[Q] Enabling HSUPA on i9020a, ATT - Nexus S Q&A, Help & Troubleshooting

I'm at a loss. I just got a new Nexus S i9020A for ATT, and have discovered that it is not HSUPA enabled. It is consistently 1.8 - 3.0Mbps down (normal for my area) and a MAX of 280 - 300kbps UP.
I've tried adding the ro.ril statements to build.prop as suggested in other Nexus S threads, rebooted 2 times and one more just for good measure, and HSUPA is still not flying.
Also the latency is notably higher than my Atrix was, and my friends rooted captivate w/ custom radio + hsupa.
Any info would be great.
Phone info:
Nexus S I9020A
Rom: Stock, GTJ61 2.3.4
Baseband: I9020AUCKE1
Kernel Version: 2.6.35.7-ge382d80

ok I hate when I post then find something, but its not DIRECTLY pointing to enabling HSUPA, so I figured I'd post here.. if any one has a thread I missed that is directly addressing HSUPA on the i9020A for ATT, please feel free to chime in and shut me up.
I've got HSUPA enabled.. Heres what I did..
I assumed that any ATT baseband would be crippled as the captivate is.. So I tried something.
http://forum.xda-developers.com/showthread.php?t=1116884
I downloaded and flashed: I9020XXKD1 baseband..
So far, its working great. the 850 bands SEEM to be enabled, although the tower I am currently on i don't know its scrambling codes / site id for primary (850mhz) and secondary (1900mhz) carriers thats visible in 4636...
I'm waiting on my Micro Cell to fire up and if it connects, 850 is operating.
Will post results..
Side note: build.prop edits are still present from other threads, including hsxpa=3 amount others.

What did you ever find out? I am considering leaving my Atrix for a i9020a and am a bit concerned with slow NS data...

Related

GRJ90 with OLD radio shows improvements?

So last night I installed GRJ90 from buglesspete's post, but little did I know it did not have the new radio in it.
All of my speeds were much improved today, as I posted elsewhere. Once I learned I was still on the old radio, I flashed the new one and my results stayed the same. No problem... just confusing, since I thought the improvement was supposed to come from the radio, right?
you may have just sparked the biggest thread on the forum's
people are gunna be flocking back to the old radio to get tethering back and use 2.3.5 to get teh upp'd speeds
i have also noticed that with the new update that the status icon shows 3g even when on 1x looks like they are faking the signal like they do with other sprint phones.
shabbypenguin said:
you may have just sparked the biggest thread on the forum's
people are gunna be flocking back to the old radio to get tethering back and use 2.3.5 to get teh upp'd speeds
Click to expand...
Click to collapse
Are you sure hotspot was blocked by radio and not grj90? I couldn't get hotspot to work last night while still on old radio, but I also couldn't get wifi tether to work so maybe something else was wrong on my end.
Sent from my Nexus S 4G using Tapatalk
i flashed grj90 through cwm and i still have tethering and hotspot available??? i dont have 4g here in vermont and was hoping the update would boost 3g but ive noticed no change.
grj22 with new radio = hotspot functioning.
also getting the 3g icon when in 1x areas. I see no improvement in the 3g/wifi speeds at all, and signal still fluctuates wildly.
My tethering is also working..
Sent from my Nexus S 4G
to the ppl saying tethering works for them.. just to be certain.. are you using the built in wireless hotspot feature found in the settings menu?
not sure why some people still have it working and some don't. i wonder if some qpst m.ip profile edits could trick it into working again?

[Q] My 3G/4G speeds are better during a phone call using T-mobile. Any reasons why?

I just started using the Skyrocket and I am on T-mobile. It runs well, thanks to everyone in the xda community. But, I've noticed something weird where my speeds perform much better when I am on a phone call than when I'm not.
So I'm basically asking:
What happens when I am on a phone call? (Uses 1900Mhz band? More/less power going into radio?)
What can I do or what app can I use to utilize/turn on what happens during a call while I use the internet?
I have attached photos of this (Juggernaut 5.0, faux 10u, KID radio). I have tried various radios and ran the test numerous times each. It should be a consistent result.
Combos I have tried:
ROM: Juggernaut 5.0, sky-ics
Kernel: faux 9m&u ,10m&u
Radio: KID, VLK1, KJ3, LB7 (Blaze)
APN: wap, epc, internet2/3
Isolated 2g and 3g/4g
EDIT: I apologize, I meant to put this in Q&A, at least I thought I did. Moderators please move it as you see fit. Thanks.
bump. i'd like to know if anyone has any insight to this.

