yashsingh1/xdaforums huggingface dataset:
[Samsung Galaxy S23 Ultra] Shipoftheline:
If my signal is above 100dBm a phone call would be pointless = common sense
[Samsung Galaxy S23 Ultra] skriefal:
I hope that isn't common sense. -80 is more than -100; in this example it is 20dBm more (stronger). And -110dBm is less (weaker) than -100dBm. Above is usually equated with "more" - or should be.

But the take-away is to not use the words "above" or "below" to refer to cellular signal strength. It's less confusing to laymen to use the terms "weaker" and "stronger."
[Samsung Galaxy S23 Ultra] xXSantyXx:
I actually had this problem twice already.

I'm on a 5G zone, and my phone wasn't even getting 4g or 3g, it just said "E" i couldn't even send whatsall messages, i did a speed test and it was 0.02mb down and 0.01up. I restarted the phone and it started getting 5g max signal again, but that's annoying. Has anyone been in that situation?
[Samsung Galaxy S23 Ultra] Guyinlaca:
Reception on the S23 Ultra is stellar. Data speeds are about 10% faster in the same spots as the S22 Ultra.
[Samsung Galaxy S23 Ultra] Paul_Deemer:
It would help when your posting about weak signals with your country. And same with good signals. I work in a new Hotel and when I am in 2nd basement level I would have trouble getting texts out on S22U on S23U it always works.

T-Mobile in U.S.
[Samsung Galaxy S23 Ultra] Shipoftheline:
I'm no voice coms expert but it should be pointed out low bars on 5G doesn't mean poor call quality because here in the UK at least calls aren't made by 5G they still use 2,3 & 4G & I don't see them using 5G for calls for at least 2 or 3yrs when the network has better coverage for it
[Samsung Galaxy S23 Ultra] jcsww:
In the US, 5G SA is fairly common. 2G and 3G networks by US carriers have been retired. VoLTE through 4G is pretty much the bottom end here.
[Samsung Galaxy S23 Ultra] Shipoftheline:
But do they do voice over 5G yet, I doubt it not in this early stage, I think T Mobile does but I suspect it will be sketchy
[Samsung Galaxy S23 Ultra] jcsww:
Yes. 5G SA is Stand Alone 5G, which is also used for voice. It is available in most places I have been over the past year. I am with T-Mobile though and there is a call quality improvement with 5G SA.
[Samsung Galaxy S23 Ultra] Shipoftheline:
Impressive considering the more areas concerned, I've still not got 5G where I live, black spots everywhere
[Samsung Galaxy S23 Ultra] cledee:
I have a USA (Comcast) S23U and so far I have not noticed signal issues. However I am mostly on LTE or 5G signal.
[Samsung Galaxy S23 Ultra] peterg21:
I have come from a Canadian S21 Ultra on Rogers network to an S23 ultra on the same network, and in both cases signal strength is roughly the same (I do not look at bars but dB). I get, using the Signal Tester app roughly -75 dBm on 5G 2650 Mhz.
[Samsung Galaxy S23 Ultra] nicu2111:
I have returned S23 Ultra because of bad celullar signal compared to Oneplus 8 pro that i gave to my son. I was thinking that my phone has faulty antenas. I am waiting for refund and I was thinking to try another one. Now that I found this topic, I am confused.

Maybe try an Iphone 14 pro max? I realy liked the Samsung...

From EU - Romania
[Samsung Galaxy S23 Ultra] jcsww:
iPhone's have some of the worst antennas in the cellular business. My 8T can get usable signal where my s23 Ultra can't. OnePlus sure knew how to tune a radio before they became OPPO.
[Samsung Galaxy S23 Ultra] nicu2111:
I don't understand how this is possible. You pay premium for not the best? Or cellular reception is no longer an important thing...
[Samsung Galaxy S23 Ultra] magames:
Same problem here. Came from OnePlus 8, which had better cellular signal. At least WiFi-calling helps
[Samsung Galaxy S23 Ultra] _GRIZZLY_:
For me it's not strange. Chinese devices usually have better cellular signal but samsungs devices have smaller SAR. I feel difference in my head especially during longer calls.

