I can't seem to get it working on my Red Magic 3. I've tested using my rooted phone with the app "Network Signal Guru".
I've heard of several Chinese Android manufacturers disabling it, even if the chipset supports it, like Xiaomi and Lenovo. I hope Nubia isn't on that list either. It's a real shame if they decided to gimp the X24 modem in the Snapdragon 855.
Are any other users able to confirm or deny this? Thank you!
Tmobile Speeds
I received the 3s yesterday, did a test on network.
Comparing network speeds against my galaxy s8 plus, the red magic 3s doesn't reach the mobile network speeds on my s8 plus.
S8 plus consistently is over 150mbps-250mbps in my house (Seattle WA)
Red magic 3s sit around 6mbps to 11mbps.
It shows i was on the same band (Band 4)
Possibly the device doesn't support carrier aggregation.
Could it have to do with carrier aggregation? I have decided to send it back for a refund.
If you have a second:
1) Overall thoughts on the device.
2) Does it support VoLTE ( does it drop to 3G in call)?
3) Have you called TMobile to see if there is anything on their end to fix it?
Thanks!
There is way to verify Carrier Aggregation support from 28874 file what could get from modem or get UE Capability Information message with NSG Premium.
I have instructions here: https://mt-tech.fi/en/how-to-get-4g-supported-ca-combinations-from-your-android-phone/#QPST
Could someone send file to https://cacombos.com/contribute so then i can list device to cacombos.com?
Related
My brother brought Samsung Galaxy Note 9 SM-N960F. When calling him most of the calls goes to Voicemail so i just want to make sure it is the problem with network or phones bands that does not support to US bands
alwynjoshy said:
My brother brought Samsung Galaxy Note 9 SM-N960F. When calling him most of the calls goes to Voicemail so i just want to make sure it is the problem with network or phones bands that does not support to US bands
Click to expand...
Click to collapse
It's more than likely a network related issue,unless he has calls set to go straight to voicemail.
Which network/carrier is he using?
KOLIOSIS said:
It's more than likely a network related issue,unless he has calls set to go straight to voicemail.
Which network/carrier is he using?
Click to expand...
Click to collapse
he is using lyca (tmobiles network sharing). When i check with lyca website most of the bands are not come on international version
alwynjoshy said:
he is using lyca (tmobiles network sharing). When i check with lyca website most of the bands are not come on international version
Click to expand...
Click to collapse
No,the phone should work just fine,unless he's in an area that is served solely by Band 71,which is highly unlikely,as most,if not all areas are served by at least two bands.
My guess is he needs to call LycaMobile & see what's going on.
Another couple of possibilities:
1) The phone he's using is region locked or blacklisted.
2) Check the APN & make sure it's correct,but,this shouldn't be necessary on an unlocked device.
An unlocked phone that is otherwise compatible should automatically use the proper APN for whatever SIM is installed.
I had a few different models of the Note FE & never had issues with calls/data & I'm on T-Mobile US,so,there's really no reason why this Note 9 shouldn't work.
That's why I suspect it's either region locked,or,something else is going on w/LycaMobile.
@alwynjoshy
Perhaps the phone's anti-spam feature is detecting your number as such & sending it directly to voicemail:
https://us.community.samsung.com/t5...oing-straight-to-Voicemail-Note-9/td-p/395457
If that feature is indeed on his phone,have him turn it off & see if it helps.
Observations:
For any particular build generation:
1. Between the U and U1, none of the firmware files are the same, not AP, BL, CP or CSC.
2. Between the U firmwares, only the USERDATA changes. The others have the same name and SHA-512.
3. Between the U1 firmwares, ALL of the files have the same and SHA-512. This indicates SamMobile's different zip files for XAA, VZW, TMB, TMK, etc. are an "exercise". U1s are sold by non-carrier outlets who have no idea where the phone will be used.
4. Flash file size differences between the U and U1 are as follows:
AP - The Unlocked U1 flash is more than a gig larger than for the carrier U flash.
BL - They are very close to same size with the carrier version being 41K larger.
CP - They are very close to the same size with the carrier version being 327K larger.
CSC - The carrier U flash is about 20 megs larger than the Unlocked U1.
USERDATA - T-Mobile is 1.35 GB, Verizon: 1.76 GB. The US UNLOCKED U1 doesn't have a USERDATA flash file.
