1. guinnsquirrel's Avatar
    Hello all. Quick question: Just curious to know if there is a list of all Lumia 1520 variants? Keen to better understand the version of 1520 I now own (having bought one secondhand).
    RumoredNow likes this.
    12-16-2014 08:31 AM
  2. RumoredNow's Avatar
    Most of the difference is in the radios. Nokia Lumia 1520 - Full phone specifications

    The RM-940 for AT&T is the big deviation. It offers only 16GB internal storage on most with a rare 32GB upgrade only in black. ALL AT&T models have Qi Wireless Charging stripped out. Then PowerMat charging is added in, but requires a jacket. AT&T models have the 3 contact pins on the back for the charging jacket and no other 1520 has that.
    12-16-2014 11:37 AM
  3. heywhitmarsh's Avatar
    12-18-2014 12:37 AM
  4. ludawg94's Avatar
    I was about to ask the same thing. I'm surprised no one here has made a sticky on the various 1520 variants with which networks they best work with. From what I can tell the only one that works well with T-Mobile is the RM-938 is that correct?
    12-18-2014 03:43 AM
  5. RumoredNow's Avatar
    Nice!!! Except it skips RM-938 all together.


    I was about to ask the same thing. I'm surprised no one here has made a sticky on the various 1520 variants with which networks they best work with. From what I can tell the only one that works well with T-Mobile is the RM-938 is that correct?
    ​Sure... Until just a couple weeks ago...

    The issue with a carrier unlocked AT&T 1520 not working optimally on T-Mo is the missing 1700 MHz on the 3G radio which you want to have in any area where T-Mo does not offer LTE... Without 3G @ 1700 you fall down to EDGE when LTE coverage drops out.

    That may now be fixed. AR2186 has a workaround how-to: http://forums.windowscentral.com/nok...-4-1700-a.html Seems the 3G @ 1700 MHz is on the radio, but disabled. AR2186 shows how to use Field Test to activate it and then you are golden.
    12-18-2014 10:42 AM
  6. HoosierDaddy's Avatar
    FWIW, that doesn't even mention the 938 (1520.3)
    12-18-2014 11:10 AM
  7. heywhitmarsh's Avatar
    I'm using the AT&T 1520 on T-Mobile and have no problems. I picked up a brand new AT&T 1520 from ebay for $350 unlocked. Couldn't justify spending $200 more to get the RM-938.

    Also I know my link doesn't specify product codes for the RM-938, but I couldn't find them anywhere.
    RumoredNow likes this.
    12-18-2014 02:48 PM
  8. RumoredNow's Avatar
    I'm using the AT&T 1520 on T-Mobile and have no problems...
    Have you tried to enable 1700 WCDMA yet?
    12-18-2014 03:58 PM
  9. Juan Pablo Ursic's Avatar
    Is it possible to install a RM-937/38 firmware on the AT&T that it's RM-940? Heard that Denim has appeared in CV Finland and i want to try it.
    12-18-2014 04:32 PM
  10. Loco5150's Avatar
    Demin has appeared for 1520 in Finland? Wut
    12-18-2014 04:35 PM
  11. Loco5150's Avatar
    Nope, not for me at least.
    12-18-2014 04:37 PM
  12. Loco5150's Avatar
    Scratch that, just got Denim to my L1520.
    12-18-2014 05:08 PM
  13. heywhitmarsh's Avatar
    Have you tried to enable 1700 WCDMA yet?
    I went to the service menu and enabled it there. However I live in a refarmed area so I have no way to verify that it is actually working.
    But the thread that explains the workaround has a couple posts saying that it works.
    RumoredNow likes this.
    12-18-2014 05:25 PM
  14. RumoredNow's Avatar
    I'd leave that 1700 WCDMA active for traveling. Glad you tried it out. Thanks for the update.
    12-18-2014 06:07 PM
  15. Juan Pablo Ursic's Avatar
    So anybody knows if i can flash another firmware in my AT&T 1520?
    12-18-2014 06:26 PM
  16. GoodThings2Life's Avatar
    So anybody knows if i can flash another firmware in my AT&T 1520?
    You could try, but it will brick your phone at worst and render your radio useless at best.
    RumoredNow likes this.
    12-18-2014 09:56 PM
  17. heywhitmarsh's Avatar
    So anybody knows if i can flash another firmware in my AT&T 1520?
    Because the hardware is different I doubt the firmware for the RM-938 would even work.
    If the 1520 is anything like other AT&T windows phone it will have the firmware locked down anyway so it can't be flashed.
    12-19-2014 02:16 AM
  18. Ifeanyi Ogbodo-benson's Avatar
    Which cv is rm 937-im-mea3 any help
    12-19-2014 02:28 AM
  19. ludawg94's Avatar
    I'm using the AT&T 1520 on T-Mobile and have no problems. I picked up a brand new AT&T 1520 from ebay for $350 unlocked. Couldn't justify spending $200 more to get the RM-938. .
    Who was the seller on Ebay? The only AT&T 1520 unlocked ones I saw were I think store displays or refurbs. I'm on the same boat too can't get myself to spend 500+ on the device that's already a year old. Also are you able to do Tmobile's wifi calling?
    12-19-2014 10:12 PM
  20. RumoredNow's Avatar
    Who was the seller on Ebay? The only AT&T 1520 unlocked ones I saw were I think store displays or refurbs. I'm on the same boat too can't get myself to spend 500+ on the device that's already a year old. Also are you able to do Tmobile's wifi calling?
    ​Only T-Mo branded phones can use the T-Mo WiFi calling App. Sorry.
    12-20-2014 12:46 AM
  21. heywhitmarsh's Avatar
    Who was the seller on Ebay? The only AT&T 1520 unlocked ones I saw were I think store displays or refurbs. I'm on the same boat too can't get myself to spend 500+ on the device that's already a year old. Also are you able to do Tmobile's wifi calling?
    Nokia Lumia 1520 16GB Bright Green ATT Smartphone Unlocked New | eBay
    This is the listing I bought. The phones are brand new, it looks like the boxes were opened just to unlock the phones. The one I received had no time on the call counter in network plus so it was never actually used.
    12-20-2014 02:54 PM
  22. Qurt Mancini's Avatar
    Ok I'm using an unlocked 1520 and ever since I updated to 8.1 I've had an overheating,phantom touch and rebooting problem. Just the denim and the problem is still there and its very frustrating. Haven't installed any apps that wasn't there before updating. Now my microphone doesn't work I have to be using an earphones and my control keys dont light up anymore but they still work. Any help?
    03-14-2015 05:55 PM
  23. RumoredNow's Avatar
    Qurt,

    With all that going on I think you should make a backup and do a clean install with LSRT.
    03-14-2015 08:42 PM

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