Unfortunately something for something
[Samsung Galaxy S23 Ultra] driqbd:
Both Samsung and iPhones have weak reception due to following health regulations since 2018. Earlier models had stronger reception even in remote villages. Chinese brands don’t care that much about health regulations that’s why they have much stronger reception. I bought a cheap chinese button phone which has 4g and hotspot feature exactly for this reason. It’s a KaiOS phone (Symphony PD1 4G). It has extremely strong reception and I get strong 4G signal even when on the train, where my Samsung/iPhone can’t even find any network. This is the best workaround I‘ve found. Or just buy those cheap portable/pocket 4G routers.
[Samsung Galaxy S23 Ultra] Cengiz67:
yes poor reception same problem
[Samsung Galaxy S23 Ultra] Cengiz67:
I have à better signal reception since i change the case, i was using a glossy kevlar case 😅
[Samsung Galaxy S23 Ultra] _GRIZZLY_:
Are you can share photos or link to website for this restrict signal case? ;)
[Samsung Galaxy S23 Ultra] Cengiz67:
This one sir :)
[Samsung Galaxy S23 Ultra] _GRIZZLY_:
Thanks. This is little suprise for me because look to very thin case
[Samsung Galaxy S23 Ultra] peterg21:
You first said Kevlar (Aramid fibre)

Not a surprise at all. It has been known that carbon fiber is lousy for phone cases (despite looking "cool") but companies still try to sell these cases. Carbon fiber is conductive and there are a myriad of sources showing that it is radio opaque. Kevlar is different and does not affect signal strength at all.
[Samsung Galaxy S23 Ultra] Cengiz67:
I have three like that

The glossy one is thin but worst for the signal

The kevlar one , thiner and no problem for the signal

The Kevlar Magsafe one, Heavy, nice looking and no problem fo
[Samsung Galaxy S23 Ultra] sunking101:
My Note 8 and especially Note 10 Plus had lousy signal reception. The Z Fold 4 was pretty good but the S23 Ultra is the best reception I've had for over 6 years!

It all depends where you are I guess. I'm on O2 in the UK which has up until now provided me with very poor signal reception so I'm delighted with the S23 Ultra.
[Samsung Galaxy S23 Ultra] HermesHidayat:
honestly... i have never had a Samsung phone be it with Exynos or Snapdragon that gets good cellular reception... but my Xiaomi does... not really a deal breaker for me but since it still works im fine with it.
[Samsung Galaxy S23 Ultra] aafrankies:
Huawei and Honor are much better than Samsung...
[Samsung Galaxy S23 Ultra] HermesHidayat:
so far only Xiaomi had very good reception... Huawei had okay signal... idk about now since the last Huawei i used was the P30 Pro.
[Samsung Galaxy S23 Ultra] aafrankies:
Magic 5 pro is much better than s23 ultra in same places...
[Samsung Galaxy S23 Ultra] HermesHidayat:
i wouldnt say MUCH better...according to gsmarena

Why Magic 5 Pro is Better.

1.Has slightly better brightness(50 nits difference).

2.100mAh more battery

3.21W Faster Wired Charging Speed.

4.35W Faster Wireless Charging Speed.

5.0.5W Faster Reverse charging Speed.

6.Has 1B Colors.

7.Has 16GB RAM Variant.

8.Has 50MP Telephoto Lens.

9.Has 50MP Ultra Wide Lens.

Why S23 Ultra is Better

1.Has Faster Processor.

2.Has 7 Times More Optical Zoom.

3.Has Gorilla Glass Victus.

4.Has 1TB ROM Variant.

5.Has Higher Antutu Score.

