% minimum recommended

// Add to run loop (if not using scheduledTimer)
RunLoop.current.add(timer, forMode: .common)

// Always invalidate when done
deinit {
    timer.invalidate()
}

Combine Timer Publisher

import Combine

class ViewModel: ObservableObject {
    private var cancellables = Set<AnyCancellable>()

    func startPolling() {
        Timer.publish(every: 1.0, tolerance: 0.1, on: .main, in: .default)
            .autoconnect()
            .sink { [weak self] _ in
                self?.refresh()
            }
            .store(in: &cancellables)
    }

    func stopPolling() {
        cancellables.removeAll()
    }
}

Dispatch Timer Source (Low-Level)

From Energy Efficiency Guide:

let queue = DispatchQueue(label: "com.app.timer")
let timer = DispatchSource.makeTimerSource(queue: queue)

// Set interval with leeway (tolerance)
timer.schedule(
    deadline: .now(),
    repeating: .seconds(1),
    leeway: .milliseconds(100)  // 10% tolerance
)

timer.setEventHandler { [weak self] in
    self?.performWork()
}

timer.resume()

// Cancel when done
timer.cancel()

Event-Driven Alternative to Timers

From Energy Efficiency Guide: Prefer dispatch sources over polling.

// Monitor file changes instead of polling
let fileDescriptor = open(filePath.path, O_EVTONLY)
let source = DispatchSource.makeFileSystemObjectSource(
    fileDescriptor: fileDescriptor,
    eventMask: [.write, .delete],
    queue: .main
)

source.setEventHandler { [weak self] in
    self?.handleFileChange()
}

source.setCancelHandler {
    close(fileDescriptor)
}

source.resume()

Part 3: Network Efficiency APIs

URLSession Configuration

// Standard configuration with energy-conscious settings
let config = URLSessionConfiguration.default
config.waitsForConnectivity = true  // Don't fail immediately
config.allowsExpensiveNetworkAccess = false  // Prefer WiFi
config.allowsConstrainedNetworkAccess = false  // Respect Low Data Mode

let session = URLSession(configuration: config)

Discretionary Background Downloads

From WWDC22-10083:

// Background session for non-urgent downloads
let config = URLSessionConfiguration.background(
    withIdentifier: "com.app.downloads"
)
config.isDiscretionary = true  // System chooses optimal time
config.sessionSendsLaunchEvents = true

// Set timeouts
config.timeoutIntervalForResource = 24 * 60 * 60  // 24 hours
config.timeoutIntervalForRequest = 60

let session = URLSession(configuration: config, delegate: self, delegateQueue: nil)

// Create download task with scheduling hints
let task = session.downloadTask(with: url)
task.earliestBeginDate = Date(timeIntervalSinceNow: 2 * 60 * 60)  // 2 hours from now
task.countOfBytesClientExpectsToSend = 200  // Small request
task.countOfBytesClientExpectsToReceive = 500_000  // 500KB response

task.resume()

Background Session Delegate

class DownloadDelegate: NSObject, URLSessionDownloadDelegate {
    func urlSession(
        _ session: URLSession,
        downloadTask: URLSessionDownloadTask,
        didFinishDownloadingTo location: URL
    ) {
        // Move file from temp location
        let destination = FileManager.default.urls(
            for: .documentDirectory,
            in: .userDomainMask
        )[0].appendingPathComponent("downloaded.data")

        try? FileManager.default.moveItem(at: location, to: destination)
    }

    func urlSessionDidFinishEvents(
        forBackgroundURLSession session: URLSession
    ) {
        // Notify app delegate to call completion handler
        DispatchQueue.main.async {
            if let handler = AppDelegate.shared.backgroundCompletionHandler {
                handler()
                AppDelegate.shared.backgroundCompletionHandler = nil
            }
        }
    }
}

Part 4: Location Efficiency APIs

CLLocationManager Configuration

import CoreLocation

class LocationService: NSObject, CLLocationManagerDelegate {
    private let manager = CLLocationManager()

    func configure() {
        manager.delegate = self

        // Use appropriate accuracy
        manager.desiredAccuracy = kCLLocationAccuracyHundredMeters

        // Reduce update frequency
        manager.distanceFilter = 100  // Update every 100 meters

        // Allow indicator pause when stationary
        manager.pausesLocationUpdatesAutomatically = true

