01-22-2016 03:02 PM
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  1. jcrod73's Avatar
    I'm switching from Verizon to T-Mobile. They offer the Lumia 640 for $129. Is there a hardware difference between the 640 offered from T-Mobile & AT&T?? I was told that the AT&T one wouldn't have the ability for WiFi calling. What about an unlocked 640 or a 640XL on T-Mobile, could I still use the WiFi calling feature??
    08-19-2015 12:46 PM
  2. libra89's Avatar
    I'm switching from Verizon to T-Mobile. They offer the Lumia 640 for $129. Is there a hardware difference between the 640 offered from T-Mobile & AT&T?? I was told that the AT&T one wouldn't have the ability for WiFi calling. What about an unlocked 640 or a 640XL on T-Mobile, could I still use the WiFi calling feature??
    Since you are switching to T-mobile, you can save yourself some money and buy it from Walmart for basically $100. T-Mobile Microsoft Lumia 640 Prepaid Smartphone - Walmart.com

    Anyway, there's not much of a hardware difference, but WiFi calling is built into the system itself for the T-mobile variant. The AT&T variant, and also the unlocked versions do not have that. Otherwise, they are the same phone.
    Last edited by libra89; 08-19-2015 at 01:14 PM. Reason: Added a link
    HeyCori and jcrod73 like this.
    08-19-2015 01:12 PM
  3. jcrod73's Avatar
    Thank you libra89. Basically if I use a phone that is not a T-Mobile variant then I would just lose out on the WiFi calling feature. yes? So I could get a 640XL and just not have the WiFi calling feature?
    libra89 likes this.
    08-19-2015 01:52 PM
  4. libra89's Avatar
    You're welcome and yep, you wouldn't have it.
    jcrod73 likes this.
    08-19-2015 03:45 PM
  5. HoosierDaddy's Avatar
    FWIW I'm pretty sure WiFi calling is entirely software which may include the firmware. I don't think there is any hardware difference that permits it. Regardless, T-Mobile doesn't currently let it happen on phones they don't make money on the sale.
    papasurf, jcrod73 and libra89 like this.
    08-20-2015 09:59 PM
  6. lift's Avatar
    I'm switching from Verizon to T-Mobile. They offer the Lumia 640 for $129. Is there a hardware difference between the 640 offered from T-Mobile & AT&T?? I was told that the AT&T one wouldn't have the ability for WiFi calling. What about an unlocked 640 or a 640XL on T-Mobile, could I still use the WiFi calling feature??
    Only the T-Mobile Lumia 640 has wifi calling. Also, I bought an AT&T Lumia 640 and got it unlocked to use it on T-Mobile also. The AT&T Lumia 640 does NOT have band 12 LTE like the unlocked version or the T-Mobile version. AT&T sucks for doing that. They locked it out of the firmware so if you SIM unlock the phone and put a T-Mobile SIM in it, it will work fine but will not get the new Band 12 LTE that T-Mobile is starting to use a lot now nationwide.
    jcrod73, HeyCori and theefman like this.
    08-20-2015 10:50 PM
  7. James8561's Avatar
    oh and t-mobile and unlocked version has mobile hotspot feature built in. good luck getting AT&T to allow mobile hotspot.
    libra89 likes this.
    08-21-2015 12:12 AM
  8. Devon Day's Avatar
    oh and t-mobile and unlocked version has mobile hotspot feature built in. good luck getting AT&T to allow mobile hotspot.
    I've gotten the hotspot on my 635 to work, and I'm on AT&T. Haven't tried on my 640 yet though. But, I'd imagine that it'd work just the same.
    08-21-2015 02:11 AM
  9. worldspy99's Avatar
    oh and t-mobile and unlocked version has mobile hotspot feature built in. good luck getting AT&T to allow mobile hotspot.
    Follow instructions in this thread and enjoy Internet Sharing on an AT&T unlocked Lumia 640. I did that on my Lumia 830 and now on my AT&T Lumia 640. Cheers!
    http://forums.windowscentral.com/nok...mia-830-a.html
    08-21-2015 11:32 AM
  10. jcrod73's Avatar
    Thank you all!!! I went ahead and switched to T-Mobile and bought my own 640XL!! Put WIN10 on it and LOVING IT!!
    09-02-2015 02:25 PM
  11. tale 85's Avatar
    Thank you all!!! I went ahead and switched to T-Mobile and bought my own 640XL!! Put WIN10 on it and LOVING IT!!
    Welcome to T-Mobile, we need all the Windows folks we can get. Join us on /r/tmobile.
    09-02-2015 02:54 PM
  12. HoosierDaddy's Avatar
    Join us on /r/tmobile.
    What is that and how do you get there?
    09-02-2015 04:20 PM
  13. xandros9's Avatar
    What is that and how do you get there?
    They're talking about Reddit.

