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Which microSD cards work with the Microsoft Lumia 640?

Manufacturers spec sheets often don't list the type of microSD card that you can use with your phone. And so the confusion arrives for some picking up a new phone, like the Lumia 640

"The only thing listed on the microsoft spec page is that it will take MicroSD cards. Will it accept HD and XC type cards? Are there any capacity limitations?" - Forums member Medwynd

The important spec to remember is that the Lumia 640, and all new Lumias for that matter, supports the SDXC standard. And since it's a standard, that's what matters. So you can use any of the microSD cards you find conforming to this, or the lower-spec SDHC standard.

"It will work with SDHC and SDXC. The difference between HC and XC is that the size of HC is between >2 and 32 GB and the size of XC is 32 GB to 2TB. (And from 32 onwards you can not use FAT32 formatting). There is no max size for your phone the 128 GB is "just" put in the spec because that is the current max size for microSD cards and SDXC""Side note: A class 4 card may not work because it is to slow. UHS (Ultra High Speed bus) standard is not supported so you will not get 30 or 48 MB/s because the max speed of the HIgh Speed bus in your phone is 25 MB/s." - forums Ambassador Harrie-S

Sandisk announced a 200GB microSDXC card at Mobile World Congress which should also be compatible with these Lumia phones when it goes on sale. But it also costs about 4 times more than a Lumia 640, so there's that to bear in mind as well!

Hopefully that helps clear up any questions you may have had about using a microSD card with your new Lumia 640, Lumia 640 XL or any of the current Windows Phones.

If you've any questions that need answering, be sure to stop by the Windows Central Forums where there are some great people waiting to help!

Richard Devine is an Editor at Windows Central. A former Project Manager and long-term tech addict, he joined Mobile Nations in 2011 and has been found on Android Central and iMore as well as Windows Central. Currently you'll find him covering all manner of PC hardware and gaming, and you can follow him on Twitter and Instagram.