[Q] New to SGS2 727R

Hi all.
I just finished picking up my sgs2lte. Really excited about it. I just finished rooting it and now I would like to install an ICS 4.0.4 rom.
My specs are:
SGH-I727R
Android 2.3.5
Baseband I727RUXKJ7
Kernel 2.6.35.11
Build GB.RUXKJ7
I am hoping someone can assist me with this.
What is the best baseband for rogers?
What is the biggest sdcard that I can buy for it? I heard that this device can now accept 64 class10 sdcards, is this true?
Thanks all,
Heeter
I don't think it matters much.
UCLE2 is the recommended modem for most ROMs (Most ROMS will state which modem is recommended), especially the AOSP based ones like CM9 or AOKP. For the most part they seem to be interchangeable.
I have used the UCLE2 and UCLF3 baseband modems with no issues (I believe UCLF3 is the RAT unlocked rogers modem..).
Right now I am using the latest AT&T modem UCLF5, with CyanogenMod 9 (7/02/2012 nightly) and it seems to work just fine.
Are you able to get 4G with your setup?
Thanks for your response, Rabidsmurf
Heeter
Yes, although the phone is somewhat misleading, at least in CM9
The icon will show 3G until in use when it switches to H, I assume this is for power savings or something. Download the speedtest.net app to confirm. On 4G i get around 8Mb/s down and 2.5 Mb/s up.
Additionaly what Rogers calls 4G is HSPA+, if you go to About Phone > Status under mobile network type it should say HSPAP:15 (That is HSPA+ 4G on rogers), conversely 3G is UMTS:3. My phone flips between the two as I mentioned when not in use or in use, could be a ROM specific thing.
Heeter said:
Hi all.
I just finished picking up my sgs2lte. Really excited about it. I just finished rooting it and now I would like to install an ICS 4.0.4 rom.
My specs are:
SGH-I727R
Android 2.3.5
Baseband I727RUXKJ7
Kernel 2.6.35.11
Build GB.RUXKJ7
I am hoping someone can assist me with this.
What is the best baseband for rogers?
What is the biggest sdcard that I can buy for it? I heard that this device can now accept 64 class10 sdcards, is this true?
Thanks all,
Heeter
Click to expand...
Click to collapse
Hi
Sent from my SAMSUNG-SGH-I727 using Tapatalk 2
RabidSmurf said:
Yes, although the phone is somewhat misleading, at least in CM9
The icon will show 3G until in use when it switches to H, I assume this is for power savings or something. Download the speedtest.net app to confirm. On 4G i get around 8Mb/s down and 2.5 Mb/s up.
Additionaly what Rogers calls 4G is HSPA+, if you go to About Phone > Status under mobile network type it should say HSPAP:15 (That is HSPA+ 4G on rogers), conversely 3G is UMTS:3. My phone flips between the two as I mentioned when not in use or in use, could be a ROM specific thing.
Click to expand...
Click to collapse
Well, mine was saying 4G before the rooting with the factory settings,
But it says UMTS:3 on there now.
I will install CM9, maybe that will make the difference, I just installed the ATT UCLF5 radio, still 3G
Heeter
What ROM are you using?
If it's SKY ICS, in my experience it will always say 4G no matter what (Unless it's LTE maybe).
If you see UMTS:3 try to open an APP that has constant network demands, it might switch while you're looking at it in the status to HSPAP:15, sometimes it's tough to catch it as the phone seems to go idle as soon you go into the menus
I am also in Edmonton by the way.
Hi Rabidsmurf
Was mistakingly on the Chimera rom, but I just reformatted everything and now is using this SKY ICS 4.2F6 with the UXCLF3 radio, now I am getting the 4G signal
Thanks sooo much for helping me out.
Right on, cool, fellow Edmonton dude.
Heeter
No problem.
I was also going to suggest reviewing your APN settings if all else failed. Found a typo earlier with the APN that comes with CM9 rom (caused MMS to not work), guess that's why it's still an Alpha.
RabidSmurf said:
No problem.
I was also going to suggest reviewing your APN settings if all else failed. Found a typo earlier with the APN that comes with CM9 rom (caused MMS to not work), guess that's why it's still an Alpha.
Click to expand...
Click to collapse
lol actually its at the level of an RC, but I digress
I'm using the I727RUXLF3 Baseband on AOKP Build 40 in the Edmonton area as well and it's running great. I see the same behaviour with the switching between 3G/H signal.

