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Dear all,
I recently got a Samsung Galaxy S2 from Swedish 3 Network.
Obviously the phone is bind to the carrier and I rooted the device and unlocked the SIM and bam! I got the phone working.
I wanted to test 3G Services from Vodafone and before I jumped on to that part something in between caught my attention..
Frimware update with Gingerbread 2.3.4.
Initially when I got the phone it was on PDA:XWKF4 PHONE: NEKF2 CSC: HTSKF1 with Gingerbread 2.3.3 with lengthy 3 Network boot loader.
The firmware that interested me is PDA:XWKI4 PHONE:XXKI1 CSC:Multi with Gingerbread 2.3.4. I flashed and the phone and it is back into sound operating mode without any hassles.
Now I decided to jump on to 3G testing part. I called Vodafone Care and they advised me to send an SMS to 144 mentioning ACT 3G which I did. I got a confirmation saying that 3G is active.
However, here comes the problem part. Whenever I turn Data Network mode all I see is "E" with up and down arrows. And when I go to Phone Settings -> About Phone -> Status -> Network Type it says Edge.
Am I missing anything here? To add ambiguity I didn't test 3G with the previous version of firmware. One thing I'm sure about is 3G worked on this phone before on 3 Network.
Any inputs greatly appreciated..
Regards,
A.
Fixed: No 3G on Samsung Galaxy S2 Vodafone India
Well..
My problem resolved..
I flashed my SGS2 with below firmware combination:
PDA:ZSKI3 (Hong Kong)
PHONE:XXKI3 (Hong Kong)
CSC:INU(India Localization)
And now I have H+/3G whenever I turn on Data Network Mode.
At last.. I'm at peace.. Device fully functional..
Regards,
A.
Hello Arun,
I too am having issues connecting to the 3G network of Vodafone in India. My SGS2 is from AT&T and I was able to root it & unlock it and its works fine with the call and other stuff. I flashed the UnNmaed v1.0.4 ROM and its been pretty stable.
I looked up at the CSC code on my phone by dialing in *#272*<your IMEI># and its shows as ATT. Can you please enlighten me on how to change the CSC to INU like yours so that I can access the 3G network here.
Thanks
Hey,
I'm running an SG 2 I bought in Mumbai about 6 months ago with the following stock firmware -
PDA: KE8
Phone: KE2
CSC: INU
Gingerbread 2.3.3
I activated 3G on Vodafone a few days ago and they insist its active from their end. Been thru the manual settings routine and restarted the phone a dozen times, but it refuses to latch onto 3G. Data works, but only EDGE, like you've mentioned in your original post (the E with the 2 arrows).
Any suggestions how I can get on to 3G? This is frustrating, and I'm positively a noob as far as rooting/flashing ROMS etc goes.
Thanks!
Hi all,
First time poster, long time follower!!
I'm hoping someone can help me here because i have a real headache with my galaxy s2.
When i got it at Christmas everything was perfect. But two weeks later i suddenly lost my 3g. Phone works fine on 2g (except for the slow speed), but i contacted my carrier 3Ireland and they said everything is fine on their end. My APN is perfect, i've tried toggling airplane mode, entering codes, data package checks. You name it and i've tried it.
When i force my phone to select 3g it looses all signal and i have to restart my phone and quickly go back into settings to choose 2g or i will loose signal again.
This is the following on my phone.
Android version 2.3.5
Baseband version I9100XXKI4
Kernel Version [email protected] #2
Build number GINGERBREAD.XWKI8
I've being reading about modem/radios lately, is that just the baseband? Could that be my problem. I'm a noob at this kinda thing.I just want my 3g to come back.
All help is greatly appreciated. Look forward to hearing from you all.
Thanks.
need rom for i777
http://forum.xda-developers.com/showthread.php?p=26351829#post26351829
Hi all,
Please go through above link and help me to install a ROM for my phone..tell me which rom is the best to use in India..
Does anybody know or experienced if an unlocked Skyrocket works on European cell carriers with data and voice?
Our 3g here in Belgium is on 2100 mhz and I seen that the Skyrocket has the 2100 mhz radio, but heard it only works if you have an AT&T sim.
Thanks in advance.
Got my SkyRocket (AT&T, unlocked version) and it works flawlessly in Belgium, Germany, France and the Netherlands so far. No problems at all connecting to voice, voice mail, data on Edge, 3G and HSPA+. GPS and Google Maps works great. Very nice phone!!
Good to know. I have a customer her that wants to use his over there. Now I just have to help him unlock it
Treatcon said:
Got my SkyRocket (AT&T, unlocked version) and it works flawlessly in Belgium, Germany, France and the Netherlands so far. No problems at all connecting to voice, voice mail, data on Edge, 3G and HSPA+. GPS and Google Maps works great. Very nice phone!!
