Database Develop

3G in the USA

Has any been able to get 3G to work in the USA yet?
thank you,
jdm

I would say that it is imminent that the US version of the S730 will be released soon. AT&T or T-Mobile may pick it up (T-Mobile's 3G network in NYC just went live, but there are no phones). If so, I would suspect that some of these crafty folks (like Alcaline) would be able to extract the radio ROM, and make it available for the S730 that we all have (the european version).
But, here's the most important part... It all depends on whether or not the European version of the S730 has the radio chipsets that will support 3G on the frequencies that are 3G in the US. There is no known answer "available" to this, so it can only be discovered by testing.

The current S730 uses the 2100 band for 3G speeds and ATT is deploying 3g on 1900 and 850 I believe and they sell a decent ammount of 3g phones. T-Mobile is working on setting one up on the 1700/2100 band but I dont care for T-Mobile.
I have watched my phone at times flip into 3G mode for a few minutes then revert back to Edge, its trying but cant work properly without the right frequencies.

Check out the chipset datasheet. Bottom of page three explains the specific radio chipset combos and their support for different freqs.
I suppose, to save on manufacturing costs, they could have used the single chipset that supports 3G on all freqs (RTR 6285), but I believe this is unlikely due to the difference in model number that was submitted to the FCC (European version: WING220, US version: WING200).
Who knows though.

3G in US
Hermes models had different model #'s HERM100, HERM200 and had the same radios, in some cases minor difference such as case style, i.e removal of video calling camera etc. With any luck we have the RFR6500 + RTR6275 Combo, or as you mentioned the RTR6285 and just not a radio rom that allows 1900+850 3G. I was looking on the FCC site and they have some interesting screen shots, one of which shows one(s730) with what appears to be the front camera covered up and another which shows a radio rom(R 0.27.03.05B), one that, to do the tests would likely need to support 1900+850. Check Page 250 / 11 in the PDF. However, also in the test is the lack of any mention of 2100 Mhz test, which would suggest that either the US 3G Radio won't support 2100Mhz or that it indeed has different hardware that won't support 2100Mhz. At any rate it would be interesting to know if anyone has tried to flash one of the pre-prod roms for the wing 200 onto the wing220 and see if they are able to connect up to 1900+850 3G.
http://gullfoss2.fcc.gov/prod/oet/forms/blobs/retrieve.cgi?attachment_id=890469&native_or_pdf=pdf
I suppose only time will tell.

Wow... nice investigative work. Very interesting. I'll start hunting around for the ROM.
[edit]
Searched google and, my favorite, napalm with no luck. I wonder if we can lure an FCC testing engineer into the XDA-dev realm. muahahaha

I was searching some of the other posts, and it appears that most of the pre-prod radio rom testing had been focused on GPS functionality. Has anyone been able to throw on any of the pre-prod radios with an ATT SIM and tested to see if it can connect to WCDMA -> US Band (1900+850) ??

I have no possibility to check the 3G in the USA from my location in Norway.
But just to get this clear, because I have changed my Radio more often then most people change their underweare.
Is everybody able to select WCDMA and then US Band in the settings?
I dont know if this is selectable on all devices or if this is made available after my radio flahings.

I believe all S730's have the following options available.
Network Type:
Auto
GSM
WCDMA
Band Type:
Auto
US Band
Euro Band
Japan Band
For it to actually be able to operate on all of these frequencies I believe it would need to use the the RTR6285 chipset as the other 2 combos would not support all of the different frequencies combinations.
US Band -> GSM 850+1900 / UMTS 850+1900 (ATT)
Euro Band -> GSM 900+1800 / UMTS 2100
Japan Band -> UMTS 2100+800 (not positive on this one)
If I change band to from Auto -> WCDMA I do not get an error but no 3G Icon and all calls fail. If I then go and change to US Band while having WCDMA selected it indicates that it cannot change to that GSM/UMTS Band. Also interesting, If I stay on WCDMA and select Euro Band, no error, but of course all calls fail. I then tried to change to Japan Band, no error and no phone calls. Finally I am still on WCDMA and I switch to US Band and I get the error that indicates I cannot change to that band. So, I would be interested to know Alcaline if you see the same behavior on some of the other radios you have been trying to see they allow the switch to WCDMA / US Band combo.
Thanks

Can anyone else confirm this behavior on any of the other Radios out there?

