yashsingh1/xdaforums huggingface dataset:
[Google Pixel XL Questions & Answers] loeffler23:
Did you turn on OEM unlocking in settings? and try fastboot flashing unlock, or fastboot flashing unlock_critical
[Google Pixel XL Questions & Answers] Kutzki:
Thanks for the comment. Phone won't even turn on now. I left it at home charging.... won't turn on, nothing, fastboot, booting, nothing.
[Google Pixel XL Questions & Answers] loeffler23:
Have you tried holding the power button for like a minute? or try power + up and power + down for a minute.
[Google Pixel XL Questions & Answers] borxnx:
The fastboot command to unlock the bootloader on our device is "fastboot flashing unlock", not "fastboot oem unlock". Though I don't see why using the incorrect command would break anything here, that seems like a horrible design for ADB/Fastboot command updates...

And I would recommend looking up the rest of the fastboot commands for our device, there are some other changes as well, along with familiarizing yourself with the A/B Slots for boot.img and system.
[Google Pixel XL Questions & Answers] C4rb0nf00tpr1nts:
I have the same problem - my Pixel Xl was on charge, went out for 10 minutes, came back, picked it up - not turn on when press power button, tried everything.

Phone did have developer options on, had all the preps to root etc (OEM unlock turned on in settings).

I have tried everything.

My life is in that damn expensive paperweight...

"fastboot oem unlock" returns "FAILED (remote: 'oem unlock is not allowed')"

any ideas? anyone? help?...
[Google Pixel XL Questions & Answers] borxnx:
Look at my post just above yours. You are using the wrong command.

Also, unlocking your bootloader will wipe the device, so I'm not sure it'll fix your issue about your whole life being in the device.
[Google Pixel XL Questions & Answers] borxnx:
Did you get it sorted out?
[Google Pixel XL Questions & Answers] borxnx:
I hope all of the suggestions to your posts in all of the threads that you asked this in got you back up and running. I'll assume that your silence indicates that you got it up and running
[Google Pixel XL Questions & Answers] C4rb0nf00tpr1nts:
Hi, apologies, silence is due to trying to recover my life after a dead phone/brain...

It's dead, no way to get it going without replacing the main board which means no way of recovering my user data but I'm not fixing it anyway because it's too expensive - I can't find a new 2PW200 board anywhere except send it back to manufacturer.
[General Topics] frcraig:
Thank you!

Thank you so much! I purchased an OPPO r11s plust and not receiving e-mail notifications was driving me crazy.
[General Topics] sachinrohdia@gmail.com:
Hi, i am user of OPPO F7 and i don't have startup setting rest all i applied but still no notification
[General Topics] ingredient621:
Legend.

Absolute legend, thanks heaps. :D

Found myself in the same situation after the death of my Sony Xperia, and had tried everything but my alarm app and a couple of others kept getting force-closed and/or failing to show notifications after going to the background no matter what. That final tip for dragging down to lock an app in the app manager was the thing that did it, worked a charm. :good:
[General Topics] Guestx00191:
Can anyone advise how do I delete the complete contact list on a T-Mobile MDA Compact II (HTC PM200) (i-Mate JAM)
[Remix OS for PC] NightMean:
Hey I recently installed RemixOS on my VMware but I struggle to change the resolution to FHD. I tried adding video=LVDS-1:d to the boot command and it wasn't working neither vga=886 or any other number as it would be too small or without a change. So I'm asking how should I do it the proper way ?
[Samsung Galaxy S9  Questions & Answers] cr2:
Which Broadcom GPS receiver will be used on S9x ?

Is it the same BCM4774 like on older models, or the new dual-frequency L1/L5 BCM4775x ?
[Samsung Galaxy S9  Questions & Answers] buckyswider@comcast.net:
I still can't find the exact spec, but what they're showing doesn't look promising. the GPS "spec" from the marketing gibberish is exactly the same as that from the S8:

http://www.samsung.com/global/galaxy/galaxy-s9/specs/

http://www.samsung.com/global/galaxy/galaxy-s8/specs/
[Samsung Galaxy S9  Questions & Answers] white7561:
I was wondering about this too lol
[Samsung Galaxy S9  Questions & Answers] cr2:
The marketing people never (can) provide any usable technical information.