My Theory:
There are many theories swirling about that center on carriers restricting services when you don't buy your phone from them. My theory is much simpler. With all of the U carrier firmware, you will see a gig plus USERDATA flash file. The U1's firmware doesn't have a USERDATA flash file, but the U1's AP flash file is a gig plus larger than U's AP flash file. I also work in the UNIX world. Applications that are installed at the same time you install the operating system will be installed in the operating system area. If you install those same apps later, they will be installed in the user software area. My theory about the Note 9's firmware is that the U1 Firmware is Android+Samsung-specific software+Samsung specific hardware drivers+standards-based wireless network drivers+Samsung basic apps. Samsung gives wireless providers the same with standards-based wireless network drivers+Samsung basic apps in separate install. This could explain how the gig plus moved from the U1's APP to the U's USERDATA. It would also enable a consistent user interface for the same service across all wireless providers who may be providing the service using entirely different methods. This would explain why running the carrier-specific the U firmware vendors all support capabilities such as Wi-Fi calling and Video Calling, while when the same phones are running US Unlocked firmware, only some do. That would mean those with the services available have deployed them in a standards-compliant way. For instanced, for T-Mobile, Voice over LTE(VoLTE) and Voice over Wi-Fi(VoWiFi) work but USCC roaming doesn't. On Verizon, Voice over LTE(VoLTE) and Carrier Aggregation works, but NOT Voice over Wi-Fi(VoWiFi). With AT&T, neither work. So that likely means the Verizon does not support VoWiFi on their network while AT&T doesn't support VoLTE nor VoWiFi, and have proprietary implementations on their network that are only available if your flash their carrier-specific firmware. This would also explain why when a phone is running the US Unlocked U1 software with a Verizon SIM installed you will not have Wi-Fi calling available, and when you simply swap to the T-Mobile SIM, it will magically show up. This seems to me to simply be the U1 firmware responding to what it finds. It hasn't been that long since our phones would only work on one network. It hasn't been that long since the critical mass existed to migrate to the new LTE standard. The T-Mobile build-out only increased rapidly, and Sprint may not even be finished rolling out VoLTE yet, thus much less likely to have non-compliant systems in place. You could extend this reasoning to other wireless technologies as well. It also makes sense why the mechanism to prevent firmware upgrades to not be present in the U carrier-specific firmware, while it is present in the the standards-compliant U1 firmware. The U1 path adds support for new standards as it goes. The U path must replace proprietary methods for advantage or regulatory reasons. If this theory is correct, you would be better off with U1 firmware when traveling abroad. The name US Unlocked may have little to do with US, and a lot more to do with being standards-based, which is more likely what you would encounter in other countries where widespread deployment occurred later. The SM-N960U* already supports more bands than any phone I've found, and with US Unlocked U1 firmware, it may be the best world phone as well.
Why I believe this:
In an environment of democracy and capitalism, companies are free to make decisions that benefit themselves the most, and those who are stockholders appoint CEOs who know how to make that happen. They would get fired for not using other people's equipment and networks for free if they could. If they could make more money by getting rid of non-VoLTE devices to free up bands, they will, and the FCC is forcing it to happen. The fact that VoLTE is not controllable by the user interface, does not indicate it is not being used. Why would you give a user the option control VoLTE, Carrier Aggregation, etc.? Voice Over Wi-Fi VoWiFi employs SIP/VOIP technology, which predates smart phones. Towers and equipment are often not owned by the wireless providers because they are co-location sites that must be approved by local authorities. Standards-based equipment means it would be cheaper, you need less of it, you have more options with regard to inter-carrier agreements of which some are mandated by the FCC. Moreover, investments in non-standard methods and equipment devalues the company, and even determines how much they can leverage money. Holding out on people who do not buy their phones from them doesn't make sense because they are not denying these services to BYOD pre-pay users, or anyone who flashes their phones to their firmware. The FCC already forces them to unlock their phones before they are paid for, so it doesn't make sense to put themselves at a competitive disadvantage when it comes to acquiring users from other carriers. If carrier salesmen posts are true, they don't make much on phones anyway, and phones are more a vehicle to sell their services and accessories. They know that you know they don't have you over a barrel anymore and implementing interoperability is their new reality, and the reality of any maturing technology.