Click to expand...
Click to collapse
Sent from my SAMSUNG-SGH-I727 using XDA App
Flash or use Odin and install the Rogers stock radio(XKJ7), it works best for me here. More dependable when it comes to locking onto cell signals and less battery is used when it's searching for data networks. I'm also running Jugg v4.1 from the Tmobile dev forums. It's based off of Rogers as well with no CIQ. Also faux kernel from Tmobile for extreme smoothness and lag free phone use.
Just throwing this out there and hope it helps somebody along the line. I travel mostly between Germany, The Netherlands, France, Luxemburg and live in Belgium. This setup has proven to work flawless for me. Bluetooth in my truck as I travel, wifi as needed, data network the entire time I travel and I always have cell signal. While on the road traveling my battery can last anywhere between 18-22 hours
Is it no problem about agps fast fix issue?
I think att device using att agps supl server.
So another country can't access
Att supl server, may be it will cause slow agps fix.
Sent from my LG-P990 using XDA App
Treatcon said:
Flash or use Odin and install the Rogers stock radio(XKJ7), it works best for me here. More dependable when it comes to locking onto cell signals and less battery is used when it's searching for data networks. I'm also running Jugg v4.1 from the Tmobile dev forums. It's based off of Rogers as well with no CIQ. Also faux kernel from Tmobile for extreme smoothness and lag free phone use.
Just throwing this out there and hope it helps somebody along the line. I travel mostly between Germany, The Netherlands, France, Luxemburg and live in Belgium. This setup has proven to work flawless for me. Bluetooth in my truck as I travel, wifi as needed, data network the entire time I travel and I always have cell signal. While on the road traveling my battery can last anywhere between 18-22 hours
Click to expand...
Click to collapse
Hi
Do you mean that you flash the T989 rom to our T727 phone ?
Hi Guys, I am planning to buy this phone, I am from Mexico and before I make the purchase I have a few questions and since I have been around with the HD2 for about a year now, I don't know anything related this one.
- Is there as much development for this specific model as the vanilla S2 one?
- I saw in a sticky thread that there is a way to unlock a S2 with an app, is it possible with this model?
- Since I will be using it in Mexico (Telcel carrier, GSM) I won't receive the ICS update right? but I guess I will be able to root it and then upgrade it following a guide in the Android development subforum?
- Does anyone tested the MHL (HDMI adapter) with this specific model or at least with the vanilla S2? How is it working so far?
- What are your thoughts overall about this phone?
Thanks guys, I posted this as a thread with no luck but I would like to know your opinion
Pulverizer said:
Is it no problem about agps fast fix issue?
I think att device using att agps supl server.
So another country can't access
Att supl server, may be it will cause slow agps fix.
Sent from my LG-P990 using XDA App
Click to expand...
Click to collapse
No clue, sorry.
justbenice said:
Hi
Do you mean that you flash the T989 rom to our T727 phone ?
Click to expand...
Click to collapse
Yes the hardware is the same, it also works in reverse. It's an I727 not T
i think this phone will work pretty much anywhere in this world as long as there's umts. I think it has 850,1900,2100 and also i believe it works on 1700 too.
Although we don't have that many development compare to internation s2, we still have some great development ongoing here.
for the ICS update, you can just flash it from here as long as it arrives.
Also you can flash the tmobile version rom to our phone too.
I'm using the Skyrocket fine in Sydney, Australia.
My 3G frequency is also 2100 MHz. We don't have LTE here yet but the HSPA+ speeds are amazing on this phone. On my old HD2 I was averaging about 3.5 Mbps. On the Skyrocket my average is about 7-8 Mbps with my highest test being 12.77 Mbps.
Not sure what the "agps fast fix issue" is but I've had no issues with the GPS. I'm using GPS Status to download the data file. My average lock speeds are between 5-7 seconds.
The only complaint I have about the phone is the whine/hissing sound I get from the audio at low volume when playing music. Other than that I'm loving the new phone: the impressive responsiveness, faster than ADSL2+ data speeds, very bright screen I can use outside in the sun and the sexy white case with the 'HID' back lit capacitive keys.
All the rom for i727 or T989 all work with i727 . The best radio is : T989UVKL1 .
BTW , compare to my all Samsung GAlaxy S2 i9100 , the i9100 have better singal .
I think skyrocket does not match our korea 2100 mHz network.
Data disconnection often appear, poor signal bar, can't establish call in some area.(like bed room)
I also flashed i727r, T989, T989D radio, but all problems are same.
So i decided my phone changed to T989 hercules.
Is it a good idea?
paradogz said:
I'm using the Skyrocket fine in Sydney, Australia.
