I’ve been getting red lines around a lot of my iPhone screen.  Does anyone else see this or what’s going on? Any fix or what am I doing wrong?
Thanks

This may be due to the camera setting Peak Focus Threshold which shows what is in focus. There are several settings which are off/low/normal/high.

Have you ever tried the basic solutions, like factory reset, reset iPhone or restore iPhone with iTunes?
You are suggested to fix your iPhone red lines with them one by one.
If not, it's further available to use Joyoshare iPhone system recovery Mac/Win to repair with No data loss.

More: 6 Solutions to Fix iPhone Red Screen Problem

If you have noticed vertical lines on your iPhone, you don't need to worry about this issue. You can use several ways to solve the issue and I would share some ways I know for fixing this issue.

1. Force Restart iPhone to Fix Red Line on Screen:
For iPhone 8 or Earlier: 1) Press the top (or side) button and hold it until the slider appears; 2) Simply drag this slider and turn the device off; 3) Now, you should press and hold the Top button (or the side button ) until the Apple logo appears.
For iPhone X: 1) Press Side Button and volume (+ or -) button and hold them; 2) Once the slider appears, drag it and turn the iPhone X; 3) Now, you should press and hold the Side Button once again to start your iPhone X.

2. Reset iPhone to Fix Red Line on Screen:
1) Go to “Settings” and tap the “General” option; 2) Then select the “Reset” option and tap “Erase All Content and Settings”; 3) If prompted, you should log into your Apple ID using the credentials; 4) Provide confirmation when prompted and wait patiently until the device gets erased.

3. Restore Your iPhone to Fix Red Line on Screen:
1) Start by opening iTunes on a computer and connect your iOS device to the computer (a Mac or a PC to do this) using the original cable; 2) If prompted, you should follow the onscreen steps by providing the passcode; 3) Select the iOS device as it appears on iTunes and you will find the summary panel and click on “Restore” option; 4) When prompted, you should confirm the restoration process; 5) Now, your device will be erased through iTunes and the latest iOS version will be installed and the device will function like a new one and configure the way you want.

4. Fix iPhone Red Lines on Screen with iOS Repair Software:
If the above methods still cannot solve your issue, you can use a tool for fixing this issue. Then you can make sure that you can fix the problem while keeping the data on your iPhone. With the help of the professional tool, you can fix your issue with ease.

This is likely loose connection if the display itself isn't damaged.It's also the cause of the software error of your iPhone. In this case, LazePaw iOS System Recovery is recommended to get rid of this red line issue with ease.

First, you can try to restart iPhone, use iTunes to restore iPhone, or update the iPhone to the latest version, if these methods can not fix, try to use the software to fix it, it can fix many iOS issues without losing your iPhone data.

It's probably Peak Focus Indication. I get it on my Android phone too, It can be switched off.

Most likely a display issue either with connection or with screen itself. Replace the screen and this should help. If you need anymore advice contact us directly
RegardsIfix
https://www.ifixnorwich.com/

no idea. never had that problem.