87 Comments
  • I had also posted a similar query relating to Lumia 630. And Harrie-S was the first to answer ;P :) !
  • I use a SanDisk 16gb class 10 nitro but on every soft reset on my L520 it checks for error of sd card. Help anyone?
  • But would like to tell,that I can use a class 4 sd card without any problems in the phone, and apps installed on the sd card work flawlessly too
  • Indeed a class 4 also works. But if you have a mid/high level phone and use it for pictures and video storage it will lag. So as long as no "fast" reading/writing is needed you are good.
  • Though, I need to upgrade it now.. Its a class 4 16gb card that I used to use with my Nokia C6, then with the lumia 625 and now with the lumia 640. Though the card works without problems, I thinks those 16gbs are so less for me now :P
  • And, i use it for pictures and video storage.. Its all good till now :)
  • @Pallav Same here... It must be an issue with the OS.. The problem persists with Windows 10 TP as well.. I hope It's gonna change when W10 becomes official
  • Have you placed the card into a computer and run chkdsk /f? That will usually solve the issue. So will formatting the card.
  • I've noticed the same on my Lumia 520. Try doing soft reset when phone is switched off.
  • Same here
  • Pallav, I used to get these scans ( though not for every soft reset),
    I then re-formatted the SD card to exFat and afterwards I don't see these scans. You may think about giving a try. I am class 10 32G SanDisk.
  • If you have not found solution. Plug your card to PC, it then check and fix for error automatically. You can also access via right click your card drive on PC; properties> tools > error checking [check]. This fix regular error/regular error checking on phone. If the fix fail, you should delete folder "FOUND%"("%" being anything) and or move all folders to PC (required if you want your apps and games data on your card intact) then do the error checking again. Remember to put those folders back to card after successful fixing. This, fix what phone OS says "beyond fix". If that all fail, it is format and quick format should suffice. If that also fail, consider replacing the card. The fixing usually take 2 hours or more. For moving folders, copy then delete is faster process than move or cut process.
  • Try a hard reset, remove all your apps from the sd card and backup all your data. Format the whole thing to exFAT using a desktop and then try using it. I had the same problem with my previous card which too was 16 GB but UHS I. The problem went away when i bought my new 64 GB UHS I, and found out that it had the exFAT filesystem as default. I tried formatting my old memory card to exFAT and it fixed all my problems. Try to see if it works for you :)
  • Same problem with me, but i don't know where to report it to Microsoft.
    Other then this I do have another problem with Lumia 640 after using it for 7 days. 1. Sometime touch didn't response like my Lumia 520 does, it feel like that the phone hanged up.
    2. After 5-10 min of call phone heats up a lot near the earpiece as well as while playing normal games like subway surfer.
    3. Despite the large battery phone doesn't last the whole day which start from 6am to 10pm while network is on 2g and display at low with automatic setting on and single Airtel sim active.
    4. Phone never warn you even when you put the battery saver on if the battery goes down below 20% it warns only when the battery goes down below 10% but battery saver indicator start showing perfectly when the battery reach 20% mark.
    5. I am still unable to setup "find my phone option"
    6. Battery charged up very slow.
    7. Still no idea when we got call recording option
    8. Everytime I update the app one or more apps didn't download always showing pending"
    9. I am unable to download candy crush it stuck in between and continuously show downloading but didn't install at all.
    10. Still don't have option to attach songs in WhatsApp
    11. The biggest problem is I can't access to my mixradio subscription
    Now guys plz tell me till when should I stick to Microsoft.
    Fell free to contact me at kashif007rke@gmail.com
  • So the 128gb uses ntfs?
  • No! exFat
  • Oh and after looking online, it looks like exfat might be slightly faster than ntfs due to less overhead \ features which aren't needed on removable media.
  • Same here confused me a lot then I had to do a lot of research.
  • Nothing below class 10 is what I recommend
  • That's why my class 10 u1s self corrupted on my Lumia 635 but not my old class 10 that eventually becomes unrecognizable if I put even one app on it. Glad to know e.e"
  • Yup same problem. UHS-3 was always a problem for me.
  • I got this one for my 640. (http://www.strontium.biz/products/flash-cards/microsd-cards/32gb-uhs1-mi...) for S$20. i think it's great.  
  • Thanks for the link!
  • For US people, this website does not ship to USA.
  • I hope microsoft's next flagship Lumia will have sd card slot. Like the 1520.
    I have 32gb internal and another 128gb from sd card. Never worry about storing all my adult videos
  • Hahahaha adult videos lol Posted via the Windows Central App for Android
  • Does YouTube downloader work on redtube? Lol
  • A couple of those sites actually allow native downloading to phones... :D. (xhamster?)
  • XVideos is much better.
  • Dude, that's a lot of porn.
  • Haha LOL :D
  • I said adult videos, not porn. Any video rated above 18 is adult videos.
  • LOL
  • Rumors tell maybe Lumia 940 / 940 xl is Microsd place. i hope so. :-)
  • What rumor? Where?
  • Haha. Noice.
  • I have been using a Toshiba 16GB class 10 card. I bought it for my Lumia 630 and later I transferred it to my Lumia 730. Works great for me.
  • sandisk extreme.
  • The old Lumias (810, 920...) does not support the SDXC standard?
  • Yes they do.
  • Samsung 64GB EVO Class 10 Micro SDXC up to 48MB/s used on 635 and transferred to 640
  • 64GB SanDisk works absolutely great, thinking about buying the 128GB card when the price drops even more so i can add more Star Trek to my phone Posted via the Windows Central App for Android
  • +1 for this! So, where do you land on Voyager?
  • Good to know! I have a long commute, so I jam as much music as I can onto my current 64GB card in my Lumia521.
  • Are strontium sd cards(class 10) compatible?? Pls let me know as I'm running out of internal memory on my new Lumia 640xl ​
  • As long as they're an SDXC card then yes, it should work just fine. It's the standard, not the brand that matters.
  • SDHC is also fine right?
  • Yes
  • But if we are using a micro SD card of higher space capacity will the phone become slow....
  • That's a thought.  The OS would have to search through more files to find the correct one to load.  Good question!
  • Technicality it doesn't get slower, but has to seek more, which takes longer.
  • So, there is no any manuals in the box with lumia 640?
  • I have a class 10 SanDisk SD card, sometimes the app's icons which are installed on SD card goes blank, the photos section do not show any photo on the live tile neither inside it.. Only apps installed in phone memory works.. Any idea why it happens. Is there any problem wid the card... Anyone?