My 3G frequency is also 2100 MHz. We don't have LTE here yet but the HSPA+ speeds are amazing on this phone. On my old HD2 I was averaging about 3.5 Mbps. On the Skyrocket my average is about 7-8 Mbps with my highest test being 12.77 Mbps.
Not sure what the "agps fast fix issue" is but I've had no issues with the GPS. I'm using GPS Status to download the data file. My average lock speeds are between 5-7 seconds.
The only complaint I have about the phone is the whine/hissing sound I get from the audio at low volume when playing music. Other than that I'm loving the new phone: the impressive responsiveness, faster than ADSL2+ data speeds, very bright screen I can use outside in the sun and the sexy white case with the 'HID' back lit capacitive keys.
Click to expand...
Click to collapse
I'd like to ask, specially PARADOGZ and TREATCON, if any of you perfomed a special procedure to make the phone work on 3G or 3G+. I live in Brazil and bought a I727R(Rogers). My carrier name is CLARO and it works on 2100Mhz... everything is working fine (phone call, wi-fi, 2G) except that I don't 3G .... 2G is very very slow.
when i go to phone status i get a variation between UMTS and HSPA and the symbol on the screen actually says I'm on 4G (3G or 3G+ on brazilian saying) but...of course this is not real....data goes lower than 50kbps... believe.... i'm not mistaken.... only 50kbps....
something is definetely wrong.. please help !!
---------- Post added at 07:38 PM ---------- Previous post was at 07:30 PM ----------
Treatcon said:
Flash or use Odin and install the Rogers stock radio(XKJ7), it works best for me here. More dependable when it comes to locking onto cell signals and less battery is used when it's searching for data networks. I'm also running Jugg v4.1 from the Tmobile dev forums. It's based off of Rogers as well with no CIQ. Also faux kernel from Tmobile for extreme smoothness and lag free phone use.
Just throwing this out there and hope it helps somebody along the line. I travel mostly between Germany, The Netherlands, France, Luxemburg and live in Belgium. This setup has proven to work flawless for me. Bluetooth in my truck as I travel, wifi as needed, data network the entire time I travel and I always have cell signal. While on the road traveling my battery can last anywhere between 18-22 hours
Click to expand...
Click to collapse
I'd like to ask, specially PARADOGZ and TREATCON, if any of you perfomed a special procedure to make the phone work on 3G or 3G+. I live in Brazil and bought a I727R. My carrier name is CLARO and it works on 2100Mhz... everything is working fine (phone call, wi-fi, 2G) except that I don't 3G .... 2G is very very slow.
when i go to phone status i get a variation between UMTS and HSPA and the symbol on the screen actually says I'm on 4G (3G or 3G+ on brazilian saying) but...of course this is not real....data goes lower than 50kbps... believe.... i'm not mistaken.... only 50kbps....
something is definetely wrong.. please help !!
I'm confused... specs states that I727R works on HSPA 2100 but I can't find WCDMA 2100 on *#2263#. so I can't disregard is a hardware issue.
I hope that the solution be only software.... maybe update BASEBAND....
I need help and I'm very worried.
thks
my specs are
SGH-I727R
android 2.3.5
baseband I727RUXKJ7
I'm gonna use my at&t skyrocket in turkey. So is stock radios make a problem wtih custom roms?
(Some times my signal gonna poor like bed room.)
I've used my unlocked stock ICS AT&T Skyrocket throughout the UK and in Portugal with 3G and HSPA+ speeds without any hiccups.
Great phone!
Sent from my SAMSUNG-SGH-I727 using xda premium
Using it in Israel on 2100 MHz 3G band. Working just fine, seen HSPA download speeds in excess of 5MB/s (bytes, not bits).
I used my skyrocket in Ukraine and Russia with At&t sim card and MTS sim card. Also worked in Frankfurt and Munich Germany. Hit and miss on strong signals but works regardless.
Sent from my SGH-I727 using xda app-developers app
Which unlock did u use?
Sent from my SAMSUNG-SGH-I727 using XDA Premium HD app
USB unlock. Made a backup of EFS first. Worked fine.
Jack_R1 said:
USB unlock. Made a backup of EFS first. Worked fine.
Click to expand...
Click to collapse
USB unlock? sorry could you elaborate more please. Is it a file to download/where? or which website you bought it from?
Hi fellow Xoom owners.
I'm having this issue with my 3G Xoom that I can't just get past.
As soon as FedEx handed me my internet-ordered tablet, I started looking into rooting methods and all.
Strangely, even though I live in Saudi Arabia, I received it with the US firmware, kernel or whatever it's actually called (MZ600 - XOOM WITH WI-FI + VERIZON 3G Build HRI66) which I didn't know at the time it was Verizon's but was wondering why 3G didn't work.
Anyway, I followed a rooting tutorial without paying attention to the build which got my Xoom stuck into the Moto logo thing.