[Q] Which Radio for AWS on CM10.1?

Hi
I just bought an unlocked i727 (AT&T Skyrocket). In addition to unlocking it, the previous owner also modded the phone to work on AWS bands (HSDPA 1700/2100). I was all impressed by this feat, but now that I come to XDA, I find all the guy probably really did is flash the radio, which probably both unlocked the phone and enabled AWS (explained here: http://forum.xda-developers.com/showthread.php?t=2029650). Currently in "About phone", the Build Number is IMM76D.UCLF6 and the Baseband version says unknown.
The phone is running stock Android 4.0.4 (ICS), and I want to put on the latest CM10.1 stable build, but when I go to this page, it says I need a Jelly Bean radio: http://www.teamchopsticks.org/p/cm101-release-notes2.html
So now I'm worried that if I choose the wrong radio, I'll no longer have AWS bands, which I need since those are the only bands my carrier (Mobilicity) uses. Can someone please tell me which of the radios listed on the teamchopsticks blog I should use to keep the AWS bands on CM10? I'm guessing its the T-mobile version (UVMC6)...?
Thanks!
Edit: Alternatively, could I just install CM9 and leave the current radio as is? I don't really care if I have the latest android version, I just want to get rid of the stock AT&T rom and its associated bloatware.
Sandmonkee said:
Hi
I just bought an unlocked i727 (AT&T Skyrocket). In addition to unlocking it, the previous owner also modded the phone to work on AWS bands (HSDPA 1700/2100). I was all impressed by this feat, but now that I come to XDA, I find all the guy probably really did is flash the radio, which probably both unlocked the phone and enabled AWS (explained here: http://forum.xda-developers.com/showthread.php?t=2029650). Currently in "About phone", the Build Number is IMM76D.UCLF6 and the Baseband version says unknown.
The phone is running stock Android 4.0.4 (ICS), and I want to put on the latest CM10.1 stable build, but when I go to this page, it says I need a Jelly Bean radio: http://www.teamchopsticks.org/p/cm101-release-notes2.html
So now I'm worried that if I choose the wrong radio, I'll no longer have AWS bands, which I need since those are the only bands my carrier (Mobilicity) uses. Can someone please tell me which of the radios listed on the teamchopsticks blog I should use to keep the AWS bands on CM10? I'm guessing its the T-mobile version (UVMC6)...?
Thanks!
Edit: Alternatively, could I just install CM9 and leave the current radio as is? I don't really care if I have the latest android version, I just want to get rid of the stock AT&T rom and its associated bloatware.
Click to expand...
Click to collapse
You can't unlock the operator lock with a radio. You need both a specific radio and a specific firmware.
AWS support is not a special feature that can be enabled, afaik it's a standard function of this phone.
The Radios made specifically for this phone (Rogers & AT&T) should have full AWS support, I don't know about the others.
Also the TeamChopsticks site is mighty dated.
You should check out the official threads in General and Development.
Also these links are always good to have:
http://get.cm/?device=skyrocket
http://10.1.cmxlog.com/?device=skyrocket
http://changelog.bbqdroid.org/#/skyrocket/next
Hmmm... well do you know if its true that CM10 requires a "Jelly Bean Radio"?
Or am I better off just loading CM9? That way I shouldn't have to modify the radio, right?
Thanks!
Sandmonkee said:
Hmmm... well do you know if its true that CM10 requires a "Jelly Bean Radio"?
Or am I better off just loading CM9? That way I shouldn't have to modify the radio, right?
Thanks!
Click to expand...
Click to collapse
You could try flashing CM9, then it might even say in what radio you have.
Yes, CM10 requires a Jellybean radio.
If you flash the Rogers radio in my signature or the AT&T radio you'll still have AWS and it won't relock your phone.
There's really no reason not to flash a JB radio and CM10.1.. you're not losing out on anything by doing it.
Official JB radios:
R UXUMA7 http://forum.xda-developers.com/showpost.php?p=38195641&postcount=44
UCMC1 http://forum.xda-developers.com/showthread.php?t=2228292
CM10.1 Discussion http://forum.xda-developers.com/showthread.php?t=2138102
CM10.1 Development http://forum.xda-developers.com/showthread.php?t=2138102
Good luck!
lingowistico said:
You could try flashing CM9, then it might even say in what radio you have.
Yes, CM10 requires a Jellybean radio.
If you flash the Rogers radio in my signature or the AT&T radio you'll still have AWS and it won't relock your phone.