    Subreddits, basically subforums, are signified by the /r/

    (there's one for just about anything, r/windowsphone, r/justrolledintotheshop, r/worldnews, r/technology, r/legobionicle...)

    so the url would be reddit.com/r/tmobile
    HoosierDaddy likes this.
    09-02-2015 04:30 PM
  14. Dallas Johnson2's Avatar
    Where do i go to install win 10 for the windows phone?
    09-03-2015 02:35 AM
  15. Nokia5110's Avatar
    Where do i go to install win 10 for the windows phone?
    Install windows insider from store
    Check for updates
    W10M should be there.
    Install
    09-03-2015 03:39 AM
  16. Dallas Johnson2's Avatar
    okay thank you so much..
    09-04-2015 02:23 AM
  17. xandros9's Avatar
    okay thank you so much..
    WAIT!

    its not complete, erasing the phone may become necessary.
    09-04-2015 09:23 AM
  18. Dallas Johnson2's Avatar
    I installed it :( Is there a way to uninstall win 10 from the phone?
    09-05-2015 11:35 PM
  19. xandros9's Avatar
    I installed it :( Is there a way to uninstall win 10 from the phone?
    First, if you erase the phone using Settings > (something) > about and use "reset my phone" it will most likely improve operation over a simple upgrade.

    If that doesn't help, use the Windows Phone Recovery Tool to restore your device to the way it was before. It will erase everything, so in both situations, back up what you need.
    09-06-2015 01:29 AM
  20. tale 85's Avatar
    Thank you all!!! I went ahead and switched to T-Mobile and bought my own 640XL!! Put WIN10 on it and LOVING IT!!
    Glad to hear it! Now, stop by /r/tmobile and let everyone know what a great phone it is. We need Windows phone support at Tmo.
    09-07-2015 07:11 AM
  21. Dallas Johnson2's Avatar
    where did u buy your 640XL phone at?
    09-09-2015 12:30 AM
  22. jcrod73's Avatar
    where did u buy your 640XL phone at?
    I bought mine through eBay: Microsoft Lumia 640 XL RM 1096 Blue Factory Unlocked 5 7" 8GB Dual Sim | eBay
    09-10-2015 02:01 PM
  23. HoosierDaddy's Avatar
    Check B&H. Its twenty some more but has free shipping (eBay shipping unknown because that part of the page is broken). Most importantly, B&H includes a full year warranty since MS won't warranty that model in the US. So if it craps out within a year they fix it or replace it. When the 1520.3 I bought from them died at week 5 or 6 they shipped me a new one. Which reminds me, my year is up later this month. Keeping my fingers crossed for no problems until the 950XL is out.

    The eBay link above didn't work on my PC. Here is one that will: http://rover.ebay.com/rover/1/711-53...690%23shpCntId

    Or rather would work if the forum software didn't break it so had to change it to text.
    libra89 likes this.
    09-10-2015 03:26 PM
  24. Dallas Johnson2's Avatar
    Does it take the standard sim as the regular 640 lumia does? Or what sim card does it take?
    09-10-2015 08:46 PM
  25. libra89's Avatar
    Does it take the standard sim as the regular 640 lumia does? Or what sim card does it take?
    Yeah, all 640s take the same size of sim: Micro SIM.
    09-10-2015 09:10 PM
36 12

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