Following tutorials into how to restore it, I downloaded the right build for Saudi Arabia (MZ601 - XOOM WITH WI-FI + UMTS Build H.6.1-38-9 for Retail Other International) which worked like a charm and with 3G!
Since, at that point I was already out of warranty, I flashed a Tiamat ROM and worked great but without 3G (bummer!).
Going through ROM trials, I'm now on Team EOS Verizon 4G ICS ROM but, as you've already guessed, no 3G for me (duh!).
I noticed that Team EOS are also working on a MZ601 ROM which should have worked to my favor of regaining 3G back but is somwhy isn't.
Bottom line of the story, I want to regain my 3G back while staying on an ICS ROM, preferably Team EOS's .
It's way better than the Honeycomb it came with and I'm not ready to lose all my game save files again!
Please help me.
The Link you provided in you post (Team EOS Verizon 4G ICS ROM)- That Build is not for your Device, as you device is not MZ602 with 4G LTE. Seeing that you received a US MZ600 Xoom that is actually CDMA and not GSM, it is suprising that the MZ601 UMTS worked for you. But since you say that it worked:
Try this one Team EOS ICS, EU 3G Xoom (umts_everest / MZ601)
http://goo-inside.me/roms/teameos/releases/umts_everest/Eos-umts_everest-1.0.0.zip
Google Applications (Required for all devices)
http://http://goo-inside.me/roms/teameos/gapps/EOS_GApps_ics_4.0.3_v10.5.zip
As Always, If This Was Helpful - Hit The Thanks Button!
I've already tried that ROM and for some reason it did't work.
Though on earlier versions, it used to give me a certain error which goes something like "phone.android.'something' stopped working" but now it doesn't.
As for the build I received it with, I haven'y the slightest idea how that happened!
I even took a picture of of my tablet before rooting in case anything went wrong... here.
Check this thread, you can try out Umts Everest - Euro & also Stingray 3G, as you are having CDMA xoom
hotdude2411 said:
Check this thread, you can try out Umts Everest - Euro & also Stingray 3G, as you are having CDMA xoom
Click to expand...
Click to collapse
Seems promising but gives me the "502 Bad Gateway" BS.
I'll try a bit later or will look for other sources.
EDIT: BTW, since I'm already on ICS, I don't need to factory reset, right?
yea there seems to be an issue with the download links.
its better to do a clean install, you can always backup your apps & data.
Since you brought it, how can I make a backup of my data?
By data I mean game saves 'cuz that's what I can't afford to lose {: s
I wanted to install CM9 on my Galaxy SII but stopped at the same data backup problem.
And, isn't there any tool to use on my PC to backup apps & data and manage my device ROMs... etc?
Titanium backup is one of the best apps to backup data and apps in my experience. You can find it on the play store. Also im not sure if you can buy the pro key for it but it makes reinstalling everything a breeze. Can you still connect to wifi?
Sent from my SPH-D710
@fredrick
RedXXII already gave the answer which i was gonna say. titanium backup is the best, you can backup & restore app + data easily. you just need a rooted device to use titanium backup.
So guys, let me get this straight:
You're saying that an MZ600 Xoom will work on a 900/1800 3g network just by flashing it with a european rom? I thought this was impossible
thread starter himself said that he flashed a 3G rom, which worked for him
I downloaded the right build for Saudi Arabia (MZ601 - XOOM WITH WI-FI + UMTS Build H.6.1-38-9 for Retail Other International) which worked like a charm and with 3G!
Click to expand...
Click to collapse
that's y its suggested to him to flash euro 3G rom
I have absolutely no idea how this happened.
I bought it from an Arabic online store for use in my country but received with a different ROM.
After restoring my tablet from the Moto logo error, I restored it to the official international firmware and it started working AND with Arabic support!
Maybe seller ordered the wrong software on the right hardware???
charos said:
So guys, let me get this straight:
You're saying that an MZ600 Xoom will work on a 900/1800 3g network just by flashing it with a european rom? I thought this was impossible
Click to expand...
Click to collapse
Agreed. The electronics involved in GSM and CDMA is definitely different. I think that is why his data never worked in the first place
OK.
I finally found working links for the codename android ROM v1.6.0 and tried the stingray 3G and the umts and none worked.
Any idea on what could be done at this point?
I re-checked the data bearers of both International and European firmwares and they are exactly the same.
Couldn't there be something like a missing driver or so that would make my Xoom recognize the carrier?
Or alternatively, isn't there a way to unlock it to any carrier supporting the same data bearers?
