A quick flick to scroll seems to be impossible. Does anyone know the registry tweak that edits the initial scroll lag? Thanks!
Searched but I cant find it?
Does no one know? Everyone is looking but no answers. lol.
rebump. Nyone?
use a compatible SD card
yshi41 said:
use a compatible SD card
Click to expand...
Click to collapse
um yes, thanks but no thanks. I have a compatible sd card. if it isn't i wouldnt be able to use wp7.
my card works and has always worked. even with android i had no problem.
So you're telling me you have super fast flick-ing action? I highly doubt it.
Anyone else with a better suggestion?
Yeah, I have one - change your SD card.
I have great scrolling, no lag at all. The SD card makes a huge difference. When I was using a class 4 kingston, wp7 was laggy and didn't run that well... it still ran and used the card, though. But now using a class 2 sandisk, wp7 runs as smooth as butter... no lag and battery life is much improved. What kind of card do you have? Cards with good random access speed is what you want for wp7... usually lower class cards have better random access speed than higher class cards. Class 2 sandisk seem to work consistently well, but I guess some people have had issues. But even cards that are same class and same brand, but have different manufacturing numbers or serial numbers will be very different performance wise.
i have a sandisk 8GB class 4. it has never had any problem.
are you guys telling me that by downgrading to a class 2, i may have a faster WP7 OS?
that is ridiculous!
can anyone confirm this?
I'm still using Class 4
I will backup my data and test this tomorrow.
lemonspeakers said:
i have a sandisk 8GB class 4. it has never had any problem.
are you guys telling me that by downgrading to a class 2, i may have a faster WP7 OS?
that is ridiculous!
can anyone confirm this?
Click to expand...
Click to collapse
You might... it really depends on the sd card. Sandisk class 2 cards made at one time can be very different than sandisk class 2 cards made 6 months later. Same with class 4 or with any sd card out there. When it comes to the random access speed, it can vary greatly... manufacturers don't test this speed and don't aim to make consistent scores of that. But usually the tricks that manufacturers do to get better sequential write scores on their chips end up hurting the random access speeds. That's why more class 2 cards are compatible and work better with wp7 than class 4, 6 and 10 cards. And if you are having lag, then that means you can definitely do better, because I have no lag at all at this point... maybe every once in a while I'll get a little lag here or there, but overall, it's VERY smooth. I haven't installed my apps yet... only like 10 or so apps from the market, and only copied one music album over so far, so maybe I'll get more lag when more is installed... not sure. I have 21gb partitioned over for wp7 on my sandisk class 2 32gb card. When I was using a kingston class 4, I definitely had a lot of lags and I hadn't even installed anything at that point. But I have heard that sandisk class 4 works good, too, but, like I said, when and what factory the chips were produced in can make a big difference with the random access speed which is what wp7 needs to be smooth.
cdguider said:
I will backup my data and test this tomorrow.
Click to expand...
Click to collapse
how was your test so far?
please let me know thanks =D
Lag ???? WP7 is smooth as butter, this is why I'm still using WP7 over LAGGY Android.
ps: I'm using Sandisk 2gig class 2
It's all to do with your micro SD card, my old Samsung 8gb card, ran ok, but would somtimes lag, not load marketplace, things would crash and the occassional autoreboot as well, so I ordered one of the Microsoft recommended sandisk 8 GB ultra microsd cards, not a single lag, no crashes, things run so smooth and fast its really quiet amazing. How ever many times and different ways you format your card if its not the right one it will never run wp7 smoothly
Have a Sandisk 16GB Class 2. in Marketplace lags, slow download, slow load pictures
I have downloaded `` Xbox Live Extras `` in Market, took 10 minutes to install, download deducted
jenzy1985 said:
Have a Sandisk 16GB Class 2. in Marketplace lags, slow download, slow load pictures
I have downloaded `` Xbox Live Extras `` in Market, took 10 minutes to install, download deducted
Click to expand...
Click to collapse
Could be a fake one? Whats the model number?
I have the 8gb and 16gb ones recommended for WP7 by sandisk and they work perfectly without any lag.
mickfarr said:
Could be a fake one? Whats the model number?
