Some iPhone 14 Pro Users Reporting Flashing Horizontal Lines Upon Booting Up

Across social media, some iPhone 14 Pro and ‌iPhone‌ 14 Pro Max users are reporting that horizontal lines are flashing across their ‌iPhone‌ display when the device is being turned on, with no clear reason why or how to fix it.

iphone 14 pro display issues

MacRumors forum user Infernoqt and Reddit user u/1LastOutlaw

On one thread on Reddit, dozens of ‌iPhone‌ 14 Pro users are reporting that one or more green and yellow lines may flash across the screen before disappearing a few seconds later when the device is being turned on. According to those same users, Apple Support has informed them the issue is not a result of a hardware defect but is a bug in iOS 16.

According to users on Reddit, the Apple Support forums (1,2,3), and the MacRumors forum, the issue seems to have started following the iOS 16.2 update, although some users report the problem even occurring on older versions of iOS 16. One user on Reddit claims an Apple engineer informed them over the phone that Apple is working on a software patch for the issue, but the exact details are unknown.

Apple is currently testing iOS 16.3 with developers and public beta testers, but the update isn't expected to launch until early next year. The latest version of iOS 16 is iOS 16.2, which included several new features, including Apple Music Sing, Apple's new Freeform app, and more.

Related Forum: iPhone

Popular Stories

iOS 27 Mock Quick

iOS 27 Will Add These 8 New Features to Your iPhone

Sunday January 18, 2026 3:51 pm PST by
iOS 27 is still many months away, but there are already plenty of rumors about new features that will be included in the software update. The first beta of iOS 27 will be released during WWDC 2026 in June, and the update should be released to all users with a compatible iPhone in September. Bloomberg's Mark Gurman said that iOS 27 will be similar to Mac OS X Snow Leopard, in the sense...
airpods pro 3 purple

New, Higher End AirPods Pro Coming This Year

Tuesday January 20, 2026 9:05 am PST by
Apple is planning to debut a high-end secondary version of AirPods Pro 3 this year, sitting in the lineup alongside the current model, reports suggest. Back in September 2025, supply chain analyst Ming-Chi Kuo reported that Apple is planning to introduce a successor to the AirPods Pro 3 in 2026. This would be somewhat unusual since Apple normally waits around three years to make major...
14 inch MacBook Pro Keyboard

MacBook Pro Buyers Now Facing Up to a Two-Month Wait Ahead of New Models

Sunday January 18, 2026 6:50 pm PST by
MacBook Pro availability is tightening on Apple's online store, with select configurations facing up to a two-month delivery timeframe in the United States. A few 14-inch and 16-inch MacBook Pro configurations with an M4 Pro chip are not facing any shipping delay, but estimated delivery dates for many configurations with an M4 Max chip range from February 6 to February 24 or even later. At...
smaller dynamic island iphone 18 pro Filip Vabrous%CC%8Cek

iPhone 18 Pro Leak: Smaller Dynamic Island, No Top-Left Camera Cutout

Tuesday January 20, 2026 2:34 am PST by
Over the last few months, rumors around the iPhone 18 Pro's front-panel design have been conflicted, with some supply-chain leaks pointing to under-display Face ID, reports suggesting a top-left hole-punch camera, and debate over whether the familiar Dynamic Island will shrink, shift, or disappear entirely. Today, Weibo-based leaker Instant Digital shared new details that appear to clarify the ...
iPhone Top Left Hole Punch Face ID Feature Purple

iPhone 18 Pro Launching Later This Year With These 12 New Features

Thursday January 15, 2026 10:56 am PST by
While the iPhone 18 Pro and iPhone 18 Pro Max are not expected to launch for another eight months, there are already plenty of rumors about the devices. Below, we have recapped 12 features rumored for the iPhone 18 Pro models, as of January 2026: The same overall design is expected, with 6.3-inch and 6.9-inch display sizes, and a "plateau" housing three rear cameras Under-screen Face ID...

Top Rated Comments

cicalinarrot Avatar
40 months ago
Not sure what's the problem in the second picture but the guy on the left is probably The One.
Score: 34 Votes (Like | Disagree)
Piplodocus Avatar
40 months ago
Complaining about flashing green lines on boot up? These people clearly never grew up with old green monochrome CRTs. If it didn't flash green lines on boot you'd think something was broken. ?
Score: 30 Votes (Like | Disagree)
ProfessionalFan Avatar
40 months ago

..and that's just another reason why I'm waiting just 9 more months for the USB-C production model! Merry Christmas iPhone 14 Pro owners,..Lol
Not sure what the port has to do with this
Score: 23 Votes (Like | Disagree)
Kierkegaarden Avatar
40 months ago
Does “turning on” mean booting up? I reboot maybe once or twice a year — how is this even an issue?
Score: 16 Votes (Like | Disagree)
Nozuka Avatar
40 months ago
Seems a bit unfair, that only some people are getting a new boot animation!
Score: 16 Votes (Like | Disagree)
orbital~debris Avatar
40 months ago
Honestly, if it wasn’t there before, is cosmetic, only happens during startup, has no detrimental effect on using iPhone…

Then it’s really not a big deal, is likely software-related, and will probably be fixed in the next point release.

Go and enjoy Christmas / the festive season!
Score: 13 Votes (Like | Disagree)