This is puzzling me for some time now. I have an MZ600 (Verizon 3G without the 4g upgrade) but I live in Europe. I know that MZ600 has Qualcomm MDM6600 which supports both cdma and umts. So I thought that using it in Europe would be as easy as switching Team Eos rom from "stingray_cdma / MZ600" to "umts_everest/MZ601" . I had the idea that this would change the baseband and I will manage to register on a 3g (european) network. Sadly, this isn't true and I'm still puzzled whether this is even possible or I haven't found the right way yet.
So to sum things up:
Is Qualcomm MDM6600 capable for both cdma & umts?
Is so, does anyone know someone that managed to get the MZ600 to register on a umts 3g network ?(you may see the signal of 3g but you cannot register)
If anyone can shed some light regarding this issue, it would be nice .
Check product specs for your original country and current place of use.
I believe they have totally different data bearers.
But, who am I to say?
I'm the one with a paradox over here!
so mr. Fredrick Sylar
what version of the xoom do you use...? the MZ600? or the MZ601?
well anyone ......?
have a look at this guys....
http://www.mydroidworld.com/topic/8333-tbh-us-gsm-band-unlock-for-droid-2-global-and-pro-updatezip-public-release/
Hi there.
I have just got a used-N5 on the Internet. It is a D821 (for Indonesia market I think).
Everything is fine except the LTE connection. (2G and 3G connection is normal)
The LTE problem is:
The searching speed is slow.
Even if LTE is connected, the response time and connection speed is extremely slow.
I have taken out my SIM card, and insert it into another N5 (D821) right next to this phone.
The speed is 10 times faster.
I am using CSL in Hong Kong, which the LTE is band 3 and 7 (1800 / 2600).
Baseband is updated to the latest version.
APN setting is correct.
No matter which ROM and kernel I use, the LTE problem exists.
Anyone have idea how to fix it?
Thank you very much!
y2kbugleung said:
Hi there.
I have just got a used-N5 on the Internet. It is a D821 (for Indonesia market I think).
Everything is fine except the LTE connection. (2G and 3G connection is normal)
The LTE problem is:
The searching speed is slow.
Even if LTE is connected, the response time and connection speed is extremely slow.
I have taken out my SIM card, and insert it into another N5 (D821) right next to this phone.
The speed is 10 times faster.
I am using CSL in Hong Kong, which the LTE is band 3 and 7 (1800 / 2600).
Baseband is updated to the latest version.
APN setting is correct.
No matter which ROM and kernel I use, the LTE problem exists.
Anyone have idea how to fix it?
Thank you very much!
Click to expand...
Click to collapse
Questions belong in Q&A.
Every D821 is the same, every D820 is the same. There are no specific regional versions for a D821.
The ROM and kernel have nothing to do with your network connectivity.
Try flashing a different radio version.
Lethargy said:
Questions belong in Q&A.
Every D821 is the same, every D820 is the same. There are no specific regional versions for a D821.
The ROM and kernel have nothing to do with your network connectivity.
Try flashing a different radio version.
Click to expand...
Click to collapse
Excuse me, do you mean try flashing a different baseband version?
I have tried the one comes with Kitkat (4.4.4) but no luck.
I know every D821 should be the same, but I just wonder why under same configuration (ROM, kernel, baseband), but the result is different.
I suspect if my D821 is a remarked D820.
Thanks.
y2kbugleung said:
Excuse me, do you mean try flashing a different baseband version?
I have tried the one comes with Kitkat (4.4.4) but no luck.
I know every D821 should be the same, but I just wonder why under same configuration (ROM, kernel, baseband), but the result is different.
I suspect if my D821 is a remarked D820.
Thanks.
Click to expand...
Click to collapse
Yeah, radio and baseband are the very same.
With the exact same software, the result can be different because not every device is made the same; the perfect Nexus 5 does not exist.
The only difference between a D821 and a D820 are the LTE bands it can access, everything else including the 2G/3G bands are the same. If it was actually a D820, you'd probably get no LTE at all, unless your carrier supports one of the bands a D820 can access; it would not mean you get "slower" or "worse" LTE performance - you'd either get it or you wouldn't.
It might just be a hardware issue if you think it's slow.
Lethargy said:
Yeah, radio and baseband are the very same.
With the exact same software, the result can be different because not every device is made the same; the perfect Nexus 5 does not exist.
The only difference between a D821 and a D820 are the LTE bands it can access, everything else including the 2G/3G bands are the same. If it was actually a D820, you'd probably get no LTE at all, unless your carrier supports one of the bands a D820 can access; it would not mean you get "slower" or "worse" LTE performance - you'd either get it or you wouldn't.
It might just be a hardware issue if you think it's slow.
Click to expand...
Click to collapse
I believe it is a hardware issue as well
If someone on xda give me a hope then I don't need to bargain with the shop
Thanks :good:
Hi all.
Last night I have brought it to the shop and tested there.
The LTE speed is very normal... I cannot trigger the problem by any means...
