Why are there lines in my iPhone screen?

A defective display panel might be causing lines on your iPhone screen. If you’re within the warranty period, scheduling a visit to an Apple Store is advisable. Apple’s skilled technicians can diagnose the problem and replace the display if necessary. For those out of warranty, certified third-party service centers can offer display replacements at a more affordable rate. This ensures you don’t continue putting up with lines that disrupt your phone usage.

In my experience, lines on the screen were caused by a loose or damaged LCD flex cable. This cable links the screen to the main motherboard, and general wear and tear can sometimes lead to it loosening. I resolved this issue by taking the following steps:
1. Turn off the iPhone completely.
2. Hold the Power (Side) button and Volume Down button until the Apple logo shows up.
3. If the problem persists after reboot, it might be necessary to open the phone and reseat the flex cable.
Since doing this on your own can void the warranty, you might want to let a professional handle it if you’re unsure.

Water damage could be the reason for lines on your iPhone screen, even if it wasn’t directly exposed to liquid. Sometimes, moisture can seep in and cause internal components to malfunction gradually. If this seems likely, immediately turn off the iPhone and leave it in a bag of rice to draw out any moisture. However, for a more accurate and complete solution, it’s best to have the iPhone checked by professionals who can properly diagnose and fix the internal damage.

Hardware issues are a common culprit when it comes to lines on your iPhone screen. Specifically, it could be related to a malfunction in the display IC (Integrated Circuit) on the motherboard. This can occur due to a defect from manufacturing or if the phone has sustained a minor impact disturbing the internal connections. On top of that, extreme changes in temperature can also result in these display issues. To address this, I’d recommend visiting the Apple Store or an authorized service provider for a thorough inspection.

When I saw lines on my iPhone screen, I initially thought it might be a software issue since it appeared after an update. Restarting the phone didn’t help, so I took the following steps:
1. Backed up my iPhone using iCloud.
2. Restored the iPhone to its factory settings through iTunes.
3. Restored my backup after the factory reset was complete.
This solved the problem for me, and the lines disappeared. Remember to back up your data before attempting a factory reset to prevent any data loss.

My iPhone once showed lines across the screen, which turned out to be caused by a faulty screen connection. The lines would appear intermittently, particularly if I applied slight pressure around the screen edges. To figure this out, I gently pressed different parts around the edges of the screen and observed whether the lines changed. If a reboot doesn’t work, I’d suggest getting a screen replacement, as ongoing faulty connections could harm the device permanently.

Lines on an iPhone screen might also result from using an outdated iOS version. If this is your case, updating to the latest iOS could resolve the issue. Here’s how to do it:
1. Navigate to Settings > General > Software Update.
2. Download and install any available updates.
For me, the lines vanished after I updated the iOS. Often, software glitches get fixed in newer versions, making regular updates essential.