Even google people give you a pretty useless device table at https://developer.android.com/guide/topics/sensors/gnss.html

although they certainly know better: all phones with 'yes' in "Accumulated delta range" use BCM4774, and support Galileo (excluding Nexus 9 in the last row, which uses special firmware and has an older Broadcom chipset).

I hope somebody will do a hardware teardown, or will enable debugging log options in gpsconfig.xml on a rooted S9x :)

IMHO, the chances for BCM4775x are pretty slim, but let's hope for the better.
[Samsung Galaxy S9  Questions & Answers] buckyswider@comcast.net:
OK, just pre-ordered :( . Is there a way other than rooting I (or teardown!) that I can use to determine the GPS chip? If it's not the BCM4775 I'll probably just turn around and sell it prior to activation and don't want to mess it up too much ;)
[Samsung Galaxy S9  Questions & Answers] white7561:
Is that dual frequency thing really that important? What's about it that makes it so important?
[Samsung Galaxy S9  Questions & Answers] buckyswider@comcast.net:
Poor man's surveying equipment.

I have some rough land surveying to do (and potentially re-do over several iterations marking different boundaries) and the current ~10m range of accuracy doesn't cut it, while the ~10cm on the dual frequency chip would suffice. No, that is not my sole reason to consider an upgrade (as well it shouldn't be), but factored with everything else it pushes it over the edge. If it doesn't, I'll just wait until my S7 totally poops the bed in another year or so.
[Samsung Galaxy S9  Questions & Answers] white7561:
I usually get 6m of accuracy tho 10cm would be nice haha.
[Samsung Galaxy S9  Questions & Answers] cr2:
The only non-invasive way is to install this APK

https://github.com/google/gps-measurement-tools/releases/tag/2.0.0.1

and check the logs for L5 pseudoranges et al.

This approach is not that reliable as teardown | rooting, and can provide a false negative result.
[Samsung Galaxy S9  Questions & Answers] white7561:
It's dual carrier. 4755

Extracted this from S9 firmware

Edit: it seems like it's disabled tho. No CM accuracy

View attachment 4438060
[Samsung Galaxy S9  Questions & Answers] cr2:
Wow. And the a*holes keep quiet about it, damn marketing people ;)

Maybe one needs to upload some firmware patch for L5/E5 to work properly.

Where can i look at the gpsd binary ?

On the rooted phone you can edit gps.xml and enable the dual-frequency operation. I have written about it in Huawei Mate 9 GPS thread.
[Samsung Galaxy S9  Questions & Answers] buckyswider@comcast.net:
Great, thanks!! I guess I shouldn't get too pedantic, but Broadcom is calling this the BCM47755...should we just concede that this chip shows up as 4755 in firmware?

I can't decipher where in that xml it's saying it's disabled, but does it stand to reason that enabling this could come from a software update from samsung and/or verizon? i.e. I should keep the S9 once it arrives and they hope for the best??

Thanks!!!
[Samsung Galaxy S9  Questions & Answers] cr2:
This is the Broadcom enum for possible multifrequency modes:

GL_MULTI_CARR_RF_MODE_UNKNOWN
GL_MULTI_CARR_RF_MODE_L1
GL_MULTI_CARR_RF_MODE_L1_L5
GL_MULTI_CARR_RF_MODE_L1_LP
GL_MULTI_CARR_RF_MODE_L1_L5_LP
GL_MULTI_CARR_RF_MODE_L1_L2_L5
GL_MULTI_CARR_RF_MODE_L1_NN
L1L5
L1LP
L1L5LP
L1L2L5
L1NN
L1_EXT_ON
L5_EXT_ON

It is also interesting that they still stick to the 'rtistatus3.dat' for RTIconfig, which does not support Galileo. You can use rtistatus4.dat available from Broadcom site to fix that.
[Samsung Galaxy S9  Questions & Answers] white7561:
It's on the GPS.xml file. I've deleted the whole system.img tho. So I can't open it anymore