I have the 8gb and 16gb ones recommended for WP7 by sandisk and they work perfectly without any lag.
Click to expand...
Click to collapse
Fake, no why? I bought it yesterday in the mobile phone shop. The dealer said it was the new version. The old cards would have to send them back. Really no Joke
jenzy1985 said:
Fake, no why? I bought it yesterday in the mobile phone shop. The dealer said it was the new version. The old cards would have to send them back. Really no Joke
Click to expand...
Click to collapse
You should take the class 2 sandisk back and order a class 2 sandisk from somewhere else... most class 2 sandisks work great with wp7. But like I said in several other posts, just because the brand and class are the same, doesn't mean the card will perform the same. They don't test the random access speed on cards so it's not consistent on cards, and it's random access speed that matters with wp7. I was just testing my cards today... I have one class 2 16gb sandisk with great random access speed and works great in wp7, and I have another class 2 sandisk that has bad random access speed and makes wp7 laggy. The read and write speeds were the same on the cards, though. My class 2 32gb sandisk has good random access speed, and my class 4 32gb sandisk I just got yesterday has even better, but my old class 4 sandisk 4gb card has terrible random access speed. My class 4 32gb kingston and my class 6 8gb kingston both have terrible random access speed as well.
Cards of same class from same manufacturer can have different chips made in different factories depending on when and where they were made. Also, a lot of the time, the chips the they make to have higher sequential read and write speeds will have worse random access speeds, so you will probably have better luck running wp7 with a class 2 than with a class 6 or 10. Microsoft reported this from their testing of memory cards for wp7. This doesn't necessarily mean a class 4 or 6 card won't work just as good or better than some class 2 cards, and it doesn't necessarily mean a class 2 card will work well. The problem is that the random access speed is not rated for cards so it's not kept consistent on cards. But at this time, it seems the class 2 sandisk seem to have the most consistent high random access speeds, but again, doesn't mean all of them will. Like I said, I have a class 2 16gb sandisk that doesn't work well (which is the one I bought retail), but the class 2 16gb sandisk that came with my phone works very well. Also, I just got a new class 4 sandisk 32gb card which I haven't tried for wp7 yet, but from benchmarking the card, it looks like it will work very well. I'm gonna test it with wp7 tonight.
Related
I created videos showing the dramatic difference (before vs. after) but then realized this site does not allow me to upload videos (and I am too lazy to set up a utube account).
The 16GB Micro SDHC card that comes with the T-Mobile HTC HD2 is only Class 2 and is a very SLOOOOOWWW card (also class 2 cards are CHEAP, that is why it is INCLUDED FREE). If you watch the Transformer movies installed on that card you will discover there are a few times during the movies where the screen momentarily freezes. Also if you have alot of songs on the card, when you scroll over to the media player you will see it takes forever for the media player tab (about 45 seconds) to display anything. Even a game that comes with the unit repeatedly freezes and is not playable because of the speed of the card - under games, try the game called "Ferrari GT Evolution". It is a great game but it is unplayable on that card.
I purchased a 16GB Class 6 Micro SDHC Card and it came today. I copied everything from the old card to the new card. WOW, WHAT A DIFFERENCE! It is about $60 but is makes a VERY big difference in performance for everything mentioned above. For instance, the Ferrari game mentioned above does not freeze at all (and loads much faster) and also when I scroll over to the media play tab the delay before that tab becomes useable is only about 3 seconds.
If you want a SAFE great way to really improve the performance of your unit, replace the old crappy Class 2 Micro SDHC card with a Class 6 version. WOW.
(BTW, my main reason for getting this card was also that it took too long to take a photo and then to be able to take another one immediately afterwards. Now that is MUCH faster as well. A workaround would be to not use the card for picture storage but I prefer to put them on the card.)