Surprises and Mysteries:
After I paid my premium membership for a month and went to SamMobile to download US Unlocked U1 firmware, I was surprised to find files for all different wireless network providers. Puzzled, I downloaded them all. SamMobile shows TMK as USA, so believing that I was getting US Unlocked, I downloaded it and flashed it. Booting up I got the Samsung Logo, which also made sense. I learned later that SamMobile has things mislabeled. TMK is MetroPCS, and XAA is the US Unlocked I should have flashed. However, then I noticed after the U1 files were unzipped that the flash files all had the same name. Then I tested their SHA-512 numbers and they were exactly the same, which means they are the same files. So, if they are the same files, why do they list the different wireless providers and put them in separate zip files with the carrier's extension on them? There isn't even an expectation of a difference because when they sell a U1 phone, they don't know which network it will be used on. What I do know is the Phone INFO app shows:
Firmware's CSC Code: XAA (I never flashed the XAA zip file. I flashed the TMK zip file, but since I found the flash files were the same for every U1 firmware zip file, seeing the US Unlocked code of XAA was not shocking.)
Active CSC Code: VZW (SIM installed)
Future
Great discussion .... Thanks
I've been down several roads with this including an S9 Exynos and then an S10
I then tried a One Plus 7 Pro and even switched to TMO because I couldn't get WiFi Calling with AT&T.
Currently am experimenting with a Note 9 that I believe was original sim locked to At&T but now unlocked and now with the most recent U1 firmware
Calling features work fine with TMO including WiFi Calling, but I'm looking to try AT&T as well (my reception is much better in my rural areas with att vs TMO).
Do you know if the calling features will work with the U1 firmware and ATT? ( If I get IMEI compatibility issues squared away with att)
Or do I have to flash U firmware?
I'm awaiting a Note 10 that is unlocked. Wondering if I can get ATT calling features to work on it?
jcrompton said:
Do you know if the calling features will work with the U1 firmware and ATT? ( If I get IMEI compatibility issues squared away with att) Or do I have to flash U firmware? I'm awaiting a Note 10 that is unlocked. Wondering if I can get ATT calling features to work on it?
Click to expand...
Click to collapse
I do not use AT&T. From what I've read, is no advanced features work with U1 on AT&T. With Verizon, VoLTE and Carrier Aggregation works fine, but ViLTE and VoWiFi does not.
I live in a T-Mobile fringe area that uses B71 exclusively (at least at my house). My experience with U vs U1 is that even though the signal is relatively weak, -118 dBm, the T-mobile branded U firmware holds the LTE signal fine. On the unlocked U1 firmware the signal is a tad weaker, plus it will drop the signal entirely and give me a no network error and/or it will roam on AT&T hspa. So clearly the Tmo software has optimizations for B71 at least over the unlocked U1.
I also have used a Pixel 3XL, an iPhone XR and a Moto G7 power in the same area. They do occasionally roam but I don't experience the loss of signal that I get with the Note 9 and the unlocked firmware.
BladeRunner said:
I live in a T-Mobile fringe area that uses B71 exclusively (at least at my house). My experience with U vs U1 is that even though the signal is relatively weak, -118 dBm, the T-mobile branded U firmware holds the LTE signal fine. On the unlocked U1 firmware the signal is a tad weaker, plus it will drop the signal entirely and give me a no network error and/or it will roam on AT&T hspa. So clearly the Tmo software has optimizations for B71 at least over the unlocked U1. I also have used a Pixel 3XL, an iPhone XR and a Moto G7 power in the same area. They do occasionally roam but I don't experience the loss of signal that I get with the Note 9 and the unlocked firmware.
Click to expand...
Click to collapse
This is very valuable information for a guy on the fence like me.
Thanks TONS!!!
BladeRunner said:
I live in a T-Mobile fringe area that uses B71 exclusively (at least at my house). My experience with U vs U1 is that even though the signal is relatively weak, -118 dBm, the T-mobile branded U firmware holds the LTE signal fine. On the unlocked U1 firmware the signal is a tad weaker, plus it will drop the signal entirely and give me a no network error and/or it will roam on AT&T hspa. So clearly the Tmo software has optimizations for B71 at least over the unlocked U1.
I also have used a Pixel 3XL, an iPhone XR and a Moto G7 power in the same area. They do occasionally roam but I don't experience the loss of signal that I get with the Note 9 and the unlocked firmware.
Click to expand...
