The Windows 10 April 2018 update has arrived! Get the new Dell XPS 15, starting at $999.99
07-08-2016 09:38 AM
135 1234 ...
tools
  1. RumoredNow's Avatar
    @ AR2186

    This tutorial got a mention and a link in my Thread over at Carrier Discussion Lounge. http://forums.windowscentral.com/car...-unlocked.html
    12-09-2014 09:15 AM
  2. AR2186's Avatar
    Since we're talking about T-Mo and signals. Is it just me, or does T-Mo's signal fluctuate from LTE to EDGE and back continuously for you guys too, even though you remain in the same spot?
    I'm not having that problem in NYC, how strong is your LTE signal? You could try turning off the 2g radio to see if LTE keeps dropping to no signal. Dont leave it off, only do that to test
    RumoredNow likes this.
    12-09-2014 09:25 AM
  3. Liam Wong's Avatar
    I was able to test an At&t 1520 on wind mobile in Canada (they only use the AWS 4G band) and everything works perfectly.
    12-17-2014 05:14 PM
  4. DuoWing's Avatar
    Glad to hear this seems to be working. I'll have to go try this oh mine
    01-02-2015 07:45 AM
  5. Talderon's Avatar
    I believe there is a 32gb version of the AT&T 1520, but I'm not sure it's actively being sold / may have been a limited run. I'm curious if the ability to connect to the 1700 band is because I have hardware revision 4.1 (assuming it started as 1.0?). The phone came with Cyan out of the box
    I have the 32GB AT&T Variant. The availability was on Web Orders ONLY, they were never in stock in stores. They were just a tad more expensive than the 16GB models in stores. The specs between the 16 and 32GB were identical with the exception of the on board storage.
    aximtreo likes this.
    01-02-2015 09:17 AM
  6. hyedefinition's Avatar
    Actually, LTE is technically 3.5G so its all just marketing.
    Currently LTE is technically LTE using OFDMA and multiplexing antennas. I currently optimize for AT&T and have seen speeds of 80mbps on our pre launch cell sites.
    01-02-2015 10:22 AM
  7. AR2186's Avatar
    Currently LTE is technically LTE using OFDMA and multiplexing antennas. I currently optimize for AT&T and have seen speeds of 80mbps on our pre launch cell sites.
    I think you meant it's technically 4G, and if so, it's "4G" only through revisionist history. True 4G was supposed to start at LTE-Advanced, but people just starting calling LTE "4G" so they revised the definition even though it doesn't technically qualify. Bear with me, as my day job has nothing to do with technology, but I think we were basically saying the same thing with multiplexing antennae and LTE-Advanced (at least, my understanding of LTE-Advanced is band aggregation to provide a speed boost, among other things). So basically, first generation LTE is not 4G, anything afterward is 4G

    From Wikipedia:
    Although marketed as a 4G wireless service, LTE (as specified in the 3GPP Release 8 and 9 document series) does not satisfy the technical requirements the 3GPP consortium has adopted for its new standard generation, and which were originally set forth by the ITU-R organization in its IMT-Advanced specification. However, due to marketing pressures and the significant advancements that WiMAX, HSPA+ and LTE bring to the original 3G technologies, ITU later decided that LTE together with the aforementioned technologies can be called 4G technologies. The LTE Advanced standard formally satisfies the ITU-R requirements to be considered IMT-Advanced. To differentiate LTE Advanced and WiMAX-Advanced from current 4G technologies, ITU has defined them as "True 4G".
    From ITU:
    Following a detailed evaluation against stringent technical and operational criteria, ITU has determined that “LTE-Advanced” and “WirelessMAN-Advanced” should be accorded the official designation of IMT-Advanced. As the most advanced technologies currently defined for global wireless mobile broadband communications, IMT-Advanced is considered as “4G”, although it is recognized that this term, while undefined, may also be applied to the forerunners of these technologies, LTE and WiMax, and to other evolved 3G technologies providing a substantial level of improvement in performance and capabilities with respect to the initial third generation systems now deployed. The detailed specifications of the IMT-Advanced technologies will be provided in a new ITU-R Recommendation expected in early 2012.
    01-02-2015 05:30 PM
  8. myrandex's Avatar
    I will be testing this hear soon. I just need to get two unlock codes then I'm switching four lines over to TMo. I have a white 16GB 1520 that was bought before the green one came out (not that this is significant, just giving this info out due to discussion on this topic). I'm wanting to mod it to make it Qi compatible too but am waiting on a response to that question as well.