6.Has Way Better Aftersales in Indonesia.

id still stick to my S23 Ultra ...
[Samsung Galaxy S23 Ultra] aafrankies:
Magic 5 pro has unique display with 2160 Hz PWM andT ÜV Rheinland Eye Comfort Certification, superb reception and battery, I've been 6 hrs of navigation GPS in a hot days, and other utilise... 6 hrs SOT total with my s23ultra is a miracle...
[Samsung Galaxy S23 Ultra] sklchan:
Yes, the SAR is the culprit of the poor signal reception for any phone brand that follow strictly the regulatory requirement for SAR. There's no magic behind the scene, so you want to have better reception or better body health (where the SAR study still a myth but enforced by regulatory due to safety)...
[Samsung Galaxy S23 Ultra] sunking101:
Agreed. However the Z Fold 4 and S23 Ultra have been much better.
[Samsung Galaxy S23 Ultra] HermesHidayat:
im currently using the S23 Ultra and yes it has better but not good signal...as for ZF4 i do not have it. my last ZF was the ZF3. crappy signal as well...
[Samsung Galaxy S23 Ultra] ben_linux:
I also have both s23 ultra and magic 5 pro.

Regarding this aspect, I find the s23ultra good. Not exceptional but it works well and I have no issues.

On the other hand, the Magic 5 pro have stellar network reception & communication. But it's normal, they use the expertise of Huawei's patents they bought.

I know Xiaomi is also very good.
[Samsung Galaxy S23 Ultra] Ipse_Tase:
Chiming in as I got frustrated for always having to switch to WiFi Voice while in office...same carrier, same everything, my old S21 had 2-3 bars of LTE signal...now it drops to 4 G at times or lose signal altogether.

Fir me, it's an obvious antenna problem with this model. W variant here, Canadian unlocked from Scamsung.
[Samsung Galaxy S23 Ultra] aafrankies:
with Huawei and Honor I had 3-5 bars LTE, with s23ultra maximum 1-2, same places, same operator... what shame Samsung...
[Samsung Galaxy S23 Ultra] _GRIZZLY_:
Not shame, this is only bars.

But I can confirm that my previous Fold 2 had better cellular feeling. In S23U usually I must go 2 meters to window for calling (low cellular strengh in office building).

Maybe I try calling without any case and hope will be little better
[Samsung Galaxy S23 Ultra] Ady1976:
Old thread I know but I wish I saw this before I purchased the S23 Ultra a few days ago.

By far the worst signal of any phone I have owned for as long as I can remember.

Got 1 on Vodafone a few days ago, I am in a strong 4g+ 5g outdoor area near a major city, This piece of junk is barely giving me 2 bars most of the time it was 1 bar or nothing! Nothing at all not even 1 bar, Calls would drop, Mobile internet was abysmal.

Swapped the sim back in my X5 Pro and full signal, Swapped it again in my OP 8 Pro and you guessed it full signal.

Dreadful from Samsung imho, As far as I am concerned if you can't get the basics right, It's primary purpose is mobile phone after all then they don't deserve my hard earned, I sent it back today.
[Samsung Galaxy S23 Ultra] jcsww:
Signal bars don't represent an actual signal strength of a measurement. Some companies fudge their signal strength a lot more than others. You want to look at the -dB to truly gauge how well the device is pulling in that signal.
[Samsung Galaxy S23 Ultra] Ady1976:
Yes I know but mobile data was dropping it wouldn't even start a network speed test 9 out of 10 tries. I have never had this issue with any other mobile phone here, I do live next to a major city and my signal is always strong as it was when I removed the sim and put it back in my X5 Pro.

The signal was -106 dBm 34 asu but was in the mid 90's in my X5 Pro so something isn't right with the S23U, If I got anywhere near any sort of remote area there was no chance that phone would have give me a signal.