---------- Post added at 05:25 AM ---------- Previous post was at 05:24 AM ----------

Yeah interesting
[Samsung Galaxy S9  Questions & Answers] cr2:
If you already have the phone, please install this APK and tell me if the 'Galileo Navigation Messages' are being logged. They do not work on S8 and Huawei phones (all using Broadcom BCM4774).
[Samsung Galaxy S9  Questions & Answers] buckyswider@comcast.net:
I have a pre-order. Supposedly ships on the 16th, so I'll have it a day or two after that and I'll give this a whirl.
[Samsung Galaxy S9  Questions & Answers] cr2:
Thanks. Finally we have a real innovation in the smartphones, and not just a plastic cover color change ! +1 for Samsung.
[Samsung Galaxy S9  Questions & Answers] HKG123:
Not to be offense, but how could tell the new S9 would be using BCM4775X family?

According to Broadcom webpage, are there any chances that BCM4755 would be some kind of OEM product between BCM4752 & BCM4774? Are there any apps that can log / indicate that uses L5 channel? Thanks.
[Samsung Galaxy S9  Questions & Answers] buckyswider@comcast.net:
Welp, this is discouraging:

from the comments on this link (hooray for google translate!)

źródło: http://www.telepolis.pl/wiadomosci/samsung-galaxy-s9-w-benchmarku-antutu,2,3,41516.html
[Samsung Galaxy S9  Questions & Answers] cr2:
I will wait for the first real hardware teardown.
[Samsung Galaxy S9  Questions & Answers] trungthanh1288:
Yes. It's true that location is inaccuracy. 16m around each time I open gnss app
[Samsung Galaxy S9  Questions & Answers] kriss3:
Here he writes a little about 16m

https://www.zj42.com/c/a180621152958646985688.html
[Samsung Galaxy S9  Questions & Answers] cr2:
Your two last screenshots are great!

The last one shows raw GAL_E5a observation data

( SV=E19 CarrierFreqHz=1.17645E9)

and the previous one refers to

GPS_L1L5 for SVID 8,9,26,27 (all IIF) and GAL_E1E5a for E19,26.

Need to check wikipedia which GPS SVIDs are L5-capable.

Actually you should see more Galileo satellites, so disabling Beidou reception in gps.xml may help.

Please upload (or PM me) the "RAW MEASUREMENTS" log from GNSSLogger.
[Samsung Galaxy S9  Questions & Answers] trungthanh1288:
I can't read Chinese. But look like they not have solution to fix 16m

I think problem is there are same svid for one satellite with different L1 and L5.

GNSS Logger uploaded.
[Samsung Galaxy S9  Questions & Answers] trungthanh1288:
So. All i have to do now is wait for software update to work with dual CF ?
[Samsung Galaxy S9  Questions & Answers] cr2:
Sorry, i went really far into hardcore GPS technical details :)

The number "16" may be just some dummy placeholder

and the true scientific way of doing things is to record longer logs with GNSSLogger

under unobstructed clear sky (probably in the fields to the NE from your location)

and manually postprocess them with appropriate software (using this matlab google stuff or by generating proper RINEX files).

You are absolutely on the bleeding edge of the smartphone dual-frequency research now!
[Samsung Galaxy S9  Questions & Answers] cr2:
I have googled for RINEX2.11 with 8 L1/L5 observables, but it seems nobody

has used such system yet.

This is the most similar L1/L2 setup

8 C1 L1 D1 S1 P2 L2 D2 S2 # / TYPES OF OBSERV

but we will have

8 C1 L1 D1 S1 C5 L5 D5 S5 # / TYPES OF OBSERV.

I'm just curious what TEQC https://www.unavco.org/software/data-processing/teqc/teqc.html

and RTKLIB http://rtklib.com

will say about it.
[Samsung Galaxy S9  Questions & Answers] @Vortex:
Man,can you tell me how to disable GLONASS to test the Galileo E5a+L1C/A acc?