        // For background updates (if needed)
        manager.allowsBackgroundLocationUpdates = true
        manager.showsBackgroundLocationIndicator = true
    }

    func startTracking() {
        manager.requestWhenInUseAuthorization()
        manager.startUpdatingLocation()
    }

    func startSignificantChangeTracking() {
        // Much more energy efficient for background
        manager.startMonitoringSignificantLocationChanges()
    }

    func stopTracking() {
        manager.stopUpdatingLocation()
        manager.stopMonitoringSignificantLocationChanges()
    }
}

iOS 26+ CLLocationUpdate (Modern Async API)

import CoreLocation

func trackLocation() async throws {
    for try await update in CLLocationUpdate.liveUpdates() {
        // Check if device became stationary
        if update.stationary {
            // System pauses updates automatically
            // Consider switching to region monitoring
            break
        }

        if let location = update.location {
            handleLocation(location)
        }
    }
}

CLMonitor for Significant Changes

import CoreLocation

func setupRegionMonitoring() async {
    let monitor = CLMonitor("significant-changes")

    // Add condition to monitor
    let condition = CLMonitor.CircularGeographicCondition(
        center: currentLocation.coordinate,
        radius: 500  // 500 meter radius
    )
    await monitor.add(condition, identifier: "home-region")

    // React to events
    for try await event in monitor.events {
        switch event.state {
        case .satisfied:
            // Entered region
            handleRegionEntry()
        case .unsatisfied:
            // Exited region
            handleRegionExit()
        default:
            break
        }
    }
}

Location Accuracy Options

Constant	Accuracy	Battery Impact	Use Case
`kCLLocationAccuracyBestForNavigation`	~1m	Extreme	Turn-by-turn only
`kCLLocationAccuracyBest`	~10m	Very High	Fitness tracking
`kCLLocationAccuracyNearestTenMeters`	~10m	High	Precise positioning
`kCLLocationAccuracyHundredMeters`	~100m	Medium	Store locators
`kCLLocationAccuracyKilometer`	~1km	Low	Weather, general
`kCLLocationAccuracyThreeKilometers`	~3km	Very Low	Regional content

Part 5: Background Execution APIs

beginBackgroundTask (Short Tasks)

class AppDelegate: UIResponder, UIApplicationDelegate {
    var backgroundTask: UIBackgroundTaskIdentifier = .invalid

    func applicationDidEnterBackground(_ application: UIApplication) {
        backgroundTask = application.beginBackgroundTask(withName: "Save State") {
            // Expiration handler - clean up
            self.endBackgroundTask()
        }

        // Perform quick work
        saveState()

        // End immediately when done
        endBackgroundTask()
    }

    private func endBackgroundTask() {
        guard backgroundTask != .invalid else { return }
        UIApplication.shared.endBackgroundTask(backgroundTask)
        backgroundTask = .invalid
    }
}

BGAppRefreshTask

import BackgroundTasks

// Register at app launch
func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?) -> Bool {

    BGTaskScheduler.shared.register(
        forTaskWithIdentifier: "com.app.refresh",
        using: nil
    ) { task in
        self.handleAppRefresh(task: task as! BGAppRefreshTask)
    }

    return true
}

// Schedule refresh
func scheduleAppRefresh() {
    let request = BGAppRefreshTaskRequest(identifier: "com.app.refresh")
    request.earliestBeginDate = Date(timeIntervalSinceNow: 15 * 60)  // 15 min

    try? BGTaskScheduler.shared.submit(request)
}

// Handle refresh
func handleAppRefresh(task: BGAppRefreshTask) {
    scheduleAppRefresh()  // Schedule next refresh

    let fetchTask = Task {
        do {
            let hasNewData = try await fetchLatestData()
            task.setTaskCompleted(success: hasNewData)
        } catch {
            task.setTaskCompleted(success: false)
        }
    }

    task.expirationHandler = {
        fetchTask.cancel()
    }
}

BGProcessingTask

import BackgroundTasks

// Register
BGTaskScheduler.shared.register(
    forTaskWithIdentifier: "com.app.maintenance",
    using: nil
) { task in
    self.handleMaintenance(task: task as! BGProcessingTask)
}

// Schedule with requirements
func scheduleMaintenance() {
    let request = BGProcessingTaskRequest(identifier: "com.app.maintenance")
    request.requiresNetworkConnectivity = true
    request.requiresExternalPower = true  // Only when charging

    try? BGTaskScheduler.shared.submit(request)
}

// Handle
func handleMaintenance(task: BGProcessingTask) {
    let operation = MaintenanceOperation()

    task.expirationHandler = {
        operation.cancel()
    }

    operation.completionBlock = {
        task.setTaskCompleted(success: !operation.isCancelled)
    }