I have been using a 4GB class 6 card I had laying around and I have seen a difference as well. I copied all the data from the 16GB card to my computer then copied it to the 4GB card to start out with. I saw a big improvement in the momentary freezes that occur when navigating the UI, music indexing and video playback. After using that card for a couple weeks I copied everything back to the 16GB card after formatting it and popped it back in to see if it was a placebo effect. Things were noticeably different, it just felt more sluggish at times. The Class 2 card isn't bad and it isn't the whole problem but getting a better card does change things a bit.
I did pick up a couple 8GB class 6 Sandisk cards for about $10 not to long ago for my camera. The 16GB and 32GB cards aren't as economical yet. The improvement is worth $10-$20 dollars to me but not $60.
how can i tell if my other card is a class 4 or not
sherlockpwnz said:
how can i tell if my other card is a class 4 or not
Click to expand...
Click to collapse
It'll be printed right on the front of the card...a little number inside of a circle. If you dont see one there, odds are it's a class-2
Panasonic makes a Class 10...that's what I use lolol...
~Jasecloud4
Class 6 vs 2 Photo... (Micro SDHC Card)
There is no such thing as a Class 10
Look at the photo (CLICK ON THE PHOTO TO ENLARGE IT AND SEE THE DIFFERENCE) FOR THE Speed Class Designation. I guess the standard spec does not say which way is right-side up for printed labels!
Class 6 is the highest speed currently. There are 32GB cards out there (which the unit can support) but they are VERY expensive. The Class 6 card I bought was somehyting like $60 with the shipping from Newegg.com.
Also notice that it is such a damned nightmare to be able to read these ever so tinier labels on everything out there! (Or maybe it's also because of my age.)
It is true, also, that those without the class specification are much older - and slower, I guess they should all be lumped in presumably with class 2
KruseLudsMobile said:
There is no such thing as a Class 10
Click to expand...
Click to collapse
You might want to have a look at THIS and THIS...class-10 16GB cards do exist and are currently available. Jase doesn't usually just make crap up either
Wow Class 10 - !
Sorry, my bad, I guess there is Class 10 now! YIKES! My apologies
PWND!
sweet I didin't know there were class 10 either.
Guess I am going to pick one up soon.
scrizz said:
PWND!
sweet I didin't know there were class 10 either.
Guess I am going to pick one up soon.
Click to expand...
Click to collapse
No one is pwning anyone.
Just merely stating the fact.
$100...Hope they become cheaper!
thanks for this thread... i totally didn't realize there were speed diffs on microSD cards.
so a few questions then:
1. the new 32GB sandisk microSD is only class 2... i assume no other manufactures are out yet, especially with a class 6 or 10. this is the very end of the SDHC standard. the next upgrade will be all SDXCs.
2. will a class10 be better than a class 6? i always thought that there are spec. limitations to SD card readers itself. does anyone know what the max limit of the HD2 SD card reader is? class 6 or 10? because if it's class 6, then buying a class 10 would be useless.
i remember that older SD card readers can't read the SDHCs.
JediFonger said:
thanks for this thread... i totally didn't realize there were speed diffs on microSD cards.
so a few questions then:
1. the new 32GB sandisk microSD is only class 2... i assume no other manufactures are out yet, especially with a class 6 or 10. this is the very end of the SDHC standard. the next upgrade will be all SDXCs.
2. will a class10 be better than a class 6? i always thought that there are spec. limitations to SD card readers itself. does anyone know what the max limit of the HD2 SD card reader is? class 6 or 10? because if it's class 6, then buying a class 10 would be useless.
i remember that older SD card readers can't read the SDHCs.
Click to expand...
Click to collapse
1. I haven't seen any class 6 32gig cards but there will be some eventually.
2. Technically class 10 is faster than class 6 but unless you run everything off your sdcard and have a ton of music/video I doubt it would be worth it. If you were going to be using a 32gig card then a class 10 would probably be worth it, though I don't know if the HD2 supports that speed.
sirphunkee said:
You might want to have a look at THIS and THIS...class-10 16GB cards do exist and are currently available. Jase doesn't usually just make crap up either
Click to expand...
Click to collapse
Thanks for the "usual" lolol...