GLONASS are really sucks,in theory,acc is about 7m ,but infact single system test with Qualcomm phones showed that is always 10-11m
[Samsung Galaxy S9  Questions & Answers] sjbarbeau:
Just note that the accuracy value shown in apps usually comes from the Location.getAccuracy() Android API:

https://developer.android.com/reference/android/location/Location.html#getAccuracy()

...which has the following definition:

So, the position calculated by the GNSS could have an estimated accuracy of 16 meters (which is what is shown in the app), but a true accuracy of much less than that (even the cm level). You don't know what the true accuracy is unless you give the phone a ground truth value to calculate the actual error against. Obviously, you need to set the ground truth value as close to your actual position as possible, ideally somewhere that has a surveyed latitude and longitude.

I believe the GNSSLogger app has a mode to calculate actual horizontal error, as does another app that I maintain - GPS Benchmark:

https://play.google.com/store/apps/details?id=com.gpsbenchmark.android

I'd suggest calculating actual error using one of these apps and seeing what the true error is.

(P.S. GPS Benchmark will also tell you what the error of the estimated horizontal accuracy is - in other words, it compares the actual error against the estimated error)

---------- Post added at 06:55 PM ---------- Previous post was at 06:46 PM ----------

Yes, thanks for sharing these screenshots, they do give us a lot of info!

One note related to carrier frequencies being visible in GPSTest - as I noted in an update to the the Xiaomi Mi 8 section in the "Dual-frequency GNSS on Android devices" Medium article:

https://medium.com/p/152b8826e1c#3451

...as of version MIUI 10 8.6.21 firmware Xiaomi is providing carrier frequency data in the raw GNSS measurements Android API (https://developer.android.com/reference/android/location/GnssMeasurement), but NOT in the GnssStatus Android API (https://developer.android.com/reference/android/location/GnssStatus).

Because GPSTest uses the GnssStatus API to populate the UI, the CF column remains empty.

I'm hopeful that this will be resolved soon in a Xiaomi firmware update. Xiaomi seems to be pushing firmware updates at a lightning pace, at least compared to what we're accustomed to in the U.S.
[Samsung Galaxy S9  Questions & Answers] @Vortex:
I made some contact with the Xiaomi BSP engineer and he said probably will not have any update for this API,better include RAW GNSS measurement parse function in the GPSTest app. You will not expect the official give more energy on the sucks broadcom solution chips,while most of us used the Qualcomm chips
[Samsung Galaxy S9  Questions & Answers] sjbarbeau:
Thanks for reaching out to an Xiaomi engineer! Bummer, it would be very disappointing if this wasn't fixed.

Here's what the Android GnssStatus.getCarrierFrequencyHz() method documentation says, which is at

https://developer.android.com/reference/android/location/GnssStatus.html#getCarrierFrequencyHz(int)

The key part is "If the field is not set, it is the primary common use central frequency, e.g. L1 = 1575.45 MHz for GPS". Xiaomi isn't setting this field for any satellite, which, according to the Android docs, means that all satellites shown should be the primary frequency (L1). This obviously isn't the case, because GnssStatus records for the L5 signals are being shown as well (and this is correct - the L5 signals should appear in this list, also according to the above documentation).

So, I'd definitely encourage Xiaomi to update the GnssStatus API to follow the official Android docs.
[Samsung Galaxy S9  Questions & Answers] @Vortex:
It's not xiaomi's fault,as the engineer said(seems he was only be good at tuning the Qualcomm GPS nor the Broadcom chip),the external Broadcom chip just made some wrapper API for Android GPS data but the engineer didn't know much about the schematic inside the highly confidential Broadcom bought Globe Locate GPS solutions.ALL in all xiaomi is maybe a customer&end-user for broadcom,not a developer.In contrast,althoguh the Qualcomm's documents are highly confidential but very easy access from QTI and the KBA\note\Guide gives pretty clear guide to do something.:)
[Samsung Galaxy S9  Questions & Answers] trungthanh1288:
I have infomation that Galaxy Note 9 will have BCM47755 too. Confirmed by my brother's friend working in Samsung factory
[Samsung Galaxy S9  Questions & Answers] @Vortex:
image
[Samsung Galaxy S9  Questions & Answers] cr2:
On s9 ?
[Samsung Galaxy S9  Questions & Answers] kriss3:
Accuracy of 30 cm this chip

reaches about 12 minutes.

https://www.nextbigfuture.com/2018/...com-chip-enables-centimeter-accurate-gps.html

The RTX-Fast solution for Broadcom. 30 cm horizontal error in 68% of the cases in approximately 12 minutes. The RTX-Fast convergence using GNSS precision data is near instantaneous.