That's on Vodafone UK btw.
[Samsung Galaxy S23 Ultra] jcsww:
Might just be the one you got. I haven't had any complaints with reception with mine that I have had since 11 days before launch. Definitely not as good with reception as my OnePlus 8T but not really anything I would say is noteworthy.
[Samsung Galaxy S23 Ultra] Ady1976:
Yeah it's possible it could have been a faulty unit, Unlikely but it does happen I guess.

Yeah it was not good I have to say, 50% of the time of my last few days of use it was barely even registering a signal on the chart.

I love the phone but unfortunately that's something I can put up with.
[Samsung Galaxy S23 Ultra] saints5354:
Recently i found that my S23 Ultra mobile network is poor. I can see it connected to 5G but there is no internet connection ....i need to switch back to 4G then bck to 5G then i get my internet bck.
[Introductions] riggerton:
Want to know more about computer hardware and software
[Introductions] galaxys:
Welcome to XDA and enjoy your journey around the forums!💻📱⌚📺🙂 Regards
[Redmi Note 11 (spes/spesn)] NoMerzyThankYou:
Hello everyone. No rom or anything similar has been thrown into my device. When I install Gcam or a different camera application, I cannot change the camera in the default applications. What should I do in this case?

View attachment 5841217
[Redmi Note 11 (spes/spesn)] NoMerzyThankYou:
do you have any ideas?
[Redmi Note 11 (spes/spesn)] Am0w0gh:
Yeah same here, I saw a video where some person changed his default camera from Xiaomi camera to open camera (in some other device with MIUI), but when i downloaded open camera and checked this default camera settings page it didnt even show Gcam or open camera.

So possibly this is a bug from xiaomi's side.
[Redmi Note 11 (spes/spesn)] Cisuwek:
Hi everyone. Flashed to my Redmi wrong software. I tried flash with mi flash tool and qfil, unfortunately not successful. Mi flash I tried flash with mi flash tool and qfil, unfortunately not successful. Mi flash shows I tried flash with mi flash tool and qfil, unfortunately not successful. Mi flash shows error I tried flash with mi flash tool and qfil, unfortunately not successful. Mi flash shows error with I tried flash with mi flash tool and qfil, unfortunately not successful. Mi flash shows error I tried flash with mi flash tool and qfil, unfortunately not successful. Mi flash shows I tried flash with mi flash tool and qfil, unfortunately not successful. Mi flash I tried flash with mi flash tool and qfil, unfortunately not successful. I tried flash with mi flash tool and qfil, unfortunately not successful. You are welcome I tried flash with mi flash tool and qfil, unfortunately not successful. Please I tried flash with mi flash tool and qfil, unfortunately not successful. Please advise whether I should give to the service
[Redmi Note 11 (spes/spesn)] MXC48:
I also had the same problem every time, we can say that miflash tool doesn't work

I advise you to download the Roma in the fastboot version of your device, download the adb and fastboot tools then flash the file called install.sh I believe ( anyway there are three files in .sh one flash the Roma and check the bootloader, the other flash without erase the data and the last flash and delete all the data)

the command is, once the rom decompress to the same places as the adb and fastboot tools as well as the phone link to the computer in fastboot mode, /.name file.sh
[Redmi Note 11 (spes/spesn)] Cisuwek:
Can't enter fastboot mode. Phone is dead, only miflash and qfil can see any device
[Redmi Note 11 (spes/spesn)] MXC48:
I probably wasn't very clear then:

1. download the fastboot version of your rom here for example

2. install the adb and fastboot tools (there are plenty of tutorials)

3. unzip your rom in the same folder as adb and fastboot

4. put yourself in the same folder as your .sh files of your rom and

in the path bar of your file manager type cmd to open a terminal

5. connect your phone with a cable to your computer in fastboot mode

6. type in your terminal fastboot devices to see if the computer recognizes your computer your phone (if not install the fastboot drivers for your device there are tutorials on the net)