There's really no reason not to flash a JB radio and CM10.1.. you're not losing out on anything by doing it.
Official JB radios:
R UXUMA7 http://forum.xda-developers.com/showpost.php?p=38195641&postcount=44
UCMC1 http://forum.xda-developers.com/showthread.php?t=2228292
CM10.1 Discussion http://forum.xda-developers.com/showthread.php?t=2138102
CM10.1 Development http://forum.xda-developers.com/showthread.php?t=2138102
Good luck!
Click to expand...
Click to collapse
AWS band in HSDPA (or HSPA+) is not enabled in at&t or Roger's radios,since those 2 networks don't use it for HSDPA.. It's used for LTE (700,1700/2100)
AWS 1700/2100 band in HSDPA can be enabled by flashing T-Mobile blaze JB radio...It should work on cm10.1 since it is a JB radio...
So I spent pretty much all of yesterday reading up on the subject. Since we were under a tornado watch all day anyways, I really had nothing else to do!
After a while, I found the "secret codes" (listed here: http://forum.xda-developers.com/showthread.php?t=1492700), and punched in *#1234#. This told me that my radio was "T769-UVLB7", which I believe is the 4th one from the bottom on this page: http://forum.xda-developers.com/showthread.php?t=1895400, ie the Blaze radio. That would make sense because it gels with my Android version (4.0.4). Anyways, googling that radio eventually led me to this link: http://forum.xda-developers.com/showthread.php?t=1507825 which had a ton of useful information. So thats the radio mystery solved.
From the same info screen, I could see that my ROM was i727-UCLF6, a somewhat outdated stock ICS rom. So now I know what my phone's current status is in case I need to bring it back because my other combinations don't work for some reason.
So I think I've decided to go with the Pacman JB rom (http://forum.xda-developers.com/showthread.php?t=2178402) and if it doesn't work with my current radio, I'll first try the updated Blaze radio, UVMB1, listed third in that same list I linked to above. If that doesn't work, I'll try the others in that list until I get a combination that does (probably starting with UCMC1). I'm also considering the Jedi Mind Trick T989 rom (http://forum.xda-developers.com/showthread.php?t=1818305). I'll post results when I have them!
Thanks for the help everyone!
mahanddeem said:
AWS band in HSDPA (or HSPA+) is not enabled in at&t or Roger's radios,since those 2 networks don't use it for HSDPA.. It's used for LTE (700,1700/2100)
AWS 1700/2100 band in HSDPA can be enabled by flashing T-Mobile blaze JB radio...It should work on cm10.1 since it is a JB radio...
Click to expand...
Click to collapse
So what you're saying is: AWS for LTE is enabled in Rogers and AT&T, but, it's disabled for HSPA by default.
I was under the impression that 2100 is used for 3G/HSPA by default eitherway, but you're saying it's not?
mahanddeem said:
AWS band in HSDPA (or HSPA+) is not enabled in at&t or Roger's radios,since those 2 networks don't use it for HSDPA.. It's used for LTE (700,1700/2100)
AWS 1700/2100 band in HSDPA can be enabled by flashing T-Mobile blaze JB radio...It should work on cm10.1 since it is a JB radio...
Click to expand...
Click to collapse
Didn't notice any difference after flashing Blaze LB7 radio. Vodafone has 2100 for 3G/HSPA. Already had full signal with RUXUMA7 and it was still full with LB7 and speed was the same (3.7Mbit down/2.6Mbit up)..
lingowistico said:
Didn't notice any difference after flashing Blaze LB7 radio. Vodafone has 2100 for 3G/HSPA. Already had full signal with RUXUMA7 and it was still full with LB7 and speed was the same (3.7Mbit down/2.6Mbit up)..
Click to expand...
Click to collapse
Skyrocket
2G 850/900/1800/1900
3G 850/1900/2100
4G(LTE) 700/1700/2100
http://m.gsmarena.com/samsung_galaxy_s_ii_skyrocket_i727-4303.php
Blaze
2G 850/900/1800/1900
3G 850/1700/1900/2100
4G(LTE) (none)
http://m.gsmarena.com/samsung_galaxy_s_blaze_4g_t769-4420.php
I would recommend you do more reading and reading before you mess with the radio flashing
Good luck
---------- Post added at 04:35 PM ---------- Previous post was at 04:18 PM ----------
lingowistico said:
So what you're saying is: AWS for LTE is enabled in Rogers and AT&T, but, it's disabled for HSPA by default.
I was under the impression that 2100 is used for 3G/HSPA by default eitherway, but you're saying it's not?
Click to expand...
Click to collapse
AWS (Advanced Wireless Service) protocol uses the 2100 for downlink
and the 1700 for uplink..
http://en.m.wikipedia.org/wiki/Advanced_Wireless_Services
The skyrocket has the 2100 in 3G and LTE
but 1700 is not enabled in 3G
Hence the AWS band (UMTS band 4) is not supported in 3G
mahanddeem said:
...