Alcaline said:
I have no possibility to check the 3G in the USA from my location in Norway.
But just to get this clear, because I have changed my Radio more often then most people change their underweare.
Is everybody able to select WCDMA and then US Band in the settings?
I dont know if this is selectable on all devices or if this is made available after my radio flahings.
Click to expand...
Click to collapse
I have the ability to tell my phone I am in the states, but it does nothing (default settings though)

Was the US version (WING200) of this phone ever released? Or has anyone gotten the EU version to work on any US 3G networks? Wondering about T-Mobile...

N5 hidden Field Test Mode

Root method found to change settings without MSL, download v2.0 of the app from the Play Store to use
I was looking at a way to enable CDMA on my N5, and stumbled onto a little file called "SprintHiddenMenu.apk" that comes on every phone it appears (at least the North American model).
It has the following "secret codes" defined for the dialer. I couldn't get them to show up, but I tried with a GSM sim card:
It looks like it only works SIM serial number starting with "8901120" (bypassed, see edit for details)
The below either have to be dialed via *#*#<number>#*#* or ##<number># (I can't test, since I don't have a Sprint UICC card)
I have no idea what these do, only that there is code to handle them. They may cause your phone to be bricked, so don't just enter them randomly and see what happens
33284 - Unknown (field test mode?)
3282 - Something to do with mmsc/evdo/forceLTE settings
786 - RTN settings (reset?)
72786 - Something also having to do with reset?
675 or 68575 - Something to do with changing MSL/MSID
8378 - Something to do with SPC test/check
There also seems to be a built in field test mode for CDMA/LTE (first code seems to access it). It provides info such as sector id/color code/channel/rx-txt power for CDMA and serving cell/EARFCN/plmn id/etc for LTE.
There are also details for 1xRTT, eHRPD, etc
This could possibly be the first Nexus device equipped with a proper field test mode, albeit Sprint only. I also see the LG has very tight integration into the RIL, with their proprietary extensions being used for some aspects of RIL operations.
EDIT:
Found a way to start Field Test mode manually, bypassing the UICC serial check
start adb shell and type:
Code:
am start -n com.lge.SprintHiddenMenu/.sprintspec.Debug
The above works for *any* LTE network, even if you register on it. For example, I can camp and Rogers (Canada) and get all the info I want (especially DL channel and band 4):
{
"lightbox_close": "Close",
"lightbox_next": "Next",
"lightbox_previous": "Previous",
"lightbox_error": "The requested content cannot be loaded. Please try again later.",
"lightbox_start_slideshow": "Start slideshow",
"lightbox_stop_slideshow": "Stop slideshow",
"lightbox_full_screen": "Full screen",
"lightbox_thumbnails": "Thumbnails",
"lightbox_download": "Download",
"lightbox_share": "Share",
"lightbox_zoom": "Zoom",
"lightbox_new_window": "New window",
"lightbox_toggle_sidebar": "Toggle sidebar"
}
Enjoy
FInding #2. Configuration Editor
start adb shell and type:
Code:
am start -n com.lge.SprintHiddenMenu/.sprintspec.Data
Apparently, you can enable/disable LTE and bands individually ( Band 26 and 41 disabled).
A few options/features of note (there are many menus):
Enable/disable eHRPD
View data settings for Sprint CDMA network
See ESN/MEID/Home NID and SID
Some of these seem dangerous, especially any "edit" option or "device self service."
App to do all the above
I have created an app to launch this more easily.