I suppose it to be the signal reception issue.
I left the shop and found the speed might be somehow dropped, but it could be still considered as normal.
I went home, re-flash another ROM and prepare for normal use.
However, the LTE becomes abnormal again...
I have found an interesting thing.
I have flashed stock ROM and OEM LOCK before bringing back to the shop, and it is normal speed.
I went home, OEM UNLOCK and flashed a custom ROM, it is abnormal.
Now, I have just re-flash the STOCK, and the LTE is not so normal.
But after OEM LOCK, it seems to be fine.
I believe there is no relation, but is it possible the OEM LOCK to do with the LTE issue?
Thanks. :crying:
y2kbugleung said:
Hi all.
Last night I have brought it to the shop and tested there.
The LTE speed is very normal... I cannot trigger the problem by any means...
I suppose it to be the signal reception issue.
I left the shop and found the speed might be somehow dropped, but it could be still considered as normal.
I went home, re-flash another ROM and prepare for normal use.
However, the LTE becomes abnormal again...
I have found an interesting thing.
I have flashed stock ROM and OEM LOCK before bringing back to the shop, and it is normal speed.
I went home, OEM UNLOCK and flashed a custom ROM, it is abnormal.
Now, I have just re-flash the STOCK, and the LTE is not so normal.
But after OEM LOCK, it seems to be fine.
I believe there is no relation, but is it possible the OEM LOCK to do with the LTE issue?
Thanks. :crying:
Click to expand...
Click to collapse
Bootloader lock/unlock state has absolutely nothing to do with your issue.
The ONLY difference between having it locked/unlocked is so you can flash images. It does NOT affect anything else.
I am a web programmer. I always suspect something strange when something cannot be explained (bugs in coding, I mean)
I have tested several times today. Locked bootloader still gives a poor LTE result.
I really have no idea why there is LTE problem...
y2kbugleung said:
I am a web programmer. I always suspect something strange when something cannot be explained (bugs in coding, I mean)
I have tested several times today. Locked bootloader still gives a poor LTE result.
I really have no idea why there is LTE problem...
Click to expand...
Click to collapse
Again, bootloader state affects nothing but the ability to flash images.
Yes I understand.
Just trying everything to find out a reason...
Hi folks,
I've got the US LTE original Shield tablet, which is the replacement that NVidia sent me for my original "pyro edition" tablet. Since ATT haven't released the Nougat (Android 7, software package 5.0 or 5.1) builds for this tablet, but the ROW tablets are able to get this update, I flashed my tablet using adb/fastboot with the full ROW 5.0 package downloaded from the NVidia site. I then connected to WIFI, and let it pull down the 5.1 update. Factory reset, flash TWRP, rooted with SuperSU. Easy peasy. Then I set up the tablet with my accounts and such.
Based on good info from user @Son-j I made two build.prop edits, changing ro.build.flavor to wx_na_do-user (was wx_un_do-user) and ro.product.name to wx_na_do (was wx_un_do). This changed the reported signal type from H+ to 4G. Unfortunately I'm having trouble finding the thread where he suggested doing this. I think it was on the geforce web forum.
The only problem I've found so far is that I'm not getting LTE speeds. I was in Chicago for a couple days, in an area with strong LTE signal, and my other devices were reporting LTE and getting ~20Mbps down / 10+ Mbps up. My Shield was pulling maybe 8 Mbps down at best , and 1-2 Mbps up. At home in my suburban location, the difference is negligible (most devices here do 5 Mbps down / 1 Mbps up, LTE or 4G).
Still, I'd like to fix this if possible. Are there further edits or flashings that will let my US device running the ROW build get LTE? I have gone in and verified that my APN settings are the recommended ones from ATT. These showed up automatically, and matched the ATT recommendations.
Thanks in advance!
Hi I'm not sure but I there was a thread here in XDA that says it's still difficult to change the LTE (RoW to US, and vice versa) bands because developers couldn't find yet which part of the code to modify... It's not also confirmed if it is indeed possible to change the LTE bands to support.
So basically, flashing RoW LTE on US LTE device will still result in US-LTE supported bands. That's what I understood.
But what you did is quite a revelation. Can anyone else confirm that modifying the build prop will work? Boy I'm excited!
Son-j said:
Hi I'm not sure but I there was a thread here in XDA that says it's still difficult to change the LTE (RoW to US, and vice versa) bands because developers couldn't find yet which part of the code to modify... It's not also confirmed if it is indeed possible to change the LTE bands to support.
So basically, flashing RoW LTE on US LTE device will still result in US-LTE supported bands. That's what I understood.
But what you did is quite a revelation. Can anyone else confirm that modifying the build prop will work? Boy I'm excited!
Click to expand...