Click to expand...
Click to collapse
Thank you for explaining this, I didn't know all the specifics.
You are correct, the Blaze radio disables LTE and enables AWS.
As you can see here 1700 is not in use in Europe. So the Blaze JB radio is of no use to me.
So in the end, the Pacman JB 4.2.2 ROM worked without a hitch. I did not have to flash the radio at all, it is still working as before.
Baseband still shows up as unknown (the nifty secret codes no longer work), and kernel is now 3.0.72 cyanogenmod.
The phone's working greatI love it when a plan comes together!
What speeds do you get currently on speed test app ?
If your goal is a rom with no bloatware you can debloate a stock tw one...Personally I can never live with cm camera...
At the moment, only about 1.5 MBps, but I am not in a good service area. Even so, everything seems to load quickly.
My only complaints so far would be the ROM itself... already crashed a couple of times, and it has a bizarre way of connecting to the computer (no USB storage mode).
mahanddeem said:
AWS band in HSDPA (or HSPA+) is not enabled in at&t or Roger's radios,since those 2 networks don't use it for HSDPA.. It's used for LTE (700,1700/2100)
AWS 1700/2100 band in HSDPA can be enabled by flashing T-Mobile blaze JB radio...It should work on cm10.1 since it is a JB radio...
Click to expand...
Click to collapse
So it turns out that it may noit have been the ROM after all, but GO Launcher. Everytime I get a new phone, I get sucked in by GO Launcher's sexy looks, but the result is always the same: lagginess and crashes. After switching to Apex launcher, things seem to have settled down.
In terms of the radio, I did some more traveling around today and I would have to say that reception is not as good as it is on my AWS Nexus S, so I might try some different radios after all. Just want to confirm though that if I use an i727 radio (like UCMC1) instead of a T989 radio (like the Blaze radio), I will no longer have access to AWS. Is that right?
Right now I'm thinking UVMB1 from here might be the first stop: http://forum.xda-developers.com/showthread.php?t=1895400
If you ask me , TW stock debloated and tweaked by me is my and always be my rom ...
For the reception, if you have to have the best reception for a network that uses AWS 1700/2100mhz bands for HSDPA/HSPA+ , the skyrocket is not your phone...Or you have to live with issues every now and then...
That's why your nexus s(the T version) has better reception it's a device with native 1700/2100 band support...
Try some other T mobile radios from the blaze,Hercules or galaxy note 1 (remeber you have to use jellybean radios with any jeallybean based rom) and see what gives you best reception, but again don't expect miracles...
Or another note, try a stock jb uvmc6 rom (flash a skyrocket kernel for the roation problem) and uvmc6 radio or another T-Mobile radio as a combo if it is better regarding general network performance...
Edit: answering your question,yes ..skyrocket or Roger's modem will not have 1700/2100 AWS HSPA connectivity...And that "first stop" was my first advice for you...UVMB1 radio...
mahanddeem said:
If you ask me , TW stock debloated and tweaked by me is my and always be my rom ...
Click to expand...
Click to collapse
Hey mahanddeem,
Thanks again for the help. Even after removing Go Launcher, I'm still getting a few random reboots/shutdowns per day - enough to annoy me. I did some searching and found out about the sticky button issue, but I have a feeling thats not my problem. Usually when the phone shuts down on its own, I have to remove the battery before the phone will turn on again. I'm not completely discounting the possibility that I have a sticky button, it just seems odd that the solution involves pulling the battery. That makes it seem more like a software/Rom issue to me, so I'm thinking of going back to a TW-based rom, but I don't want to restore my original stock with all its extra bloat-ware. All that to say that I was hoping you could tell me which de-bloated TW Rom you are using. I've found Embryo, which looks interesting: http://forum.xda-developers.com/showthread.php?t=2074328. Is that what you have?
Or another note, try a stock jb uvmc6 rom (flash a skyrocket kernel for the roation problem) and uvmc6 radio or another T-Mobile radio as a combo if it is better regarding general network performance...
Click to expand...
Click to collapse