I ask this out of ignorance: what implications does this discovery have?

jxr94 said:
I ask this out of ignorance: what implications does this discovery have?
Click to expand...
Click to collapse
Well there are two:
1. It lets you mess with hidden Sprint settings without having to have Sprint do it.
2. It lets you get info about the LTE network you are connected to (like the frequency). So you can tell which bands are being used in various regions/buildings/etc. Basically, for networks geeks.

This is awesome! Was always jealous of Samsung's service menus.
---------- Post added at 10:49 PM ---------- Previous post was at 10:22 PM ----------
I wonder if this exists for GSM as well. Too bad this menu doesn't list the channel width.

bioyuki said:
This is awesome! Was always jealous of Samsung's service menus.
---------- Post added at 10:49 PM ---------- Previous post was at 10:22 PM ----------
I wonder if this exists for GSM as well. Too bad this menu doesn't list the channel width.
Click to expand...
Click to collapse
I couldn't find any reference to GSM or UMTS inside the app. Keep in mind this was exclusively created for Sprint. We're just lucky it works on any LTE network. They purposely put that SIM serial checking in place so that it ensured it was only used on Sprint.
Yeah, channel width would be nice. I didn't see it anywhere in the menus, so looks like we're out of luck unless I missed it. Personally, I'm more than happy that even the info provided in those screens is there.

With Sprint, top three I'm pretty familiar with. The bottom two are new to me and seem unnecessary to mess with.
*#*#DATA#*#* (3282) - CDMA Data programming, obviously. With MSL allows you to turn on/off LTE Band 41(2.5Ghz) and LTE Band 26(800Mhz) along with other things.
*#*#DEBUG#*#* (33284) - Lets you see all the radio information. Which band you are connected to, serving cell, power levels, SNR, Ec/Io, which freq channel on uplink/downlink.
*#*#SCRTN#*#* (72786) - This does a complete re-activation, resetting the modem, your profile, and PRL. Phone reboots.
*#*#675#*#* and *#*#68575#*#* - Seems to just let you view MDN and MSID and set only MDN. Probably not wise to mess with.
*#*#8378#*#* - 1x Diversity, EvDo Diversity, MRD, and EVRC_B settings. No idea what these are.

zivan56 said:
I have created an app to launch this more easily.
Click to expand...
Click to collapse
For your app also add *#*#4636#*#* which is the dialer code to access radio profiles (LTE/CDMA , LTE /GSM, etc).
Good shortcuts to the dialer area and will recommend to others over @ s4gru.

Interesting thing I noticed this morning, the phone will search through all bands (1/2/4/5/17/19/25/26/41) when there is no reception. This seems hugely inefficient, shouldn't the radio know, I'm currently on T-Mo, only search for band 4, or I'm currently on Sprint, only search through bands 25, 26 and 41

lilotimz said:
For your app also add *#*#4636#*#* which is the dialer code to access radio profiles (LTE/CDMA , LTE /GSM, etc).
Good shortcuts to the dialer area and will recommend to others over @ s4gru.
Click to expand...
Click to collapse
I'll add it tonight. My main point for the app (for starters) was to launch the test mode on non-Sprint devices, since it checks the SIM serial number and blocks launching via the dialer. I'll try to find a few more pages and add them to be launched as well.
bioyuki said:
Interesting thing I noticed this morning, the phone will search through all bands (1/2/4/5/17/19/25/26/41) when there is no reception. This seems hugely inefficient, shouldn't the radio know, I'm currently on T-Mo, only search for band 4, or I'm currently on Sprint, only search through bands 25, 26 and 41
Click to expand...
Click to collapse
I don't believe there is any way for the phone to know. The SIM card doesn't carry any information about the bands used. It is basically up to the phone to discover.
The LTE scan is lightning fast for me though, about 3-5 secs at most to scan all those. Compared to an UMTS scan which takes a good 20-30 seconds.

zivan56 said:
I don't believe there is any way for the phone to know. The SIM card doesn't carry any information about the bands used. It is basically up to the phone to discover.
The LTE scan is lightning fast for me though, about 3-5 secs at most to scan all those. Compared to an UMTS scan which takes a good 20-30 seconds.
Click to expand...
Click to collapse
The phone knows the MCC and MNC, that should be enough for it to filter out which bands to search.