Click to collapse
on U1 firmware, when you go to the phones dialer and dial:
*#2263#
do you get a hidden service mode menu like attached picture? if so then just force band 71 so that it dosen't switch. you can also disable other bands and leave only the ones you know work best so that device dosent try to switch to other weaker ones that you know will drop. also by setting to forcefully stay on LTE by selecting menu 4 in band selection and specifying the bands it should stop from reverting to hspa. but also might cause no signal. but again by selecting only the bands you know work i believe it should help. i have done many tests and what i do is to force bands one by one and check strength in a place where i know signal is poor. this way you weed out the bad bands. write it down somewhere and then go reactiavte all of them. then go to the disable band menu and remove everything except the ones listed previously and be left with only the stronger ones and stop fone from attempting to connect to random weaker ones.
Hi everyone,
Recently upgraded from my old Moto G6 to M31. Not sure why Samsung has not activated CA on this phone due to which we cannot get 4G+ (but only 4G) which can improve net speed by using multiple bands at once. Even the 2+ year old Moto G6 had this feature active.
Any way to activate that to improve network performance?
Ref :
https://r2.community.samsung.com/t5/Galaxy-M/carrier-aggregation-in-Samsung-m31/td-p/4846545
https://r2.community.samsung.com/t5/Tech-Talk/Carrier-Aggregation/td-p/4081356
I don't know if there is much todo for it because Exynos modem can't modify. But maybe it support Carrier Aggregation but not with combinations used in your carrier and that's why you don't see 4G+ /LTE+ icon on statusbar or on *#0011# Service Mode.
I have made instructions to check Carrier Aggregation support from modem logs: https://mt-tech.fi/en/how-to-get-4g...ions-from-your-android-phone/#Samsung_Devices . If you can get modem log there can then see if there is anything about Carrier Aggregation. If it support i will then list it to cacombos.com site where can check Carrier Aggregation supported devices and supported combinations.
Exynos 9611 does support Career Aggregation 3CA, most bands are supported, but Samsung has chosen to keep it disabled, it can be activated by a secret service menu, but we need to find out the correct steps, codes, and sequence to access that menu, Samsung service engineers have these codes.
Bro head over to m31 guide and discussion of carrier aggregation and let us solve this problem
Hi, any news about 4g+ issue on m31. I'm looking on net how to enable it.
Alex
Hello everyone, I live in Hong Kong and bought a Pixel 5 GD1YQ. The phone is great, but the network performance is not as I expected. I even suspect my Pixel 5 has a defective modem. I use the app NetMonster to check the bands that my phone connects to. It rarely shows LTE-A, but only connects to one band. What's even worse is when it connects to band 1 (2100 MHz), it sometimes drops internet connection and shows an 'X' in the signal bar, the signal bar is full though. I had an Xperia 1 before and it always connected to multiple bands (CA) wherever I go.
I have a little request here. Would you mind telling me whether your Pixel 5 always does CA or not. Also, if you have another phone, how is CA on the other phone comparing to Pixel 5? I just want to know whether my phone has a faulty modem or just isn't compatible with the carriers in Hong Kong? Thanks in advance.
Update: I just found that when I use another carrier, the phone changes bands more actively. So, I guess that's a compatibility problem. Now that I want to buy one more of another colour.
I've heard conflicting things regarding band support on this device.
These are the bands supported by the PFEM10 model, with the bold ones used by T-Mobile in specific for their 4G LTE connectivity:
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 66 - China
The only band missing is band 71, but otherwise the device has 5/6 4G bands needed for connectivity. The reason I'm asking is because I have a friend who imported the device from Hong Kong to the USA and he says when he plugs in his T-Mobile SIM to the device, he can't get 4G connectivity or any connectivity whatsoever. WiFi works fine, but no mobile data. We already called to try to activate the phone and was told by T-Mobile support "this device is not compatible with our network", even though the phone is factory unlocked and GSM-based.
Am I missing something here, or is there more to the picture than just band support?
dipleg said:
I've heard conflicting things regarding band support on this device.
These are the bands supported by the PFEM10 model, with the bold ones used by T-Mobile in specific for their 4G LTE connectivity:
1, 2, 3, 4, 5, 7, 8, 12, 17, 18, 19, 20, 26, 28, 34, 38, 39, 40, 41, 66 - China
The only band missing is band 71, but otherwise the device has 5/6 4G bands needed for connectivity. The reason I'm asking is because I have a friend who imported the device from Hong Kong to the USA and he says when he plugs in his T-Mobile SIM to the device, he can't get 4G connectivity or any connectivity whatsoever. WiFi works fine, but no mobile data. We already called to try to activate the phone and was told by T-Mobile support "this device is not compatible with our network", even though the phone is factory unlocked and GSM-based.
Am I missing something here, or is there more to the picture than just band support?