  • Mine works great on L730..may be card is defective
  • You could try to scan the card for errors on your PC. But basically SD cards are not as "reliable" as the internal memory and that is why some apps can not be stored on SD cards and have to be stored on internal memory.
  • I'm having loads of trouble with my SD recently.  I bought a 535 at the weekend because my 1020 bricked itself and it's currently getting repaired/replaced, I put a 64GB Kingston Class10 SDXC card in, moved all the apps over to the storage card. Everything worked for a day or so, then all the apps installed on the SD card stopped loading when I press the icon's, playlists on the SD card disappeared too.  I've not been able to move any of the apps back off the SD card, but in some cases I've been able to uninstall and reinstall to the phone.  This is only a temporary situation for me, my 1020 should be back soon, but if i had bought this phone and be stuck with it for 2 years I would be very disappointed.  Has anyone else seen anything like this?
  • I got a bunch of Samsung EVO 32gb and 64gb microsd cards from Best Buy when they went on fire sale for a single dollar a piece... Tbh, not terribly impressed... Maybe they were counterfeits, but the app shows as genuine...
  • Wow, that's either amazing or sketchy as heck. Lol. I wonder if they were ones that didn't really make advertised speeds... Surprised Best Buy would sell defects like that though.
  • I have been using Samsung Evo cards in two Lumia phones and they are working fine, I guess there is a reason best buy got rid of those cards for 1 dollar LOL
  • I have Samsung PRO 32 GB and I sticked it in my 435 lol. Even so it's pretty fast.
  • I always have used a lexar Class 10 64go with my lumias, and Never had a problem. Now I have a 640, but had 520-820-920-925-830-930.
  • How about for the NL1520? I'm about to buy a 64GB or even a 128GB. How about the class? Thanks!
  • For these high end phones go for class 10 so you will have no lag if you use the SD card, for the pictures and video, you take.
    But I even do not think you can buy a class 6 64GB.
    Furthermore this cards also (always) have a UHS standard but they still support class 10.
  • Thank you so much for writing the article Mr. Devine, but I found it confusing to understand, if I use a class 10 micro SD card I'll be fine, right?
  • Yes you are.
  • Yes. You should be.
  • Thank you
  • "there is no max size for your phone" is the most pleasant thing I read!
  • You Really don't need a Mass Capacity micro SD. My ONEDRIVE, I HAVE 1TB , What you need is a fast micro SD and this is it here , The Fastest SanDisk - Extreme PLUS 64GB microSDXC UHS-3 Class U-3 Memory Card - Red/Gold CHECK IT OUT AND PROVE ME WRONG
  • According to its data transferring speed(25 mbps) which micro SD card class is better...
  • Your phone only supports class 10 so a class 10 because that is the fastest your phone can handle. UHS has no influence for the speed in your phone but it also does not hurt your phone.
  • Do your homework!
  • http://dev.windowsphone.com/en-US/OEM/docs/Driver_Components/eMMC_4.5_and_SD_feature_support_in_Windows_Phone   please explain then why even UHS-1 is not enabled.   This card is indeed fast but not in your phone but in a UHS enabled device like a (high end) digital  camera  
  • SanDisk - Extreme PLUS 64GB microSDXC UHS-3 Class U-3 Memory Card - Red/Gold Class 10 and UHS (Ultra High Speed) Class 3 (U-3)
    Ensures high-performance recording for 3D and full HD5 (1080p) video.
    •Up to 80 MB/sec. transfer speed
    For efficient data transmission
  • I am had sd card lot problem
  • Guys pls tell me my Lumia 730 not receive one time password otp pls suggest me
  • I have a 640 xl but I can't upgrade to the win. 10 preview! What's going on? And why can't I get Hey Cortana????
  • Hey Cortana is not supported on 640xl processor
  • Very informative article, Richard.
  • Or instead of writing an article to reach a quota just look at the manual or specs. http://www.phonearena.com/phones/compare/Microsoft-Lumia-640,Microsoft-L... -> Hardware -> Storage Expansion. Done.
  • Same problem of sdcard is with me, but i don't know where to report it to Microsoft.
    Other then this I do have another problem with Lumia 640 after using it for 7 days.
    1. Sometime touch didn't response like my Lumia 520 does, it feel like that the phone hanged up.
    2. After 5-10 min of call phone heats up a lot near the earpiece as well as while playing normal games like subway surfer.
    3. Despite the large battery phone doesn't last the whole day which start from 6am to 10pm while network is on 2g and display at low with automatic setting on and single Airtel sim active.
    4. Phone never warn you even when you put the battery saver on if the battery goes down below 20% it warns only when the battery goes down below 10% but battery saver indicator start showing perfectly when the battery reach 20% mark.
    5. I am still unable to setup "find my phone option"
    6. Battery charged up very slow.
    7. Still no idea when we got call recording option
    8. Everytime I update the app one or more apps didn't download always showing pending"
    9. I am unable to download candy crush it stuck in between and continuously show downloading but didn't install at all.
    10. Still don't have option to attach songs in WhatsApp
    11. The biggest problem is I can't access to my mixradio subscription
    Now guys plz tell me till when should I stick to Microsoft.
    Fell free to contact me at kashif007rke@gmail.com
  • Made In Vietnam. So proud!!!!
  • I need to upgrade my Nokia 625 due to water  damage, I was able to restore form the old Micro card data, to a class 4 16gb card ( SanDisk Ultra 16 GB speed up to 48 MB/s) in a lumia 640 the card works without problems, It also loves its battery use, but the rest of the phone is fine, I hope this helps!
  • I've read these comments multiple times and thought I had this figured out. I bought a SanDisk Ultra 32GB UHS-I/Class 10 Micro SDHC up to 48 MB/s card but it had some stupid "write lock" on it that would not allow me to format the card and therefore it did not work on my new 640. I tried everything one can do to format the card but it would not happen. Assuming there was no "write lock" issues would this card work?  Also, has anybody had the same "write lock" issue? I don't know if it was just that individual card is messed up. If I get an exact replacement will the same problem persist? Any help is appreciated.
  • i have 640 xl lumia .I'm using samsung 16gb EVo class 10 sd card.However whenever i play a movie (2 gb) stored in the card it plays for 30 minutes then the video player automatically shuts down what could be the reason?
  • Hi i have a Lumia 640xl and i bought 64gb sandisk class10 sdxc last week and it won't work on my phone? what could be the problem? is it the brand? thank you i need an answer ASAP
  • hi.i have lumia 1320 and i put a micro sd 32 gb silicon power.the device is almost hanging and i cant do anything but restart.