Great find! Thanks for sharing.

bioyuki said:
The phone knows the MCC and MNC, that should be enough for it to filter out which bands to search.
Click to expand...
Click to collapse
well, does the SIM card store that info somewhere, or some standard in the GSM/CDMA/? that allows the phone to query the network which bands to scan for?
bands update all the time (t-mobile refarming AWS for LTE instead of 2G/3G). you can roam to another network's LTE band. if the standard doesn't give you a way to store/query that info, you can't just hardcode on the ROM/baseband "only look at bands 6-9 for MCC 310 MNC 410" (which is at&t's network)

Yes, the bands used by a provider are dynamic, so it would be a hard feature to implement for relatively little savings.
For example, AT&T has band 4 LTE only in rare markets, how would the SIM know? Store a list of LTE TACs?
lilotimz said:
For your app also add *#*#4636#*#* which is the dialer code to access radio profiles (LTE/CDMA , LTE /GSM, etc).
Good shortcuts to the dialer area and will recommend to others over @ s4gru.
Click to expand...
Click to collapse
Ok, it has been done in version 1.5...should be hitting the market very soon.

DIAG MODE
Hi!
In Nexus 5,
Do not have the diag mode?
there is no way into diag mode in Nexus 5

In theory diag mode is there and can be activated same was as Nexus 4. The problem is the USB subsystem goes crazy when you attempt to and ends up as an unrecognized USB device until you restart the device.

zivan56 said:
In theory diag mode is there and can be activated same was as Nexus 4. The problem is the USB subsystem goes crazy when you attempt to and ends up as an unrecognized USB device until you restart the device.
Click to expand...
Click to collapse
yes,my n5 acts the same

Any chance of seeing the DL Channel bandwidth? I get only DL channel 1780 on band 3.

Has anyone attempted editing build.prop ro.build.user value from "user" to "dev" or something else to see if that opens up any further dialer codes or prevents the reboot situation reported when trying the nexus 4 methods?

About the Band 41
hello
I am a China Mobile customer
China Mobile's 4G is TDD-LTE and use the band 38 (wich is included in band 41)
Now the band 41 is closing by Default setting.
I install your APP, when i want edit the LTE information
The APP ask me the "Service code"
So what is the "Service code"?
Do I need a Sprint SIM card if I want to edit the LTE info. I mean open the band 41
THX

guoting2409 said:
hello
I am a China Mobile customer
China Mobile's 4G is TDD-LTE and use the band 38 (wich is included in band 41)
Now the band 41 is closing by Default setting.
I install your APP, when i want edit the LTE information
The APP ask me the "Service code"
So what is the "Service code"?
Do I need a Sprint SIM card if I want to edit the LTE info. I mean open the band 41
THX
Click to expand...
Click to collapse
http://forum.xda-developers.com/showthread.php?t=2515798
take a look at this thread, the MSL code is the service code the phone is asking for.
I haven't use Sprint for a long time, so I don't know if you need a sim from Sprint to change anything, but you can give it a try and report back