    Jason
    01-04-2015 09:08 AM
  9. bL33d's Avatar
    Anyway to have these settings stick after reboot? I'm trying to disable lte and just hspa
    01-04-2015 06:43 PM
  10. AR2186's Avatar
    Mine seems to just stick. Had that problem the first time, but since then no issues
    01-05-2015 08:38 AM
  11. oshintao's Avatar
    I have the 32GB AT&T Variant. The availability was on Web Orders ONLY, they were never in stock in stores. They were just a tad more expensive than the 16GB models in stores. The specs between the 16 and 32GB were identical with the exception of the on board storage.
    Are you using your Lumia 1520 on AT&T or T-Mobile??? If you are using your Lumia on T-Mobile are you getting LTE or H+ at least!!!!
    01-06-2015 07:27 PM
  12. Byu1's Avatar
    Does this really work? anybody can confirmed this works on T-Mobile 3G 1700 band? or is it hardware locked, need unlocked 1520.3/rm-938 only. what about t-mobile 700 LTE band. Recently news says T-Mobile is increasing 700 LTE band.
    01-29-2015 11:19 AM
  13. AR2186's Avatar
    I don't think it will work with the 700 LTE band given that the phone doesn't ship with that band, and there is only some overlap with AT&T's LTE bands. It looks like people were able to get the 1700 3G radio to connect in Canada, so there shouldn't be any problem in the US
    01-29-2015 11:44 AM
  14. ElronTheElder's Avatar
    Utilizing Consumer Cellular [ATT mvno] did this just to tinker.
    (Red 16GB 940)
    At first thought it degraded my signal since it dropped to 4G vs LTE prior.
    It came back showing LTE now so guess I didn't break it.
    Great thread. Thanks for the info.
    01-29-2015 05:07 PM
  15. Byu1's Avatar
    It does have 700 LTE band according to spec listed.
    Nokia Lumia 1520 - Full phone specifications
    01-29-2015 05:16 PM
  16. heywhitmarsh's Avatar
    It does have 700 LTE band according to spec listed.
    Nokia Lumia 1520 - Full phone specifications
    It's all in the details. While it does have 700mhz support, its only on band 17. Because of complications in Block B and Block C LTE, band 17 devices can not receive all of the 700mhz LTE band. This means they cannot receive band 12 signals, which means that you will not get low band T-Mobile LTE. However this network doesn't exist yet, and will probably take at least a year to be relevant. Since the AT&T 1520 supports all the other T-Mobile bands, it's definitely worth picking up for use on T-Mobile. I've seen as high as 60mbps down on T-Mobile on my AT&T branded 1520.

    TL;DR: The AT&T 1520 has full support for T-Mobile's network right now
    Last edited by heywhitmarsh; 01-29-2015 at 10:22 PM.
    01-29-2015 05:30 PM
  17. RumoredNow's Avatar
    Does this really work? anybody can confirmed this works on T-Mobile 3G 1700 band? or is it hardware locked, need unlocked 1520.3/rm-938 only. what about t-mobile 700 LTE band. Recently news says T-Mobile is increasing 700 LTE band.
    If you read this thread it is confirmed that it enables T-Mo compatible 1700 MHz AWS for 3G/H+ reception in all T-Mo legacy areas which have not had an LTE rollout. It effectively makes the RM-940 3G radio identical to the 3G radio on RM-938.

    RM-940 (AT&T) and RM-938 (Latin America) have identical LTE radios.

    capture.jpg

    AT&T uses LTE Bands 2@1900, 4@1700 and 17@700 MHz
    T-Mo uses LTE Bands 2@1900, 4@1700 and 12@700 MHz
    Source: List of LTE networks - Wikipedia, the free encyclopedia

    The difference between Band 12 and Band 17 is that Band 12 is broader... It encompasses a higher and lower end point than Band 17.
    Band 12 uplinks on 699-716 MHz and downlinks on 729-746 MHz
    Band 17 uplinks on 704-716 MHz and downlinks on 734-746 MHz
    Source: E-UTRA - Wikipedia, the free encyclopedia

    Note that Band 17 is a subset of Band 12. A Band 17 radio falls right in range for Band 12 and will cross over.

    A Band 12 radio may not work optimally on Band 17 as it might try and "talk" to the towers outside of their "listening" range. This is why AT&T is resistant to rolling out Band 12 as it would strand AT&T users with only Band 17 on board.

    So Band 17 (AT&T) can substitute for Band 12 (T-Mo).

    Both RM-938 and RM 940 have everything they need for any AT&T or T-Mo compatible service...
    sahib lopez and Donny James like this.
    01-29-2015 05:36 PM
  18. Byu1's Avatar
    The reason I asked is because original rm-940 has AWS 1700 disabled. T-Mobile has fall back to 3G on area LTE is not available. rm-940 will fall on edge if AWS is not enable.