I have a question why after turning on l5 in

gps.xml in galaxy s9. The phone does not detect

even the l1 satellite.

I would like to turn on l5 again in s9

And whether there are programs or ways

check if this gps chip is actually turned off or maybe it needs those 12 minutes

time for the first detection of GPS signal.

In my opinion it required to check in the logs

programs what is happening with this gps chip

that it does not detect even l1 satellites.

Help me test this

How to check GPS logs or programs

to GPS

I turned on the l5 signal.

Gps, however, has an accuracy of 16m.

Detects positions in Google maps.

In other programs, gps shows 16m

accuracy.

It does not detect any satellite.

But generally gps chip after switching on l5

it works.
[Samsung Galaxy S9  Questions & Answers] Snineplus:
I don't think Exynos has one
[Samsung Galaxy S9  Questions & Answers] @Vortex:
No, Xiaomi 8, image for the private message
[Samsung Galaxy S9  Questions & Answers] avril.jil:
There is a new update in GPStest app. Please test it on xiaomi mi 8
[Samsung Galaxy S9  Questions & Answers] HKG123:
I have a Xiaomi 8 on hand. The latest version of GPSTest on Google Play is ver 3.03 dated Mar 25, 2018.
[Samsung Galaxy S9  Questions & Answers] avril.jil:
There is version 3.1.1. Check it out
[Samsung Galaxy S9  Questions & Answers] HKG123:
I figured out to install the latest beta, no much difference was noted. Accuracy is still 16m.
[Samsung Galaxy S9  Questions & Answers] cr2:
Accuracy is not defined by some junk android API. If it was 16 cm or 16 mm, will you trust these numbers more than 16 m ?

Since you have the L1/L5 receiver, save the GNSSLogger raw logs for a fixed location under open sky conditions (let's say for 1 hour) and let us postprocess it.
[Samsung Galaxy S9  Questions & Answers] kriss3:
You have to wait for android 9.0.

Because l5 on the galaxy s9

may require changes in android

since editing the gps.xml file is not enough.
[Samsung Galaxy S9  Questions & Answers] sjbarbeau:
If anyone is interested in more technical info on why the Xiaomi Mi 8 doesn't show carrier frequencies in the "CF" column in the GPSTest app, I've written up a summary here:

https://github.com/barbeau/gpstest/issues/167
[Samsung Galaxy S9  Questions & Answers] kriss3:
https://www.gsa.europa.eu/system/files/documents/dual_frequencies_qa.pdf

https://cnes.fr/fr/galileo-la-revolution-du-positionnement-centimetrique-en-marche
[Samsung Galaxy S9  Questions & Answers] PMPaul:
Android Pie released - waiting when it'll be available on Mi8 and test results....
[Samsung Galaxy S9  Questions & Answers] kriss3:
Samsung note 9 released.

No l5 gps presentation.

I see that Samsung does not care about the better

more accurate gps.

Someone might say that s9 does not have a chip

gps l5 because it has the end 2 and not 5.

After all, samsung once released

mobile device with tip 8 that

should. have GPS l5.

And yet the software does not support l5.

This is probably the policy of samsung

for some reason does not activate l5.

This may be due to

on

user's privacy, or

wait for qualmomm ktory kiedys

a gps chip will be out
[Samsung Galaxy S9  Questions & Answers] sjbarbeau:
I added a Galaxy Note 9 section to my "Dual-frequency GNSS on Android devices" article:

https://medium.com/@sjbarbeau/dual-frequency-gnss-on-android-devices-152b8826e1c

As you say, Samsung didn't mention Dual-frequency GNSS in their Note 9 launch event.