Click to collapse
Hi @Son-j -
Thanks! Do you happen to remember which thread had those two buildprop edits? I found them after seeing a post from you a few days ago, but now I can't find it at all. My google mojo has fled me.
I'd like to have a link there so others can see the original source.
It would be nice to get LTE speed, if someone knows how, but most places where I use the tablet don't have super fast LTE, so the difference for me isn't enough to make me downgrade to the marshmallow US LTE build. I'll stick with nougat for now, and hope eventually to get full speed. Who knows, maybe ATT will eventually release the 5.1 US LTE build...
For clarity here is the set of APN settings I'm using. I'm going with the column in the center at the bottom for Tablets:
https://www.att.com/esupport/article.html#!/wireless/KM1062162
All of this was correctly entered by default except I did need to edit two keys:
APN was listed as broadband instead of Broadband (yes, I'm picky, but wanted to match case)
APN type was listed as just default. I edited it to match the listed setting of: default,mms,supl,hipri,fota
Also I'm set to LTE for "Preferred network type"
Ok I think there's a misunderstanding. Uhm, I'm trying to look for the related posts here at the Nvidia threads but it seems to have disappeared.
Just to set something straight, LTE speed is influenced by:
1. LTE device with specific supported LTE bands
2. LTE sim
3. Location with LTE signals
I take it that for your specific device - US LTE Shield Tablet (just like mine) - you satisfy all 3.
For the record, flashing RoW LTE on our US device won't change the supported LTE bands (check baseband code in About Tablet section of settings). So if you used to have AT&T LTE speeds/signals using US LTE ROMs, it shouldn't change if you flashed RoW LTE ROM on the same device.
We are speculating though that there might be a way, software/firmware speaking. We are hoping it's not hardware-baked.
Son-j said:
Ok I think there's a misunderstanding. Uhm, I'm trying to look for the related posts here at the Nvidia threads but it seems to have disappeared.
Just to set something straight, LTE speed is influenced by:
1. LTE device with specific supported LTE bands
2. LTE sim
3. Location with LTE signals
I take it that for your specific device - US LTE Shield Tablet (just like mine) - you satisfy all 3.
For the record, flashing RoW LTE on our US device won't change the supported LTE bands (check baseband code in About Tablet section of settings). So if you used to have AT&T LTE speeds/signals using US LTE ROMs, it shouldn't change if you flashed RoW LTE ROM on the same device.
We are speculating though that there might be a way, software/firmware speaking. We are hoping it's not hardware-baked.
Click to expand...
Click to collapse
Thanks Son-j. It kind of freaks me out that just a week ago I found the thread that recommended those two changes in buildprop, but now I can't find it, and apparently neither can you! So maybe I'm not crazy, since it's more than just me having problems finding it.
Anyway, yes, I used to get the LTE indicator on the tablet, when in an area that has decent reception of those bands. At my workplace, which is a building built like a Faraday cage, we can get only ATT service, via repeaters spread throughout the building (I switched from Verizon in part due to this). Phones almost always report ~3 bars of LTE in places I usually find myself within the building. However, speeds tend to be <10 Mbps (tested using Speedtest.net from either my phone or tablet). So, despite getting "LTE service" there (prior to my software update), the speeds were nothing so great. For this reason, I'm not TOO worked up that my US tablet running ROW software isn't reporting LTE... most places where I use the tablet don't have blazing fast LTE, and the difference between the 4G service it actually gets and the LTE it "used to get" is not that great.
I would like to fix the problem if possible, but it's not a critical thing, and I may just put it on the back burner until the US LTE 5.1 image comes out, then flash back to that. I've got lots of other fish to fry these days.
Always interesting discussion. Thanks Son-j!
Marc
If it's just a speed issue, that will be the provider's end. If it's a signal issue, that's device problem.
It's possible to get an LTE signal but with HSPA speed in some areas.
There is an app called LTE Discovery. It will tell you which band it is currently connected to. I've got it on my tablet on T-Mobile. I am having problems with it connecting to anything other than 3G. But I have read others with the Shield tablet having similar problems with T-Mobile.
Sent from the Delta Quadrant using Tapatalk
caseyatbt said:
There is an app called LTE Discovery. It will tell you which band it is currently connected to. I've got it on my tablet on T-Mobile. I am having problems with it connecting to anything other than 3G. But I have read others with the Shield tablet having similar problems with T-Mobile.
Sent from the Delta Quadrant using Tapatalk
Click to expand...
Click to collapse
Thanks @caseyatbt,
I was unaware of that app. I downloaded it on my phone (which gets LTE just fine at my house, most of the time) and it reports all kinds of fun stuff about the LTE signal it's connected to. On the US Shield tablet running ROW stock, this is what I get, which frankly makes me think the tablet is connecting via CDMA of all things, despite having chosen all the correct options in the Settings / Mobile section:
The fact that my radio seems to be connecting to WCDMA instead of GSM is kinda freaking me out, folks.