[Q] GSM vs CDMA developer edition

The "specs" of the two phones are:
GSM
Bluetooth® Technology 1
4.0 LE + EDR
Wi-Fi
802.11a/g/b/n/ac (dual band capable), mobile hotspot
Networks
GSM/GPRS/EDGE - UMTS/HSPA + up to 42 Mbps - 4G LTE
2G/2.5G GSM/GPRS/EDGE bands
850/900/1800/1900 MHz
3G UMTS bands
850/900/ AWS/1900/2100 MHz with HSPA+ up to 42 Mbps (B5/B8/B4/B2/B1)
4G LTE bands
700/AWS/1900MHz (B17/B4/B2)
CDMA
Bluetooth® Technology 1
4.0 LE + EDR
Wi-Fi
802.11a/g/b/n/ac (dual band capable), mobile hotspot
Networks
GSM/GPRS/EDGE - UMTS/HSPA + up to 42 Mbps - CDMA/EVDO Rev. A - 4G LTE
2G/2.5G GSM/GPRS/EDGE bands
850/900/1800/1900 MHz
3G UMTS bands
850/900/1900/2100 MHz with HSPA+ up to 42 Mbps (B5/B8/B2/B1)
3G CDMA bands
EVDO Rev. A: 850/1900 MHz (BC0/BC1)
4G LTE bands
750 MHz (B13)
Based on these specs, the difference seems to be in the 4G LTE bands and the CDMA version lacks UMTS B4. Both support GSM.
If I believe the specs, inserting a GSM sim in a CDMA unlocked moto s (developer edition) should give me the same GSM coverage as the GSM phone for voice....and for 3G data, as long as it's not on B4. I should not get any 4G LTE. But I wonder if I should really believe the specs because it almost makes no sense for motorola to have created two different chips/loads for the phones. What would happen if I put the t-mobile or ATT oem load on a CDMA unlocked phone? would it even work? would I really not get LTE since GSM LTE doesn't use 700mhz?
Any thoughts. There doesn't seem to be anyone at motorola who can answer the question...other than looking at the specs....
The reason for the question is I need Verizon in the US (for coverage), but GSM when travelling. I am thinking of getting a net10 sim for travel. Will it work?
(note: I posted a similar question in Q&A a few days ago, but no real response other than pointing to the specs).

ghstudio said:
The "specs" of the two phones are:
GSM
Bluetooth® Technology 1
4.0 LE + EDR
Wi-Fi
802.11a/g/b/n/ac (dual band capable), mobile hotspot
Networks
GSM/GPRS/EDGE - UMTS/HSPA + up to 42 Mbps - 4G LTE
2G/2.5G GSM/GPRS/EDGE bands
850/900/1800/1900 MHz
3G UMTS bands
850/900/ AWS/1900/2100 MHz with HSPA+ up to 42 Mbps (B5/B8/B4/B2/B1)
4G LTE bands
700/AWS/1900MHz (B17/B4/B2)
CDMA
Bluetooth® Technology 1
4.0 LE + EDR
Wi-Fi
802.11a/g/b/n/ac (dual band capable), mobile hotspot
Networks
GSM/GPRS/EDGE - UMTS/HSPA + up to 42 Mbps - CDMA/EVDO Rev. A - 4G LTE
2G/2.5G GSM/GPRS/EDGE bands
850/900/1800/1900 MHz
3G UMTS bands
850/900/1900/2100 MHz with HSPA+ up to 42 Mbps (B5/B8/B2/B1)
3G CDMA bands
EVDO Rev. A: 850/1900 MHz (BC0/BC1)
4G LTE bands
750 MHz (B13)
Based on these specs, the difference seems to be in the 4G LTE bands and the CDMA version lacks UMTS B4. Both support GSM.
If I believe the specs, inserting a GSM sim in a CDMA unlocked moto s (developer edition) should give me the same GSM coverage as the GSM phone for voice....and for 3G data, as long as it's not on B4. I should not get any 4G LTE. But I wonder if I should really believe the specs because it almost makes no sense for motorola to have created two different chips/loads for the phones. What would happen if I put the t-mobile or ATT oem load on a CDMA unlocked phone? would it even work? would I really not get LTE since GSM LTE doesn't use 700mhz?
Any thoughts. There doesn't seem to be anyone at motorola who can answer the question...other than looking at the specs....
The reason for the question is I need Verizon in the US (for coverage), but GSM when travelling. I am thinking of getting a net10 sim for travel. Will it work?
(note: I posted a similar question in Q&A a few days ago, but no real response other than pointing to the specs).
Click to expand...
Click to collapse
as far as i know. the reason I know this, is because before I figured out a way to get my Moto x (standard non dev. edition) to keep my unlmited data, I checked into getting a Blu phone.. they're GSM.. So, you can't use on verizon.. I was looking into net10 and they're GSM. So I don't see why it wouldn't work, however I never went threw with it, so please don't hold it to me.

