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What's DOS?
Posts: 35
Registered: ‎09-26-2012
Location: United States
Message 1 of 19 (101 Views)

phone only supports class 4 microsd


 



Much to my dismay, I purchased a class 10 microsd thinking this phone was the latetest and greatest so should the memory.



Wrong.... ended up calling motorola and class 4 recommended class.



Live and learn

Moto Sr Moderator
Posts: 4,157
Registered: ‎12-10-2006
Location: United States
Message 2 of 19 (101 Views)

Re: phone only supports class 4 microsd


click here for a 16GB brand name SanDisk class4 (plenty speed for phones) for $9.95 including shipping Smiley Happy

Moto Sr Moderator
Posts: 4,157
Registered: ‎12-10-2006
Location: United States
Message 3 of 19 (101 Views)

Re: phone only supports class 4 microsd


if you dont care about brand name then about $6 more dollars will double your memory to 32GB for only $20.68 shipping included over here

What's DOS?
Posts: 35
Registered: ‎09-26-2012
Location: United States
Message 4 of 19 (101 Views)

Re: phone only supports class 4 microsd


yes I found class 4 for a lot less...



just makes sense to me to use a class 10...



idk...

What's DOS?
Posts: 39
Registered: ‎09-13-2012
Location: United States
Message 5 of 19 (101 Views)

Re: phone only supports class 4 microsd


Hmm...I just ordered a 16GB class 20 San Disk from BHPhoto in NY for $18.  I would have thought that card speed is indeed important, but what is needed for these things??  I'll tell you, I really like clicky response.



 



Jon

Moto Emeritus
Posts: 12,243
Registered: ‎11-18-2009
Location: United States
Message 6 of 19 (101 Views)

Re: phone only supports class 4 microsd



jonl9 said:


Hmm...I just ordered a 16GB class 20 San Disk from BHPhoto in NY for $18.  I would have thought that card speed is indeed important, but what is needed for these things??  I'll tell you, I really like clicky response.



 



Jon


View original




Hi Jon.  I have never seen a class 20 microSDHC card before.  All SD (HC) cards now have a number on it for the speed.



Older cards used to have 16x, 33x, 100x, etc... while SD-HC have a 2,4,6,8,10 rating on it directly.   --- Dan



EDIT:  Perhaps that 20 represents 20MB/second data transfer rate, such as we see in this Amazon advertisement.

What's DOS?
Posts: 39
Registered: ‎09-13-2012
Location: United States
Message 7 of 19 (101 Views)

Re: phone only supports class 4 microsd


Oops, Dan, I've never seen a class 20 either, you are quite correct.  FINGER CHECK!



Class 10 is what it should have been, but again, what does the RAZR M really work best with and when have we overbought memory, if we have?



 



Jon

Moto Emeritus
Posts: 12,243
Registered: ‎11-18-2009
Location: United States
Message 8 of 19 (101 Views)

Re: phone only supports class 4 microsd



jonl9 said:


Oops, Dan, I've never seen a class 20 either, you are quite correct.  FINGER CHECK!



Class 10 is what it should have been, but again, what does the RAZR M really work best with and when have we overbought memory, if we have?



 



Jon


View original




Hi Jon.  I've made many typos myself...not a problem!  A high speed microSDHC or microSDXC card should be as fast as you can afford, it that happens to be a class 10, so much the better.  This is particularly true if you have 1080p videos stored on your microSDxx card for playback (or even recording, for that matter).  Not all class 10 cards are equal...I have found SanDisk cards to meet or generally significantly exceed the minimum required speeds for their class ratings and they have one of the best warranties in the industry.  Others may take issue, but my personal idea is you can never have enough RAM or external storage.     --- Dan

Token Ring
Posts: 463
Registered: ‎11-08-2010
Location: United States
Message 9 of 19 (101 Views)

Re: phone only supports class 4 microsd


see this thread- some class 10 work just fine:



https://forums.motorola.com/posts/e25e57fac0



moto only "tested" up to certain specs so that's probably what support "recomends" - real world at least some work fine.



Also - no expert but isn't the deal with SD cards that the speed is always downward compatible? (Size and format maybe not but speed)



what brand was the card you tried that didn't work? Perhaps that would be most helpfull to share so people know not to buy those. 



I think we'd need some sort of a test app to check the read write speeds to saw for sure what class the phone actually is topping out at? 



 



 

Moto Emeritus
Posts: 12,243
Registered: ‎11-18-2009
Location: United States
Message 10 of 19 (101 Views)

Re: phone only supports class 4 microsd



michaelk said:


see this thread- some class 10 work just fine:



https://forums.motorola.com/posts/e25e57fac0



moto only "tested" up to certain specs so that's probably what support "recomends" - real world at least some work fine.



Also - no expert but isn't the deal with SD cards that the speed is always downward compatible? (Size and format maybe not but speed)



what brand was the card you tried that didn't work? Perhaps that would be most helpfull to share so people know not to buy those. 



I think we'd need some sort of a test app to check the read write speeds to saw for sure what class the phone actually is topping out at? 



 



 


View original




"AnTuTu" on the Play Store for free does a comprehensive series of tests on our phones as well as speed tests of the external microSDHC/microSDXC cards.   --- Dan