    OperationQueue.main.addOperation(operation)
}

iOS 26+ BGContinuedProcessingTask

From WWDC25-227: Continue user-initiated tasks with system UI.

import BackgroundTasks

// Info.plist: Add identifier to BGTaskSchedulerPermittedIdentifiers
// "com.app.export" or "com.app.exports.*" for wildcards

// Register handler (can be dynamic, not just at launch)
func setupExportHandler() {
    BGTaskScheduler.shared.register("com.app.export") { task in
        let continuedTask = task as! BGContinuedProcessingTask

        var shouldContinue = true
        continuedTask.expirationHandler = {
            shouldContinue = false
        }

        // Report progress
        continuedTask.progress.totalUnitCount = 100
        continuedTask.progress.completedUnitCount = 0

        // Perform work
        for i in 0..<100 {
            guard shouldContinue else { break }

            performExportStep(i)
            continuedTask.progress.completedUnitCount = Int64(i + 1)
        }

        continuedTask.setTaskCompleted(success: shouldContinue)
    }
}

// Submit request
func startExport() {
    let request = BGContinuedProcessingTaskRequest(
        identifier: "com.app.export",
        title: "Exporting Photos",
        subtitle: "0 of 100 photos"
    )

    // Submission strategy
    request.strategy = .fail  // Fail if can't start immediately
    // or default: queue if can't start

    do {
        try BGTaskScheduler.shared.submit(request)
    } catch {
        // Handle submission failure
        showExportNotAvailable()
    }
}

EMRCA Principles (from WWDC25-227)

Background tasks must be:

Principle	Meaning	Implementation
Efficient	Lightweight, purpose-driven	Do one thing well
Minimal	Keep work to minimum	Don't expand scope
Resilient	Save progress, handle expiration	Checkpoint frequently
Courteous	Honor preferences	Check Low Power Mode
Adaptive	Work with system	Don't fight constraints

Part 6: Display & GPU Efficiency APIs

Dark Mode Support

// Check current appearance
let isDarkMode = traitCollection.userInterfaceStyle == .dark

// React to appearance changes
override func traitCollectionDidChange(_ previousTraitCollection: UITraitCollection?) {
    super.traitCollectionDidChange(previousTraitCollection)

    if traitCollection.hasDifferentColorAppearance(comparedTo: previousTraitCollection) {
        updateColorsForAppearance()
    }
}

// Use dynamic colors
let dynamicColor = UIColor { traitCollection in
    switch traitCollection.userInterfaceStyle {
    case .dark:
        return UIColor.black  // OLED: True black = pixels off = 0 power
    default:
        return UIColor.white
    }
}

Frame Rate Control with CADisplayLink

From WWDC22-10083:

class AnimationController {
    private var displayLink: CADisplayLink?

    func startAnimation() {
        displayLink = CADisplayLink(target: self, selector: #selector(update))

        // Control frame rate
        displayLink?.preferredFrameRateRange = CAFrameRateRange(
            minimum: 10,   // Minimum acceptable
            maximum: 30,   // Maximum needed
            preferred: 30  // Ideal rate
        )

        displayLink?.add(to: .current, forMode: .default)
    }

    @objc private func update(_ displayLink: CADisplayLink) {
        // Update animation
        updateAnimationFrame()
    }

    func stopAnimation() {
        displayLink?.invalidate()
        displayLink = nil
    }
}

Stop Animations When Not Visible

class AnimatedViewController: UIViewController {
    private var animator: UIViewPropertyAnimator?

    override func viewWillAppear(_ animated: Bool) {
        super.viewWillAppear(animated)
        startAnimations()
    }

    override func viewWillDisappear(_ animated: Bool) {
        super.viewWillDisappear(animated)
        stopAnimations()  // Critical for energy
    }

    private func stopAnimations() {
        animator?.stopAnimation(true)
        animator = nil
    }
}

Part 7: Disk I/O Efficiency APIs

Batch Writes

// BAD: Multiple small writes
for item in items {
    let data = try JSONEncoder().encode(item)
    try data.write(to: fileURL)  // Writes each item separately
}

// GOOD: Single batched write
let allData = try JSONEncoder().encode(items)
try allData.write(to: fileURL)  // One write operation

SQLite WAL Mode

import SQLite3

// Enable Write-Ahead Logging
var db: OpaquePointer?
sqlite3_open(dbPath, &db)

var statement: OpaquePointer?
sqlite3_prepare_v2(db, "PRAGMA journal_mode=WAL", -1, &statement, nil)
sqlite3_step(statement)
sqlite3_finalize(statement)