The only teardown so far that I've seen is by a Russian site, and it doesn't remove the covering from the portion of the board where the Galaxy S9 had the BCM47752 chip. So right now it's too early to tell if it includes a BCM4775X chip.

The Note 9 is publicly available on Aug 24 so hopefully we'll find out more then...
[Samsung Galaxy S9  Questions & Answers] lneam:
Note 9 has the same SoC (exynos 9810) as the rest of the family 9 (galaxy 9).

The only Samsung SoC with GNSS receiver inside are ...... 7270 7570 7870 7872 7880 7885 8895 9810. Only latest years, some Samsung SoC has GNSS capabilities. All of this years previous smartphone models, how do they managed το receive GNSS singals ? Propably with extenal chip from other company. Maybe from Broadcom, I belive.

If we visit the samsung exynos web page,we can found the specs about the inside GNSS receiver. It's only for GPS, GLONASS and BEIDOU. That's why Samsung has to add another external chip, to add the Galileo support. At least, from the Galaxy S3, samsung has cooperation with Broadcom. So, thats why I believe, Note 9 must have a chip from BCM4775X family

Of course my thoughts covers ONLY the devices with Exynos SoC. Samsung smartphone with snapdragon SoC (flagship) has embedded GNSS receiver of 6 systems (GPS, GLONASS, GALILEO, BEIDOU, QZSS, SBAS). Entry lever or midrange SoC support 4-6 GNSS systems.

Today in my country, released Note 9 model. So, I visit a well-known chain of stores (plaisio.gr) to test the device.

The measurements was inside the shop, a few meters from the door and the windows (who has covers of promotional posters). The application was the GPSTest (Sean Barbeau). Very soon the device shows the first satelites of GPS, next Galileo, then Glonass and at the end shows one (1) Beidou. The accuracy was 32m (H) and 0m (V). The PDOP was from 2-4 and the H/V DOP from 1.6 - 3.6.

Those measurements was very close but with some improvements compared to Galaxy S9+ I had test a few days before to the same shop.

new message

sorry, I forget the most important

looking the screen of GPSTest the CF column was empty of information
[Samsung Galaxy S9  Questions & Answers] kriss3:
We have dual broadcoma gps competitions

Huawei kirin 980 created his own dual gps chip

It seems to be something better than broadcom.

GPS (L1 + L5 dual band) / AGPS / Glonass / BeiDou / Galileo (E1 + E5a dual band) / QZSS (L1 + L5 dual band).

Huawei mate 20 and mate 20 pro have dual gps.
[Samsung Galaxy S9  Questions & Answers] sjbarbeau:
[MENTION=9029185]kriss3[/MENTION] you're right! Thanks for flagging this - I had looked at links earlier for the Mate 20 and Mate 20 Pro but it looks like they just announced dual-frequency support in the last few days. I just updated my Medium article to include a section on the Mate 20 and Mate 20 Pro - https://medium.com/p/152b8826e1c#b593.
[Samsung Galaxy S9  Questions & Answers] lneam:
Hi,

why do you believe this GNSS chip is better from Broadcom ? What technical info do you found to proof this ?

If we compare the specs from both manufactures, we can see there are equal specs ...

Kirin

GPS (L1 + L5 dual band)

Galileo (E1 + E5a dual band)

QZSS (L1 + L5 dual band)

Glonass

BeiDou

AGPS

Broadcom

GPS L1 C/A + L5

Galileo E1 + E5a

QZSS L1 + L5

GLONASS L1

BeiDou B1

AGPS has also all the known GNSS receivers inside devices with GSM modems, like smartphones or tablets.

---------- Post added at 12:09 PM ---------- Previous post was at 11:49 AM ----------

I want to add some more info about Huawei. This company has cooperation with Broadcom from previous models like P10 to add support for Galileo satellites. This model was using BCM4774 chipset.

So, maybe (???) latest model Huawei mate 20, has adopt Broadcom BCM47755, like Xiaomi did.