    Does the phone show 3G on the top?
    01-29-2015 06:15 PM
  19. pankaj981's Avatar
    Well till now no one has confirmed anything. Enabling 1700MHz does not enable AWS. AWS is 1700/2100MHz enabled together. Unless someone using an AT&T unlocked 1520 posts the 3G UARFCN from Field Test we cannot confirm whether this method works. In order to make it simple, set highest connection speed to 3G, go to Field Test and repeat the steps mentioned by OP on a T-Mobile SIM and post the UARFCN
    01-29-2015 06:36 PM
  20. Byu1's Avatar
    In the picture under step 5, B4 WCDMA 1700 has same number from number on this page.

    PDAmaster | PDAdb.net

    LTE1700/2100 (B4)

    Does the phone show H+ when it get to 3G?
    01-29-2015 08:34 PM
  21. RumoredNow's Avatar
    Well till now no one has confirmed anything. Enabling 1700MHz does not enable AWS. AWS is 1700/2100MHz enabled together. Unless someone using an AT&T unlocked 1520 posts the 3G UARFCN from Field Test we cannot confirm whether this method works. In order to make it simple, set highest connection speed to 3G, go to Field Test and repeat the steps mentioned by OP on a T-Mobile SIM and post the UARFCN
    I would have sworn that someone reported back here that it worked...

    Here's more from: Nokia Lumia 1520 passes through FCC - ThePocketTech

    capture.jpg

    The point of this thread is to enable what was disabled at AT&T request and "hidden" from casual users.
    01-29-2015 09:37 PM
  22. pankaj981's Avatar
    I would have sworn that someone reported back here that it worked...

    Here's more from: Nokia Lumia 1520 passes through FCC - ThePocketTech

    Click image for larger version. 

Name:	Capture.JPG 
Views:	28 
Size:	48.5 KB 
ID:	95151
    Well one can claim the same thing about the AT&T 920 and Rogers variant, AWS disabled. By now everyone who tried has been unsuccessful. Field Test mode was disabled on the AT&T ROM but not on Rogers. Folks who have flashed the Rogers pre-portico ROM onto the AT&T variant (including me) couldn't enable AWS through Field Test, even though the option is checked. Heck even the now discontinued Lumia 810 had the LTE option in Field Test, which really didn't mean anything. If a band is disabled by hardware there is no way it would magically enable after flipping switches in higher level ROM access menus (such as Field test).

    Again I am not saying that the RM-940 doesn't support 3G/HSPA+ on AWS, I just want someone to confirm it and UARFCN band while being used on T-Mobile's HSPA+ would confirm that
    01-29-2015 09:45 PM
  23. Liam Wong's Avatar
    Well till now no one has confirmed anything. Enabling 1700MHz does not enable AWS. AWS is 1700/2100MHz enabled together. Unless someone using an AT&T unlocked 1520 posts the 3G UARFCN from Field Test we cannot confirm whether this method works. In order to make it simple, set highest connection speed to 3G, go to Field Test and repeat the steps mentioned by OP on a T-Mobile SIM and post the UARFCN
    It works. I have an AT&T model working on Wind mobile in Canada. They only have the 1700 HSPA band up here.
    RumoredNow likes this.
    01-29-2015 09:54 PM
  24. RumoredNow's Avatar
    It works. I have an AT&T model working on Wind mobile in Canada. They only have the 1700 HSPA band up here.
    And that, specifically, Band 4 flavor 1700.
    UMTS frequency bands - Wikipedia, the free encyclopedia
    01-29-2015 09:59 PM
  25. pankaj981's Avatar
    It works. I have an AT&T model working on Wind mobile in Canada. They only have the 1700 HSPA band up here.
    What works? LTE or HSPA+? 1700MHz can be LTE Band 4 as well.

    Try this. Set your highest connection speed to 3G under cellular+settings. Your network will refresh and connect to either HSPA+/3G or 2G/E. Now go to the dialer and dial ##3282#, this will bring up the field test mode. Click accept. Check if you are still connected to 3G/HSPA+, if yes then proceed. Select 3G DCH Status and take a screen shot and post the values here
    01-29-2015 10:06 PM
135 1234 ...

Similar Threads

  1. [DV8P] Typing problems Windows 8?
    By Gaziki in forum Dell Venue 8 Pro
    Replies: 3
    Last Post: 12-08-2014, 11:08 AM
  2. Lumia 635 miracast problem
    By KINGINI LABS in forum Nokia Lumia 635
    Replies: 2
    Last Post: 12-08-2014, 10:29 AM
  3. When will an app be created to view Samsung Smartcam HD on Lumia 1520 and others?
    By Windows Central Question in forum Ask a Question
    Replies: 3
    Last Post: 12-05-2014, 09:38 AM
  4. Replies: 1
    Last Post: 12-04-2014, 10:27 PM
  5. Replies: 2
    Last Post: 12-03-2014, 12:02 PM
LINK TO POST COPIED TO CLIPBOARD