iPhone 11 - Screen showing vertical lines artifacts

JCChamo wrote:

Hi. I replaced the battery myself as I already had some experience with other smartphones.

The official warranty is long past gone. I don't get why I loose official support since there are also an auto-repair service (which is not exactly what I did) that let you order official parts and replace them yourself.

Reparaciones de autoservicio - Soporte de Apple

Yes, Apple does have a self-serivce repair option. But and this is an important but, iPhone 11 is not a phone which Apple sells parts for. So you bought some 3rd party, non-authentic battery, replaced the battery yourself and messed something up. You don't have an authentic battery in your phone and your phone is no longer eligible for support from Apple.

Either try to fix the phone yourself if you can, or take it to some iFixit type business where you are and see if you can pay them to fix the phone.

if it was me then I would

try restarting the ios device Force restart iPhone - Apple Support and check if it resolved it

if it did not then I would try Restore your iPhone, iPad, or iPod to factory settings - Apple Support

 if that did not resolve it then I would contact apple about repair Contact - Official Apple Support

JCChamo wrote:

Last Wednesday, february 4th, I was making dinner at the kitchen, set a timer on my iPhone, and suddenly when it ended I noticed some really weird vertical lines on my screen. It surprised me a lot because everything was going normal in the recent days. I didn't hit it. I didn't pour any water on. It was resting idle.

They are not static, it depends on the content displayed, sometimes more noticeable or less. And there is a general blurriness and grainy look in the pixels that neither was there before.

I searched online, and somewhere says it may be a damaged display flex cable. It is true that I replaced the battery 3 months ago, but it all went silky smooth.

https://discussions.apple.com/content/attachment/3c7b91e2-8fe5-4d7a-aefe-c212b3fa47cc

https://discussions.apple.com/content/attachment/b391ded9-dd3c-4380-a7f2-0f2c1b654cad

Who exactly replaced the battery? If you yourself did the battery replacement, you have made your phone ineligible for support from Apple unfortunately. And what I see from your photos is a screen which is failing. Whether that was a result of the battery replacement, we can't diagnose. But Apple won't likely be willing to touch your iPhone if you performed the battery replacement, so you'll be looking at purchasing a new iPhone.

JCChamo wrote:

Hi. I replaced the battery myself as I already had some experience with other smartphones.

The official warranty is long past gone. I don't get why I loose official support since there are also an auto-repair service (which is not exactly what I did) that let you order official parts and replace them yourself.

Reparaciones de autoservicio - Soporte de Apple

Because Apple offer a 90 day warranty based on their skilled repair by trained techs, not based on an amateur previously damaging other components.

You will have to take it apart again and find the damaged component and replace it, again.