XCTStorageMetric for Testing

import XCTest

class DiskWriteTests: XCTestCase {
    func testDiskWritePerformance() {
        measure(metrics: [XCTStorageMetric()]) {
            // Code that writes to disk
            saveUserData()
        }
    }
}

Part 8: Low Power Mode & Thermal Response APIs

Low Power Mode Detection

import Foundation

class PowerStateManager {
    private var cancellables = Set<AnyCancellable>()

    init() {
        // Check initial state
        updateForPowerState()

        // Observe changes
        NotificationCenter.default.publisher(
            for: .NSProcessInfoPowerStateDidChange
        )
        .sink { [weak self] _ in
            self?.updateForPowerState()
        }
        .store(in: &cancellables)
    }

    private func updateForPowerState() {
        if ProcessInfo.processInfo.isLowPowerModeEnabled {
            reduceEnergyUsage()
        } else {
            restoreNormalOperation()
        }
    }

    private func reduceEnergyUsage() {
        // Increase timer intervals
        // Reduce animation frame rates
        // Defer network requests
        // Stop location updates if not critical
        // Reduce refresh frequency
    }
}

Thermal State Response

import Foundation

class ThermalManager {
    init() {
        NotificationCenter.default.addObserver(
            self,
            selector: #selector(thermalStateChanged),
            name: ProcessInfo.thermalStateDidChangeNotification,
            object: nil
        )
    }

    @objc private func thermalStateChanged() {
        switch ProcessInfo.processInfo.thermalState {
        case .nominal:
            // Normal operation
            restoreFullFunctionality()

        case .fair:
            // Slightly elevated, minor reduction
            reduceNonEssentialWork()

        case .serious:
            // Significant reduction needed
            suspendBackgroundTasks()
            reduceAnimationQuality()

        case .critical:
            // Maximum reduction
            minimizeAllActivity()
            showThermalWarningIfAppropriate()

        @unknown default:
            break
        }
    }
}

Part 9: MetricKit Monitoring APIs

Basic Setup

import MetricKit

class MetricsManager: NSObject, MXMetricManagerSubscriber {
    static let shared = MetricsManager()

    func startMonitoring() {
        MXMetricManager.shared.add(self)
    }

    func didReceive(_ payloads: [MXMetricPayload]) {
        for payload in payloads {
            processPayload(payload)
        }
    }

    func didReceive(_ payloads: [MXDiagnosticPayload]) {
        for payload in payloads {
            processDiagnostic(payload)
        }
    }
}

Processing Energy Metrics

func processPayload(_ payload: MXMetricPayload) {
    // CPU metrics
    if let cpu = payload.cpuMetrics {
        let foregroundTime = cpu.cumulativeCPUTime
        let backgroundTime = cpu.cumulativeCPUInstructions
        logMetric("cpu_foreground", value: foregroundTime)
    }

    // Location metrics
    if let location = payload.locationActivityMetrics {
        let backgroundLocationTime = location.cumulativeBackgroundLocationTime
        logMetric("background_location_seconds", value: backgroundLocationTime)
    }

    // Network metrics
    if let network = payload.networkTransferMetrics {
        let cellularUpload = network.cumulativeCellularUpload
        let cellularDownload = network.cumulativeCellularDownload
        let wifiUpload = network.cumulativeWiFiUpload
        let wifiDownload = network.cumulativeWiFiDownload

        logMetric("cellular_upload", value: cellularUpload)
        logMetric("cellular_download", value: cellularDownload)
    }

    // Disk metrics
    if let disk = payload.diskIOMetrics {
        let writes = disk.cumulativeLogicalWrites
        logMetric("disk_writes", value: writes)
    }

    // GPU metrics
    if let gpu = payload.gpuMetrics {
        let gpuTime = gpu.cumulativeGPUTime
        logMetric("gpu_time", value: gpuTime)
    }
}

Xcode Organizer Integration

View field metrics in Xcode:

Window → Organizer
Select your app
Click "Battery Usage" in sidebar
Compare versions, filter by device/OS

Categories shown:

Audio
Networking
Processing (CPU + GPU)
Display
Bluetooth
Location
Camera
Torch
NFC
Other