Thanks for the suggestion. I'm trying to avoid a full stock ROM, mostly because of the bloatware and branding (I can't stand seeing a corporate logo every time I start my phone!) - this is basically the reason I put a custom ROM on in the first place - plus the extra control of course. If this is the only thing that will stop my phone from randomly rebooting and shutting down though, then I'll have to consider it. Hopefully the stripped down TW version that you recommend will help though.
Edit: answering your question,yes ..skyrocket or Roger's modem will not have 1700/2100 AWS HSPA connectivity...And that "first stop" was my first advice for you...UVMB1 radio...
Click to expand...
Click to collapse
Heh heh true enough I still haven't tried flashing anything - I'm still educating myself. The last thing I want to do is start something I can't recover from!
Sandmonkee said:
Hey mahanddeem,
Thanks again for the help. Even after removing Go Launcher, I'm still getting a few random reboots/shutdowns per day - enough to annoy me. I did some searching and found out about the sticky button issue, but I have a feeling thats not my problem. Usually when the phone shuts down on its own, I have to remove the battery before the phone will turn on again. I'm not completely discounting the possibility that I have a sticky button, it just seems odd that the solution involves pulling the battery. That makes it seem more like a software/Rom issue to me, so I'm thinking of going back to a TW-based rom, but I don't want to restore my original stock with all its extra bloat-ware. All that to say that I was hoping you could tell me which de-bloated TW Rom you are using. I've found Embryo, which looks interesting: http://forum.xda-developers.com/showthread.php?t=2074328. Is that what you have?
Thanks for the suggestion. I'm trying to avoid a full stock ROM, mostly because of the bloatware and branding (I can't stand seeing a corporate logo every time I start my phone!) - this is basically the reason I put a custom ROM on in the first place - plus the extra control of course. If this is the only thing that will stop my phone from randomly rebooting and shutting down though, then I'll have to consider it. Hopefully the stripped down TW version that you recommend will help though.
Heh heh true enough I still haven't tried flashing anything - I'm still educating myself. The last thing I want to do is start something I can't recover from!
Click to expand...
Click to collapse
I take it you don't know how to root a stock Rom and delete the bloatware yourself?
Sent from my SAMSUNG-SGH-I727 using Tapatalk 4 Beta
I'm pretty sure I could root it, that much seems within my limited skill set. But first determining HOW to remove the bloatware, and then WHICH things I can safely remove... That I'm not sure of. Besides, if there are already ROM's out there that have done this, why would I duplicate the effort? I'm all in favour of doing things just so I can learn how to do them, but the fact is I have other things I need to do with my time besides fiddling with my phone (family, work, motorbike.... and seemingly endless friggin yardwork!)
Sandmonkee said:
I'm pretty sure I could root it, that much seems within my limited skill set. But first determining HOW to remove the bloatware, and then WHICH things I can safely remove... That I'm not sure of. Besides, if there are already ROM's out there that have done this, why would I duplicate the effort? I'm all in favour of doing things just so I can learn how to do them, but the fact is I have other things I need to do with my time besides fiddling with my phone (family, work, motorbike.... and seemingly endless friggin yardwork!)
Click to expand...
Click to collapse
It's very simple, there are plenty of ways to remove bloat, plenty of guides to do it, and charts that show what things are and if you should remove them.
Embryo would be a nightmare for you. Read the thread. If you don't have the time to research and learn, you should not be flashing things on your phone.
Sent from my SAMSUNG-SGH-I727 using Tapatalk 4 Beta
Do your researches, it's not gonna happen that anyone here would put a long extensive guide for you so you can "take a look" at it during your coffee time...
Everybody here is learning everyday from others' posts, problems and discussions...So either you put some effort into learning or nobody's gonna spoon feed you..
As a clue , look at Mohan deodexed stock UCMC1,flash,root,start freezing apps that you know you'll not use...Then using any root explorer you can permanently uninstall system apps...And by the way you can use a custom boot animation even on stock,search for how to...

? How to get LTE speed on US LTE tablet running ROW LTE Image?

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.

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