S22 Ultra issues with screen.

[bhatech]

How do you tell which model you have (Exynos or Snapdragon)? Is there an app you can install?

What model number did you buy and which country? You could Google the model number and find out if it usea Snapdragon or Exynos

Also apps like CPU Z can tell you.

Hardware qcom means Snapdragon, I think for Exynos it may show different like maybe Samsung?

 

[wookiee2cu]

Thanks, I have the qcom. I thought it would say Exynos or Snapdragon.

 

[claykin]

How exactly would we know if we have one of these substandard chips in our phones? Since we don't hear that 65% of the phones out there aren't working, I assume it's not an "all or nothing" type of failure but a deterioration in performance (which is more difficult to notice). Maybe those who are claiming laggy startups and slightly lower benchmark scores in some of these other threads are in the 65% group?

Take these news articles with a grain of salt. Your phone will only come with a CPU from the supposed 35% group that passed all testing. The 65% failure rate means those CPU's are trash as they do not pass tests and cannot be used in a functional device.

Yields for cutting edge processes are typically 65% or less. My bet is even TSMC cannot do much better than 65% for a CPU built on their 4nm process (TSMC touts a greater than 70% yield, but that's aggressive for this new process). The article doesn't discuss where the issue is. Is it a wafer yield problem? is it a die yield problem? Are the failures appearing after packaging? Too many questions to know exactly the source of the issue. However, if the reporting is accurate, it appears Qualcomm isn't happy with Samsung's yields and supposedly they feel TSMC can do a better job.

It's already known that Qualcomm is working on the Plus version of the SD8 G1 CPU. This Plus version will have increased clock speeds and Samsung just can't get decent yields for the current SD8 G1, so there's no way they'll be able to do it for the Plus version. So, Qualcomm is going to TSMC for the Plus version. Wouldn't surprise me if this Plus version will have a nice performance bump.

 

[claykin]

Hopefully the fix is not by switching the screen resolution "quietly" to FHD+ when watching videos or changing the lock screen resolution to FHD+

It's likely a video driver issue or an issue they can address in the EX2200 with a microcode patch. They'll push it out via an OTA patch.

 

[claykin]

Not surprised. Samsung's foundry is very inefficient. I read that Samsung's 4nm nodes were roughly equivalent to TSMC's 7nm nodes, so it's not an apples to apples comparison. If you're getting a TSMC manufactured processor, it's going to be more efficient.

Hopefully Samsung can improve their foundry's and improve efficiency/yields. Otherwise TSMC is busy constructing a plant in the US which will manufacture chips. That will increase supply of chips in the coming years.

It's not so easy to discuss process differences between Samsung and TSMC. Here's a better discussion comparing the two foundries and their cutting edge processes.

https://min.news/en/tech/c79f95868a1e6534e33a41c16af881d8.html

 

[mustang7757]

https://www.sammobile.com/news/samsung-galaxy-s22-ultra-screen-flickering-bug-fix-coming-soon/

 

[mustang7757]

Figured it be software side bug

 

[KupKrazy]

https://www.sammobile.com/news/samsung-galaxy-s22-ultra-screen-flickering-bug-fix-coming-soon/

I like how they avoided saying this affected the Exynos variants. lol

 

[mustang7757]

I like how they avoided saying this affected the Exynos variants. lol

Yeah lol