7. in your terminal type ./name of the file.sh and let it be, don't touch your phone any more in the meantime
[Redmi Note 11 (spes/spesn)] MXC48:
Can you enter recovery mode?
[Redmi Note 11 (spes/spesn)] Cisuwek:
Fastboot devices return nothing, none device is present. Unable to flash in flashmode
[Redmi Note 11 (spes/spesn)] MXC48:
So I don't know, you removed the bootloader so your warranty no longer works, try calling the service you never know
[Redmi Note 11 (spes/spesn)] Cisuwek:
Thanks
[Redmi Note 11 (spes/spesn)] chickendrop89:
To recover from hard-brick on xiaomi (qcom) phones. You need a authorized account (service center) or an exploit 😕
[Redmi Note 11 (spes/spesn)] LolFlasherNoob:
bro instead you could try this tool:

Mi PC Suite: Download latest version Mi Phone Assistant

Download latest version Mi PC Suite. Why Tool not detecting phone. Mi Phone Assistant Chinese version and English language.

miuirom.org
[Redmi Note 11 (spes/spesn)] gsausalito:
Ignoring!!!
[Redmi Note 11 (spes/spesn)] lenny73:
Exactly. It's like a crappy bot message, right?? It's f*cking unreadable. I insist: if they don't speak english, why the admin allows them to post their poorly translated sh*t in here???
[Redmi Note 11 (spes/spesn)] Evie103818:
I think it's spam. I used "find in page" and seems like he just copied and pasted the lines.
[Android General] John Bridges:
Thank you for this I'm going to try this. Here are some of the issues I have been having. When I plug it in to charge it. It keeps trying to boot and will not stop. I have to press the power button to buy bypass an error message that says this device is corrupted. I just got this phone from qulink (Amazon) and it was doing this since I opened it. It will not update the system. I believe the boot issue may have something to do with it. I'm not sure what kind of bloat wear it has but I do know something is running rapidly in the back ground I have practically no battery life and charging it is a night near. Another important question is can I use a chrome book to do the procedure? Any input would be greatly appreciated.

Thanks

John Bridges
[Android General] Viva La Android R.I.P.:
Greetings @John Bridges. You have come to the right place. Sounds like you're stuck in a classic boot loop. Flashing the factory firmware offered in my guide should certainly restore your device to its stock factory state.

The firmware, unfortunately, does include the typical bloatware specific to QLink devices. Of course,, once you get your phone restored via firmware flashing, you can always opt to unlock your bootloader, achieve root and debloat tie stock OS. So, your best option may be to first restore your device by installing firmware, and then rooting.

Serrano Firmware Restoration Guide
[Android General] John Bridges:
Greetings Viva,

Thanks for the great response. I will try your great advice and respect you for dedicating you're time to help the Android epidemic.
[Android General] Viva La Android R.I.P.:
Thank you for the kind words. The type of boot loop you are experiencing is caused from data corruption that occurs when Android decrypts the /userdata partition during the boot sequence. By default, Android encrypts all data on this partition for user security; as such, whenever your device boots up, Android decrypts the data to make it accessible. If any errors or data corruption are incurred during this process, you will be promoted to either try again or perform a factory data reset.

Sorry I just saw your reference to the Chromebook. I'm afraid it won't be much help on this. My guide focuses on a Windows setup; however, Linux or Max can also be used. Out of curiosity, have you first tried factory resetting the phone?
[Android General] John Bridges:
Yes I did still didn't help When I'd tried to start it a message would appear saying the device is court press power button to continue and it came out of the box with this problem. I tried to update it and several different errors would show up,one was something about OTA, Would it be possible to do the procedure with a chrome book?
[Android General] John Bridges:
The device is court I mean.
[Android General] John Bridges:
Corrupt I mean
[Android General] Viva La Android R.I.P.:
I understand on the device being data corrupted. Firmware restoration is definitely your best option. I know of no way to flash firmware using a Chromebook. I'll research it and see if it can be done.