I'm tempted to try flashing the US LTE device Marshmallow recovery image, and see if that fixes it. I understand the flashes don't change the baseband, but since I flashed 5.0 and the the device did an OTA update to 5.1, that might have changed the baseband, eh?
So, if me flashing the marshmallow files doesn't fix it, I might reflash an earlier edition and let it OTA to latest edition, which presumably would install correct "latest" baseband for the model.
We'll see ... I'm still not committed to one direction or another.
Marc
OK, I just flashed the 4.4.0 version of Marshmallow. (full flash of all Nvidia recovery image files). After letting it reboot the first time, it checked for update and found none, as expected.
NO LTE. Downloded the LTE Discovery app, and it still only sees WCDMA signals. Uggh.
Now I'm going to install the 4.3, and let it OTA to 4.4, and hope that refreshes the modem/radio. If anybody is following this, wish me luck!
EDIT: OK, I'm in idiot mode. I downloaded what I thought was the 4.3 US LTE image and it was actually the 4.3 ROW image. I didn't notice this until after flashing, and seeing the H+ icon, and noticing lack of ATT usage tracking app. Oops.
I don't see the 4.3 US LTE image on the site; I'm now downloading the 4.1 image, and will do OTA updates from there, checking as I go how which signal my radio is getting.
No Joy.
I flashed US LTE 4.1 image. AFter the flash, LTE Discovery still reports just HSPA+ signal from WCDMA towers. I then let it take the OTA for 4.4... the latest available for the US LTE tablet, and after it ran through its update process, I'm still on WCDMA.
Uggh. I doubt there's any WCDMA signal where I work so I may have killed my tablet, at least as far as using it at work is concerned.
I'm sure there IS a path back, I just can't imagine what it might be, at the moment. I'll start a new thread to be more specific to this current problem.
Sigh.
Frankenscript said:
Thanks Son-j. It kind of freaks me out that just a week ago I found the thread that recommended those two changes in buildprop, but now I can't find it, and apparently neither can you! So maybe I'm not crazy, since it's more than just me having problems finding it.
Click to expand...
Click to collapse
Eventually found that thread with the buildprop changes, see here if interested or if you ever need to find it.
I just checked my Shield on T-Mobile. In the same area on LTE Discovery that yours says W-CDMA mine says the same thing (under Neighbor Cells). When you scroll to the bottom, what does it say for carrier?
Carrier: AT&T (310410)
caseyatbt said:
I just checked my Shield on T-Mobile. In the same area on LTE Discovery that yours says W-CDMA mine says the same thing (under Neighbor Cells). When you scroll to the bottom, what does it say for carrier?
Click to expand...
Click to collapse
Here are screen shots of my sim status (personal details redacted) and the LTE discovery window:
I am thinking that it is possible that W-CDMA doesn't mean what we think it means. It shows you connected to AT&T so you are not on someone elses network.
caseyatbt said:
I am thinking that it is possible that W-CDMA doesn't mean what we think it means. It shows you connected to AT&T so you are not on someone elses network.
Click to expand...
Click to collapse
I talked to ATT. It's sort of their backup network, not available everywhere. My other devices definitely show LTE. Will post a screen so from my phone a bit later which shows that.
Sent from my LG-D851 using Tapatalk
caseyatbt said:
I am thinking that it is possible that W-CDMA doesn't mean what we think it means. It shows you connected to AT&T so you are not on someone elses network.
Click to expand...
Click to collapse
Here are some pictures taken from my phone, which is working properly. In settings, you can see the LTE network type and in the LTE Discovery app screen capture, all the LTE towers.
ATT maintains a "vestigial" WCDMA to allow some level of connectivity by devices that don't have GSM/LTE, but it's not everywhere and it's pretty slow.
The Shield used to show LTE in the Settings Cellular network type, as well as giving the LTE icon, when appropriate. Now it's just HSPA. Sigh.
Frankenscript said:
Here are some pictures taken from my phone, which is working properly. In settings, you can see the LTE network type and in the LTE Discovery app screen capture, all the LTE towers.
ATT maintains a "vestigial" WCDMA to allow some level of connectivity by devices that don't have GSM/LTE, but it's not everywhere and it's pretty slow.
The Shield used to show LTE in the Settings Cellular network type, as well as giving the LTE icon, when appropriate. Now it's just HSPA. Sigh.
Click to expand...
Click to collapse
My T-Mobile phone shows similar to your phone with LTE. T-Mobile must have a similar vestigial WCDMA that is showing up on my tablet. I still haven't found anyone that was able to get T-Mobile LTE working after it was only giving them 3G and HSPA. I have heard it either worked or it didn't.