An iPhone screen flickering issue can stem from both software glitches and hardware malfunctions, with solutions ranging from simple restarts to professional repairs. The problem appears particularly common in newer models like the iPhone 14 Pro, iPhone 16 Pro Max, and devices running recent iOS updates (iOS 16.6, iOS 17/17.7, iOS 18). Most sources agree that basic troubleshooting—force restarts, software updates, and settings adjustments—should be attempted first, while persistent flickering often indicates deeper hardware problems requiring Apple's intervention.

Key findings from the sources:

• Force restart is the most recommended first step across all iPhone models and iOS versions ^[1][4][6][7]
• Software updates and iOS restores frequently resolve flickering caused by bugs, especially after major updates like iOS 18 ^[5][9]
• Hardware-related flickering (e.g., vertical lines, persistent glitches) often persists even after replacements, suggesting systemic issues in some models like the iPhone 16 Pro Max ^[2]
• Specific workarounds like disabling 5G or adjusting brightness settings can temporarily alleviate symptoms ^[2][8][10]

Troubleshooting and Solutions for iPhone Screen Flickering

Immediate Software Fixes to Try First

Begin with non-invasive software solutions before considering hardware repairs, as these resolve the majority of flickering cases according to user reports and Apple technicians. These steps are universally applicable across iPhone models and iOS versions, with variations in effectiveness depending on the root cause.

For iOS 16.6, iOS 17/17.7, and iOS 18 users, the following sequence is most effective based on frequency of success in community reports:

• Force restart the device: This differs from a normal restart and can clear temporary software corruption. For iPhone 8 and later: Press and release Volume Up, press and release Volume Down, then hold the Side button until the Apple logo appears ^[1][4][7]. Users report this resolves flickering in approximately 30-40% of cases where the issue is software-related ^[6].
• Update to the latest iOS version: Flickering after updates (e.g., iOS 18) is often patched in subsequent releases. Navigate to *Settings > General > Software Update* and install any available updates. The iOS 18.1 update, for example, included display stability improvements for the iPhone 16 series ^[2][9].
• Reset all settings: This preserves your data while reverting system settings to default, which can eliminate conflicts caused by customized configurations. Go to *Settings > General > Transfer or Reset iPhone > Reset > Reset All Settings* ^[1][7]. Note that this will erase Wi-Fi passwords and display preferences.
• Restore via iTunes/Finder: For persistent software-related flickering, a full iOS restore is the most thorough solution. Apple technicians report this fixes "about 60% of flickering cases" in iPhone 16 models without requiring hardware replacement ^[5]. Backup your device first, then connect to a computer and select Restore iPhone in iTunes (Windows) or Finder (Mac).

Additional iOS-specific adjustments that have shown success in community reports:

• Disable automatic brightness: Some users experience flickering when ambient light sensors trigger brightness changes. Turn this off in *Settings > Accessibility > Display & Text Size > Auto-Brightness* ^[10].
• Reduce white point: Lowering this setting (under *Settings > Accessibility > Display & Text Size*) can mitigate flickering caused by extreme contrast ratios, particularly on OLED screens ^[10].
• Test in Safe Mode: Booting into Safe Mode (hold Volume Up during restart) helps identify if third-party apps are causing the issue. If flickering stops, uninstall recently added apps one by one ^[7].

When to Suspect Hardware Issues and Next Steps

If software troubleshooting fails, the flickering likely stems from hardware malfunctions, which are increasingly reported in newer iPhone models. The iPhone 14 Pro and iPhone 16 Pro Max exhibit particularly high rates of persistent flickering even after software fixes, suggesting design or manufacturing defects in some units.

• Vertical/horizontal lines appearing during flickering episodes, often green, white, or black ^[2]
• Flickering tied to specific actions, such as unlocking the phone or connecting to 5G networks ^[2]
• Symptoms persisting after iOS restores or across multiple replacement devices ^[2][5]
• Brightness-dependent flickering, where symptoms worsen at low/mid brightness levels (common in iOS 26 beta reports) ^[8]

• Loose display connections: Common in devices subjected to minor drops or vibrations, even without visible damage ^[6][7].
• Defective OLED panels: The iPhone 14 Pro and 16 Pro Max use advanced OLED displays prone to "panel lottery" issues, where some units have manufacturing defects ^[1][2].
• 5G interference: Multiple iPhone 16 Pro Max users report flickering ceases when 5G is disabled (*Settings > Cellular > Cellular Data Options > Voice & Data > LTE*), suggesting radio frequency interference with display drivers ^[2].
• Battery or power delivery issues: Flickering during charging or at low battery levels may indicate a failing battery or tristar chip ^[10].

Recommended actions for hardware issues:

• Check warranty status: iPhone 14 and 16 series flickering may qualify for free replacements under Apple’s limited warranty or consumer law protections, especially if the issue is widespread ^[1]. Contact Apple Support to initiate a claim.
• Visit an Apple Authorized Service Provider: For out-of-warranty devices, Apple’s flat-rate screen replacement cost is typically $200–$300, depending on the model ^[6]. Third-party repairs may void warranties and risk further damage.
• Document the issue: Record videos of the flickering (especially if it involves lines or patterns) to show technicians, as symptoms may not manifest during diagnostics ^[2].
• Consider temporary workarounds: If awaiting repair, disabling 5G or setting brightness to maximum can reduce flickering frequency in some cases ^[2][8].

For iPhone 16 Pro Max users, Apple’s internal policy appears to prioritize software restores over hardware replacements, even when the issue persists ^[5]. If multiple restores fail, insist on escalation to a senior technician or contact Apple’s executive relations team via their feedback page.