Putting an AT&T or T-Mobile SIM in the CDMA phone, you probably wouldn't get LTE, as I don't think they share any bands with VZW for LTE. You might get HSPA+ though, depending on what bands are in use around you. You shouldn't have any issues travelling though, as most other countries use the GSM bands supported by the VZW model. So, basically, your only big issue would be getting "4G" service when in the US if you aren't using VZW.

imnuts said:
Putting an AT&T or T-Mobile SIM in the CDMA phone, you probably wouldn't get LTE, as I don't think they share any bands with VZW for LTE. You might get HSPA+ though, depending on what bands are in use around you. You shouldn't have any issues travelling though, as most other countries use the GSM bands supported by the VZW model. So, basically, your only big issue would be getting "4G" service when in the US if you aren't using VZW.
Click to expand...
Click to collapse
That's pretty much exactly what I want....if I use data at all, it could be 2g speed...my main concern is "in an emergency" phone calls. It looks like just using the phone for GSM calls is only a matter of getting a worldwide sim, or buying a local one which would work in any unlocked GSM capable phone. Now, if I decide to move to a US based GSM carrier, that's a different story where data is important.
I doubt that the hardware in the phones differs at all....just the enablement of the radios/bands. I would bet there is a way to turn on all the GSM bands on a CDMA phone...although it may not be accessible to customers.
I'm going to try a GSM Sim in the phone in the US and see what I can do (or not do).
Thanks.

The hardware is most certainly different. The parts are not installed to do CDMA in a GSM developer edition, and the parts are not installed to add additional bands with a simple firmware hack.

I have verizon for personal, and one work line, and T-Mobile USA as another work line.
When I first got my Developer Edition Moto X for Verizon, and it had 4.2.2, I could put my T-Mobile US SIM in, it received APN settings and worked, at Edge speeds.
After the Kit Kat update, putting my T-Mobile US SIM in I got message that I had an unsupported sim installed which also stayed in the notification pull down, and I had to manually enter the APN settings for T-Mobile to get working voice/data. Again I got Edge speeds. However MMS didn't work but this could have been due to incorrect APN settings.
Just now, I tried and while I got a pop up unsupported SIM message, but it didn't stay in the notification area, and I did get EDGE data, with emails coming in and apps updating from the play store. When I went under Settings - Mobile Network - Access Point names, nothing is filled in. Trying to create and save one, it doesn't appear either. After a few minutes, I got 4G LTE in the notification area. Under Settings -> About Phone -> Status. It shows LTE (without band number). While it shows ICCID (sim card number), it says Unknown under My Phone Number and Min. Data works, Speed test gives me 28Mbps down and 7Mbps up, but also received intermittent "network communication issues" during the upload tests. Dropbox auto uploads fine as I took a picture with the X and my PC notified me of a new dropbox file. While SMS send/receive and voice calls work, MMS send doesn't.
As for the network communication issues... I saw the same thing when using my VZW iPhone 5S which does support more bands than the VZW X, at least comparing Apple and Moto's web sites. I see the iPhone 5S switch between HSPA and LTE when using the T-Mobile SIM.
In my area it appears T-Mobile has re-farmed their 1900Mhz to HSPA

