01-03-2022 10:44 AM - upraveno 02-03-2022 11:25 AM
I received my Galaxy S22 Ultra 512GB, Exynos version, over a week before official release date. As I was using the phone I discovered several bugs with my unit, screen blackouts, occasionaly freezes, conversations loosing sound, phon not reachable over GSM network even if my signals was good. I decided to wait until official release date to see if new software would be released. On the 25th Samsung released new firmware for my phone, and I did a complet factory reset after new firmware was installed. I am now on firmware S908BXXU1AVBF and fresh phone setup.
My screen problems seems to be gone, but GSM network issues are still there. Several times I have been made aware of that my phone can not be reached by callers, even if phone is showing signals. Solution, reboot. Turning on and off flightmode did not help. Also I am experiencing sound dropouts during calls, call is not droped but sound oth ways are lost, duration 10 - 15 seconds. Also when making a call the phone uses much longer time to set up the call than other phones I have had. Calling my self from other phones give simular results, setting up phone calles to my Galaxy S22 Ultra take much longer then calling others.
Have been in contact with Samsung support, but there is no help to get there. Try this, try that, over and over again. I am starting to loose my patients now, and its impossible for me to have a phone I dont know if I can be reached at, and when I manage to set up a call, sound is lost several times during the call.
20-05-2022 02:42 PM - upraveno 20-05-2022 03:00 PM
great! Looks like it's working. it looks like the fix is "just" a FW problem. What I don't understand is that Samsung is not able to fix it...
o 20-05-2022 03:11 PM
Not able to fix = hardware problem.
o 20-05-2022 03:27 PM
if it works with manual band setting and doesn't work with automatic, I wouldn't say there's a HW problem. This seems more like an ignoring of the problem by Samsung, as they probably aren't that big on it.
o 20-05-2022 03:36 PM
On my end I did some further testing:
1. Having two SIM cards installed has negative impact on both: signal (about 3-5dBE) and stability (network does not drop or does not drop as often with one SIM Card, vs two). Signal is not as strong on the same band as in an old Huawei device with two SIMs. Difference is the same 3-5dBE. Net - it seems (needs more tests to confirm) that Samsung doesn't handle dual SIM without reduction in QoS.
2. @DistinctMike - you are onto something. Indeed manual band selection improves signal. Not everywhere, but in some places it does.
Not sure if it also stabilized signal drops, but I wouldn't be surprised if the culprit is a faulty band sensing & switching algorithm.
I'll give it a few more days + a trip out of town to see how it behaves.
In any case, this is a workaround and Samsung should address it. Good news that if this is the real issue, fix should be feasible with a software update.
o 20-05-2022 03:55 PM
Thanks for the Tests. HOPE it can fixed with an Update.
Maybe its a blacklist in the samsung not to connect to huawei equipment 🙂
o 20-05-2022 03:59 PM
in my case it seems that the phone ignores the b20 band (800MHz) in automatic mode, which has the best signal in my area (Czech Republic, O2)
o 20-05-2022 04:26 PM
How do i Find out witch band is used in sweden? Schould i just Google lte/3G band used in sweden and select them all?
o 20-05-2022 04:54 PM
Thanks @Improviso
It has definitely stabilised signal drops and dropped calls. Call quality seems better as well. Battery life has improved dramatically today as the phone isn't constantly searching for signal. I have a colleague on snapdragon s22+ but on a different carrier and he has no issues whatsoever so it makes sense this issue is affecting specific bands from different carriers.
I'm really hoping that this can be solved with a software update as I like your suggestion of a faulty algorithm as the main issue. If it was purely hardware I think MANY more people would be shouting about it.
My work office has always had lower signal than in other parts of my city but my previous Huawei Mate 40 Pro could just manage the switching to stable signals clearly better than the S22Ultra
o 20-05-2022 05:00 PM
Try search for LTE bands Sweden in Google. I found this
o 20-05-2022 05:03 PM
@Members_hdnuVGq also in Samsung Band Selection make sure to go to hidden settings and set network mode to LTE only. App allows you to specify when normal options only give you lte/3g/2g for example