Okay I did find an XDA guide on utilizing ADB & fastboot on Chromebook. https://xdaforums.com/t/guide-arm-n...-chromeos-adb-fastboot.2157230/#post-38232908

However, even the developers who posted in that thread refer to the procedure as extremely complex.
[Android General] Viva La Android R.I.P.:
@John Bridges have you had any luck with restoring your firmware via Chromebook?
[Android General] Viva La Android R.I.P.:
For those members who detest the abundance of bloatware included in the factory firmware package, I have unpacked the super.img, removed a considerable amount of the QLink apps, services and other bloatware, and then repacked the super.img. I have removed the annoying QLink lock screen, the QLink "free WiFi" service, a number of the preinstalled Google apps, and some other RAM demanding apps & services. I've noticed a remarkable improvement in performance on my own device as a result of debloating the stock OS in this manner.

I will post a new thread this weekend with this debloated stock OS, and instructions for fastboot installation. You will need an unlocked bootloader to install it.
[Android General] John Bridges:
VivaI

I just haven't had time to do it yet I am anxious to do it however and I will let you know how it went for sure.
[Android General] John Bridges:
VivaI and others,

It is a shame that people like myself that have to get these government phones to have one or hacked and it's a great thing you all are doing to give us a phone that will be actually uncorrupted. I don't know if this matters but the phone I got was from Amazon and it is supposed to be unlocked I don't know if that means the bootlegger is unlocked or anything else but I thought it may be helpful to you to know this.
[Android General] John Bridges:
And I'm talking about the phone or the replacement phone you get from q Link it is supposed to be unlocked and it comes from Amazon I checked on it online.
[Android General] Viva La Android R.I.P.:
To the best of my knowledge -- but not confirmed 100% -- all variants of the Serrano are GSM unlocked. Mine originally came from Amazon as well. By unlocked, I am referring to network unlocked and not the bootloader.
[Android General] John Bridges:
Very nice to know! I'm going to try and get it done tomorrow.
[Android General] Viva La Android R.I.P.:
If you have any questions, or if you encounter any obstacles during the procedure, just let me know.
[Android General] GIutton:
Could you share the link to this thread please? The search function on this forum is frustrating and not turning up any relevant results and with your profile set to private I coludn't search for your threads either.

Crap nevermind, I just noticed I could pull up threads you created using the search function and looks like it hasnt been posted yet. Could you update this thread when it is?
[Android General] Viva La Android R.I.P.:
Not finalized. There are bugs to work out.
[Android General] JT1510365:
Anyone know why we can't modify, add, or remove files from the system partition using an app like root explorer? I wanted to change my bootanimation on my hot pepper serrano 3 and remove unwanted apps and files since i now have it rooted with magisk 25.2 but system partition seems to be read only at the moment. You can delete stuff from the system partition but they come back after a reboot. Same goes with modifying or adding anything in /system. You need to mention in the OP that we only have partial root not full root. Can anyone confirm this and is there a solution to this problem? Is it just me that is having this issue?
[Android General] Viva La Android R.I.P.:
Indeed. Because there is no logical /system partition. Rather, /system, /product and /vendor are all part of a large partition called /super. This is known as the dynamic partition scheme, first introduced with Android 10. In order to modify /system, you must first extract the super.img, modify /system, repack and reflash /super.

The developer of Magisk discusses this issue in more depth here. https://github.com/topjohnwu/Magisk/issues/6832
[Android General] JT1510365:
What tool could i use that would do that i run both linux and windows and it would be helpful if you could give me a link to the proper tool i have to use to unpack the super.img
[Android General] JT1510365:
any chance of a twrp recovery for this device?
[Android General] Viva La Android R.I.P.:
I'm working on TWRP as a current project. To unpack the super.img, use the CRB Android Kitchen. It's available here on XDA.