Razr M can use 64GB MicroSDXC card

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doctork21

New member
Oct 14, 2012
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I purchased a SanDisk 64GB MicroSDXC memory card on Amazon.com, formatted directly on my Razr M, and it works perfectly!!! Now my Razr M has more total memory than my friend's I-phone 5 which he spent $400 for (64GB model). Plus when a larger GB microSD card is available, I can format it and expand my memory even more!!
 

mk1151

Senior Member
Apr 19, 2011
284
91
New York Area
This is correct - I posted the same in the Moto forums a few weeks ago, but apparently the RAZR M cannot utilize a higher than Class 6 card for the addition R/W speeds. I got a Class 10 but just letting people know it isn't necessary.
 

jarzy00

Senior Member
Oct 7, 2011
335
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Rochester
Literally ordered that exact one off Amazon right when I read this post lol thank you!

Sent from my XT907 using Tapatalk 2
 

Jersey846

Senior Member
Jul 20, 2011
778
208
Washington DC
I purchased a SanDisk 64GB MicroSDXC memory card on Amazon.com, formatted directly on my Razr M, and it works perfectly!!! Now my Razr M has more total memory than my friend's I-phone 5 which he spent $400 for (64GB model). Plus when a larger GB microSD card is available, I can format it and expand my memory even more!!

I love it when an iPhone user tries to explain why it's a bad thing to have sd card support. They usually end up stumbling all over their own words and thoughts, never really coming to a coherent or reasonable explanation.
 

aznguyen316

Senior Member
Feb 8, 2007
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I purchased a SanDisk 64GB MicroSDXC memory card on Amazon.com, formatted directly on my Razr M, and it works perfectly!!! Now my Razr M has more total memory than my friend's I-phone 5 which he spent $400 for (64GB model). Plus when a larger GB microSD card is available, I can format it and expand my memory even more!!

But he also has a MUCH nicer screen and MUCH better camera. /shrug
 
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t38rvm

New member
Dec 26, 2012
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No success so far with 64GB card

I purchased a SanDisk 64GB MicroSDXC memory card on Amazon.com, formatted directly on my Razr M, and it works perfectly!!! Now my Razr M has more total memory than my friend's I-phone 5 which he spent $400 for (64GB model). Plus when a larger GB microSD card is available, I can format it and expand my memory even more!!

I tried this with my Verizon Razr M, Android version 4.1.1. After I install the card, the Mount SD Card command is available, but after I choose it, I get a message that says Blank SD Card and the Unmount and Erase (Format) commands aren't available. I've tried with two phones and two cards, which makes it less likely that the results are due to a defective card.

Have the people who have succeeded had phones that were unlocked or rooted or are there some other steps needed to make the 64 gb MicroSDXC work? I've read suggestions to reformat the card from a PC to FAT, but others that say the card should only be formatted using the phone. Thanks.
 

t38rvm

New member
Dec 26, 2012
2
0
Problem solved

I tried this with my Verizon Razr M, Android version 4.1.1. After I install the card, the Mount SD Card command is available, but after I choose it, I get a message that says Blank SD Card and the Unmount and Erase (Format) commands aren't available. I've tried with two phones and two cards, which makes it less likely that the results are due to a defective card.

Have the people who have succeeded had phones that were unlocked or rooted or are there some other steps needed to make the 64 gb MicroSDXC work? I've read suggestions to reformat the card from a PC to FAT, but others that say the card should only be formatted using the phone. Thanks.

Just figured out that the Erase (Format) command is accessed by pulling down the icon at the top of the screen. It's working now!
 

Coronado is dead

Senior Member
Dec 24, 2010
1,003
199
Just got the 64GB myself. Writes at 6Mbps, but reads at 25Mbps. Pretty snazzy so far. Going to try filling it up and letting it read the card, since that's what made my Droid X always crap out on higher capacity cards, lol.
 
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Coronado is dead

Senior Member
Dec 24, 2010
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Filled the card, no problems like my old Droid X had. Not bad doubling my phone storage for $35 :)

Sent from my Nexus 7 using xda app-developers app
 

aviwdoowks

Senior Member
Sep 18, 2012
3,174
617
Seems the HD is different from our m in the sd card dept.
I have the Samsung 64g mb-mgcgb & it gives these file copy results: (3gb cwr bu folder)
Fastest
Aroma (philz 6): ~10mb/s write , fast fast! read
Root explorer: ~6 , fast
Osx sd card mount (not AFT): same
Philz sd mount : ~ 3, Slow
 

aviwdoowks

Senior Member
Sep 18, 2012
3,174
617
So much for that sd card! I have errors coming out my ears!

---------- Post added at 10:22 PM ---------- Previous post was at 10:15 PM ----------

Just got the 64GB myself. Writes at 6Mbps, but reads at 25Mbps. Pretty snazzy so far. Going to try filling it up and letting it read the card, since that's what made my Droid X always crap out on higher capacity cards, lol.

What card did you get?
 

aviwdoowks

Senior Member
Sep 18, 2012
3,174
617
Ok. I took back the Samy to Frys, found a Plextor (sandisk) at Bestbuy, the slow write, half price version. It performs as fast on our M. It is class 10 & the card has the identical markings of the $99 Sandisk.

USE custom recovery or safestrap to format from the xfat to default. You can use the "phone up" storage erase but the recovery works better for those on my sd swap: do formatting & copying while in recovery. Otherwise you have to reflash the swap.
I had problems getting windows or osx to format the full 64 gb.
I wonder if formatting only on the phone might be key to trouble free use?
 
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    I purchased a SanDisk 64GB MicroSDXC memory card on Amazon.com, formatted directly on my Razr M, and it works perfectly!!! Now my Razr M has more total memory than my friend's I-phone 5 which he spent $400 for (64GB model). Plus when a larger GB microSD card is available, I can format it and expand my memory even more!!
    1
    I purchased a SanDisk 64GB MicroSDXC memory card on Amazon.com, formatted directly on my Razr M, and it works perfectly!!! Now my Razr M has more total memory than my friend's I-phone 5 which he spent $400 for (64GB model). Plus when a larger GB microSD card is available, I can format it and expand my memory even more!!

    But he also has a MUCH nicer screen and MUCH better camera. /shrug
    1
    Just got the 64GB myself. Writes at 6Mbps, but reads at 25Mbps. Pretty snazzy so far. Going to try filling it up and letting it read the card, since that's what made my Droid X always crap out on higher capacity cards, lol.
    1
    I got a sandisk 64gb UHC1. The red and grey kind.

    Sent from my Nexus 7 using xda app-developers app