KidJoe said:
I have verizon for personal, and one work line, and T-Mobile USA as another work line.
When I first got my Developer Edition Moto X for Verizon, and it had 4.2.2, I could put my T-Mobile US SIM in, it received APN settings and worked, at Edge speeds.
After the Kit Kat update, putting my T-Mobile US SIM in I got message that I had an unsupported sim installed which also stayed in the notification pull down, and I had to manually enter the APN settings for T-Mobile to get working voice/data. Again I got Edge speeds. However MMS didn't work but this could have been due to incorrect APN settings.
Just now, I tried and while I got a pop up unsupported SIM message, but it didn't stay in the notification area, and I did get EDGE data, with emails coming in and apps updating from the play store. When I went under Settings - Mobile Network - Access Point names, nothing is filled in. Trying to create and save one, it doesn't appear either. After a few minutes, I got 4G LTE in the notification area. Under Settings -> About Phone -> Status. It shows LTE (without band number). While it shows ICCID (sim card number), it says Unknown under My Phone Number and Min. Data works, Speed test gives me 28Mbps down and 7Mbps up, but also received intermittent "network communication issues" during the upload tests. Dropbox auto uploads fine as I took a picture with the X and my PC notified me of a new dropbox file. While SMS send/receive and voice calls work, MMS send doesn't.
As for the network communication issues... I saw the same thing when using my VZW iPhone 5S which does support more bands than the VZW X, at least comparing Apple and Moto's web sites. I see the iPhone 5S switch between HSPA and LTE when using the T-Mobile SIM.
In my area it appears T-Mobile has re-farmed their 1900Mhz to HSPA
Click to expand...
Click to collapse
So you picked up t-mobile LTE with a verizon phone using the t-mobile sim??? If the bands are preset as in the specs, that can't happen
Why do you think that happpened?? Perhaps the CDMA version isn't limited to 750mhz/band 13.

ghstudio said:
So you picked up t-mobile LTE with a verizon phone using the t-mobile sim??? If the bands are preset as in the specs, that can't happen
Why do you think that happpened?? Perhaps the CDMA version isn't limited to 750mhz/band 13.
Click to expand...
Click to collapse
Band 4 LTE is also supported on the verizon phone...I don't know if that's why the t-mobile sim picked up lte or not but LTE is 13 and 4 on the verizon variant.

ghstudio said:
So you picked up t-mobile LTE with a verizon phone using the t-mobile sim??? If the bands are preset as in the specs, that can't happen
Why do you think that happpened?? Perhaps the CDMA version isn't limited to 750mhz/band 13.
Click to expand...
Click to collapse
Yes. With the T-Mobile SIM inserted into my VZW X, the "signal indicator" in the Status bar area showed 4GLTE, and under settings -> About Phone -> Status.. Mobile Network Type reported LTE.
It was thought that VZW had enabled LTE Band 4 with the Kit Kat update on the X, like Verizon did with a recent update to the Galaxy S4. I've seen a few posts here, and on other forums asking for confirmation, how can someone tell what LTE band their X is using, and such... but no definate answer.
T-Mobile's LTE is band 4 in some areas.

ghstudio said:
The reason for the question is I need Verizon in the US (for coverage), but GSM when travelling. I am thinking of getting a net10 sim for travel. Will it work?.
Click to expand...
Click to collapse
yes, it will work for talk and text but maybe not for LTE.

KidJoe said:
I have verizon for personal, and one work line, and T-Mobile USA as another work line.
When I first got my Developer Edition Moto X for Verizon, and it had 4.2.2, I could put my T-Mobile US SIM in, it received APN settings and worked, at Edge speeds.
After the Kit Kat update, putting my T-Mobile US SIM in I got message that I had an unsupported sim installed which also stayed in the notification pull down, and I had to manually enter the APN settings for T-Mobile to get working voice/data. Again I got Edge speeds. However MMS didn't work but this could have been due to incorrect APN settings.
Just now, I tried and while I got a pop up unsupported SIM message, but it didn't stay in the notification area, and I did get EDGE data, with emails coming in and apps updating from the play store. When I went under Settings - Mobile Network - Access Point names, nothing is filled in. Trying to create and save one, it doesn't appear either. After a few minutes, I got 4G LTE in the notification area. Under Settings -> About Phone -> Status. It shows LTE (without band number). While it shows ICCID (sim card number), it says Unknown under My Phone Number and Min. Data works, Speed test gives me 28Mbps down and 7Mbps up, but also received intermittent "network communication issues" during the upload tests. Dropbox auto uploads fine as I took a picture with the X and my PC notified me of a new dropbox file. While SMS send/receive and voice calls work, MMS send doesn't.
As for the network communication issues... I saw the same thing when using my VZW iPhone 5S which does support more bands than the VZW X, at least comparing Apple and Moto's web sites. I see the iPhone 5S switch between HSPA and LTE when using the T-Mobile SIM.
In my area it appears T-Mobile has re-farmed their 1900Mhz to HSPA
Click to expand...
Click to collapse
hey, KidJoe i got a moto x from us cellular but when i insert the sim card the cell says that the sim card is not accept and the cell doesnt get signal, i try to unlock it, but i couldn´t, if you have any solution for me please help me :crying::crying::crying::crying:

I'm running AT&T on a Verizon Developer Edition Moto X. I have good coverage (better than my old Nokia 520) and I get HSPA+ everywhere I go. I'm perfectly fine without LTE since I can still run anything and stream stuff with current speeds. A big plus is I can always switch to Verizon or other CDMAs if I want to.
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Force lte only

Hi,
I own sm-t715y, samsung website mention the availability of tdd lte band 40, i want to use a provider which is data only, it doesn't have any voice capability (called bolt). And a cdma provider which uses tdd lte band 40 as well (called smartfren).
Most of the tutorial on other devices which has tdd lte band 40 support has these steps:
1. Force lte only
2. Turn radio off and on
3. Set apn
I can't set force lte only on this tablet yet, tried *#0011# and *#2263# but it cant, the 2nd one cannot pop at all, please advice

When you say other device, this isn't Samsung is it.
I also have a S2 with band LTE 40, why don't you just buy a data only sim card, that is what I have 10GB data 1 year time limit.

Yes, the other device is oneplus one, alcatel one touch flash.
I tried experimenting with smartfren but no success at all, have not tried with the data only bolt, the cs said it cant but i doubt its true.

That is why, I had many Samsung, and non of them has lte only.
different phone/tablet has different features.

Unable to connect to carrier (Wind) after choosing different bands

I got an N6 as a loaner, and not having anything other than 3G connection, I tried to choose different bands in the *#*#4636#*#* diagnostic tests menu.
I chose USA Bands, Band 6, Band 7, and Band 15; nothing. There is no "Default Band" option (though I think there should be a way to undo this in a menu somewhere).
Choosing WCDMA Preferred or some other network type has no effect.
I looked up QPST and their flashing instructions, but it only seems to work for disabled LTE bands, not to restore whatever bands I'm supposed to be using.
Edit: this is a loaner phone, so I can't flash a new recovery and then a new radio.
Any help is appreciated.

Flash radio
Flash latest radio

winnower said:
I got an N6 as a loaner, and not having anything other than 3G connection, I tried to choose different bands in the *#*#4636#*#* diagnostic tests menu.
I chose USA Bands, Band 6, Band 7, and Band 15; nothing. There is no "Default Band" option (though I think there should be a way to undo this in a menu somewhere).
Choosing WCDMA Preferred or some other network type has no effect.
I looked up QPST and their flashing instructions, but it only seems to work for disabled LTE bands, not to restore whatever bands I'm supposed to be using.
Any help is appreciated.
Click to expand...
Click to collapse
I've never messed around with enabling/disabling different bands because everything has always "just worked" for me out of the box but maybe you can find the bands or settings you need at this website from Wind Mobile.

Jeepfan19 said:
Flash latest radio
Click to expand...
Click to collapse
I should have specified that this is a loaner, and as such, I am expected to return it unmolested.
If I can flash the radio from USB though, that might work as long as the tamper flag isn't set.

The nexus 6 has no tamper flag, unlike Samsung with its Knox flag. You should be able to unlock and relock the bootloader at will without leaving evidence.

Ok, so, learning that there is no tamper flag makes the whole process very easy, and I fixed it.
I downloaded the stock ROM from Google and flashed just the radio; works like a charm again.