Part 10: Push Notifications APIs

Alert Notifications Setup

From WWDC20-10095:

import UserNotifications

class NotificationManager: NSObject, UNUserNotificationCenterDelegate {

    func setup() {
        UNUserNotificationCenter.current().delegate = self
        UIApplication.shared.registerForRemoteNotifications()
    }

    func requestPermission() {
        UNUserNotificationCenter.current().requestAuthorization(
            options: [.alert, .sound, .badge]
        ) { granted, error in
            print("Permission granted: \(granted)")
        }
    }
}

// AppDelegate
func application(
    _ application: UIApplication,
    didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data
) {
    let token = deviceToken.map { String(format: "%02.2hhx", $0) }.joined()
    sendTokenToServer(token)
}

func application(
    _ application: UIApplication,
    didFailToRegisterForRemoteNotificationsWithError error: Error
) {
    print("Failed to register: \(error)")
}

Background Push Notifications

// Handle background notification
func application(
    _ application: UIApplication,
    didReceiveRemoteNotification userInfo: [AnyHashable: Any],
    fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void
) {
    // Check for content-available flag
    guard let aps = userInfo["aps"] as? [String: Any],
          aps["content-available"] as? Int == 1 else {
        completionHandler(.noData)
        return
    }

    Task {
        do {
            let hasNewData = try await fetchLatestContent()
            completionHandler(hasNewData ? .newData : .noData)
        } catch {
            completionHandler(.failed)
        }
    }
}

Server Payload Examples

// Alert notification (user-visible)
{
    "aps": {
        "alert": {
            "title": "New Message",
            "body": "You have a new message from John"
        },
        "sound": "default",
        "badge": 1
    },
    "message_id": "12345"
}

// Background notification (silent)
{
    "aps": {
        "content-available": 1
    },
    "update_type": "new_content"
}

Push Priority Headers

Priority	Header	Use Case
High (10)	`apns-priority: 10`	Time-sensitive alerts
Low (5)	`apns-priority: 5`	Deferrable updates

Energy tip: Use priority 5 for all non-urgent notifications. System batches low-priority pushes for energy efficiency.

Troubleshooting Checklist

Issue: App at Top of Battery Settings

Run Power Profiler to identify dominant subsystem
Check for timers without tolerance
Check for polling patterns
Check for continuous location
Check for background audio session
Verify BGTasks complete promptly

Issue: Device Gets Hot

Check GPU Power Impact for sustained high values
Look for continuous animations
Check for blur effects over dynamic content
Verify Metal frame limiting
Check CPU for tight loops

Issue: Background Battery Drain

Audit background modes in Info.plist
Verify audio session deactivated when not playing
Check location accuracy and stop calls
Verify beginBackgroundTask calls end promptly
Review BGTask scheduling

Issue: High Cellular Usage

Check allowsExpensiveNetworkAccess setting
Verify discretionary flag on background downloads
Look for polling patterns
Check for large automatic downloads

Expert Review Checklist

Timers (10 items)

Tolerance ≥10% on all timers
Timers invalidated in deinit
No timers running when app backgrounded
Using Combine Timer where possible
No sub-second intervals without justification
Event-driven alternatives considered
No synchronization via timer polling
Timer invalidated before creating new one
Repeating timers have clear stop condition
Background timer usage justified

Location (10 items)

Accuracy appropriate for use case
distanceFilter set
Updates stopped when not needed
pausesLocationUpdatesAutomatically = true
Background location only if essential
Significant-change for background
CLMonitor for region monitoring
Location permission matches actual need
Stationary detection utilized
Location icon explained to users

Background Execution (10 items)

endBackgroundTask called promptly
Expiration handlers implemented
BGTasks use requiresExternalPower when possible
EMRCA principles followed
Background modes limited to needed
Audio session deactivated when idle
Progress saved incrementally
Tasks complete within time limits
Low Power Mode checked before heavy work
Thermal state monitored

Display/GPU (10 items)

Dark Mode supported
Animations stop when view hidden
Frame rates appropriate for content
Secondary animations lower priority
Blur effects minimized
Metal has frame limiting
Brightness-independent design
No hidden animations consuming power
GPU-intensive work has visibility checks
ProMotion considered in frame rate decisions

WWDC Session Reference

Session	Year	Topic
226	2025	Power Profiler workflow, on-device tracing
227	2025	BGContinuedProcessingTask, EMRCA principles
10083	2022	Dark Mode, frame rates, deferral
10095	2020	Push notifications primer
707	2019	Background execution advances
417	2019	Battery life, MetricKit

Last Updated: 2025-12-26 Platforms: iOS 26+, iPadOS 26+

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