Click to expand...
Click to collapse
Try entering the IME numbers in T-mobiles web site(bring your own device page). When I was researching this(I'm on T-Mobile) some were incompatible. I have the global version and have 4g connectivity but no 5G. HD voice also works even though the indicator does not show on the status bar(it shows in the dialer screen.
BTW..forget about AT&T. They wont support the phone AT ALL! I left them because my Xiaomi Mi 10 Ultra worked fine on 5g until the 3g shutdown. They basically told me tough nuts so I left for T-Mobile.
g1xx3r said:
Try entering the IME numbers in T-mobiles web site(bring your own device page). When I was researching this(I'm on T-Mobile) some were incompatible. I have the global version and have 4g connectivity but no 5G. HD voice also works even though the indicator does not show on the status bar(it shows in the dialer screen.
BTW..forget about AT&T. They wont support the phone AT ALL! I left them because my Xiaomi Mi 10 Ultra worked fine on 5g until the 3g shutdown. They basically told me tough nuts so I left for T-Mobile.
Click to expand...
Click to collapse
Thanks for the reply man, I feel like we're the only ones here lol. I found an app on the Play store that allows you to take the first few numbers of a dummy IMEI and it fills in the rest of the numbers. I copy and pasted some variants of my Chinese IMEI version, and none of them works with t-mobile. I found a dummy IMEI number for the international version of this phone and made a few variants, plug them all into T-Mobile and they all say compatible, so looks good. So I'm pretty convinced that the international version will have 4G connectivity from your reports and a few other sources. I'm actually on MetroPCS but I know they use T-Mobile's infrastructure so I would assume it would be the same thing.
Another interesting thing is on Mint Mobile's IMEI compatibility checker, it gives some good detail... I typed in the Chinese IMEI and it said the phone did not support VoLTE, but I type in the IMEI number for international version and it says that it DOES support VoLTE. So my conclusion at this point is that the Chinese PFEM10 Oppo Find X5 Pro DOES support VoLTE but not specifically T-Mobile/MetroPCS's USA-based carrier implementation of VoLTE so it won't work despite the device having the compatible bands? Does that sound logical?
So do you have the options for things like volte and Wi-Fi calling under your sim settings on the global version?
dipleg said:
Thanks for the reply man, I feel like we're the only ones here lol. I found an app on the Play store that allows you to take the first few numbers of a dummy IMEI and it fills in the rest of the numbers. I copy and pasted some variants of my Chinese IMEI version, and none of them works with t-mobile. I found a dummy IMEI number for the international version of this phone and made a few variants, plug them all into T-Mobile and they all say compatible, so looks good. So I'm pretty convinced that the international version will have 4G connectivity from your reports and a few other sources. I'm actually on MetroPCS but I know they use T-Mobile's infrastructure so I would assume it would be the same thing.
Another interesting thing is on Mint Mobile's IMEI compatibility checker, it gives some good detail... I typed in the Chinese IMEI and it said the phone did not support VoLTE, but I type in the IMEI number for international version and it says that it DOES support VoLTE. So my conclusion at this point is that the Chinese PFEM10 Oppo Find X5 Pro DOES support VoLTE but not specifically T-Mobile/MetroPCS's USA-based carrier implementation of VoLTE so it won't work despite the device having the compatible bands? Does that sound logical?
So do you have the options for things like volte and Wi-Fi calling under your sim settings on the global version?
Click to expand...
Click to collapse
Yeah,I thought more people would chime in on this lol don't see the normal options for either but when I'm on a call, HD lights up and my calls are crystal clear.
I have now owned the PFEM10 in USA on T-Mobile for about a week and my unit connected to my service almost instantly after I moved my SIM over from my IN2025(Oneplus 8 Pro). Everything works fine but no 5G indicator on status bar. I have confirmed using the app "Network Cell Info Lite" that it does connect to the n41 band however and still can get over 100 Mbps download speeds. HD calling works too.
Also, something odd but hasn't really caused an issue. On my old phone, when going into Mobile Network settings, you would find a "Preferred network type" option allowing you to limit the phone connection to 5G/4G/3G etc. but on this phone you do not get that, or many settings for cell data at all, at least in my experience on the T-Mobile network.
I just received a new PFEM10 and after inseted my italian SIM the roaming is with AT&T 5G and hd voice (see attached)
They messaged me that I can use sms and data but no phone call.
I don't know if is because the phone is not registered with them or something else. Also msg. work on T-Mobile.