To be honest I've got the class 10 Panasonic, and a class 6 Kingston, (both 16gb [32gb models are ridiculously expensive]) and when you run them side-by-side in a phone, there really isn't a difference in everyday use that I can tell. Class 6 is plenty fast for a phone. But there's always people like me in the world who aren't afraid to fork over the extra money to see if the latest tech will get me a little extra speed.
For those on the ropes as to what to get: if your just listening to music, Class 2 is good; for video, class 4 is good; if your non-stop music and video all day everyday work and play, and have some extra cash Class 6 rocks.
For all of you nut jobs like me who care about the extra microseconds of speed, lolololol, and have the money to spend...get the Class 10...
~Jasecloud4
the first thing i did for my hd2 was upgrade to a class 6 from previous experience with rooted android handsets (where upgrade to class 6 is always recommended
would a class 10 or a class 6 improve battery life?
Thanks for the thread and the informative posts, I guess I will make sure to get at least a class 6 for my media heavy device.
Also, if I were to buy one, which companies are reliable? Or are they all pretty much the same? I've only heard of SanDisk and Kingston because I've met the co owner of Kingston and he gave me some free stuff before.
jas0nw0ng said:
Also, if I were to buy one, which companies are reliable? Or are they all pretty much the same? I've only heard of SanDisk and Kingston because I've met the co owner of Kingston and he gave me some free stuff before.
Click to expand...
Click to collapse
I would just stick with sandisk or kingston anyway, they're both as reliable as any, and usually priced right along the lesser-known maufacturers.
So for anyone who has used both a class 6 and class 10 card IN THE HD2, is there a speed difference? I have a paypal coupon code that is good for 25% off, and am eyeing some of the class 10 kingston cards on ebay which would come out to about $74 with this coupon code. Not very much more than a class 6, course i could just use the coupon code for a class 6 off ebay too. I would like to go the 32gb route, but seems everything 32gb is class 2 =(
This is an observation across several different builds with Hastrain 8.5.x and MDJ 7-8 kernels:
ScanDisk Class 2 MicroSD -- runs smooth without any problems
Any Class 10 MicroSD that i have tried -- frequent wake from sleep screen delays and occaionals BSoD
I have tried MDG Revolution 1.7, CoreDroid, Topia Series with Hastrain 8.5.x and MDJ 7-8 kernels.
The problem with Class 10 microSD cards is consistent and dissapears instantly after switching back to a Class 2 microSD.
I am not sure why, perhapps it has something to do with power consumption.
It would be great is Hastrain or MDJ could look into this problem.
Any feedback would be appreciated!
Thanks
That's not your card. That happens to all class cards on all builds. Some people say its fixed but that is straight BS. Like you, I wish it was fixed once and for all.
Maybe your class 10 card is error. Use flash card software to test it (in reading/writing testing).
I think i have found the problem. When i come back
From standby the wlan stopped and then comes back.
I tested it i deactivated wlan and test it no freezes when
Wlan is activated it freezes.
Is the class 10 also a sandisk card?
Sent from my HD2 using XDA App
I have one Kingmax class 10 16G and one Toshiba class 2 16G. I got the same problem only when using the class 10 ,especially on the phone call page.
mkutsen said:
This is an observation across several different builds with Hastrain 8.5.x and MDJ 7-8 kernels:
ScanDisk Class 2 MicroSD -- runs smooth without any problems
Any Class 10 MicroSD that i have tried -- frequent wake from sleep screen delays and occaionals BSoD
I have tried MDG Revolution 1.7, CoreDroid, Topia Series with Hastrain 8.5.x and MDJ 7-8 kernels.
The problem with Class 10 microSD cards is consistent and dissapears instantly after switching back to a Class 2 microSD.
I am not sure why, perhapps it has something to do with power consumption.
It would be great is Hastrain or MDJ could look into this problem.
Any feedback would be appreciated!
Thanks
Click to expand...
Click to collapse
I have the same problem like you. Everytime I tried to use my wintec calss 10 sd card for the android, the system will lag and have BSoD. When it wake up from sleep mode, it is very laggy. So I think the HD2 Android does not support using the Calss 10 Card.
PS. I tried the class 10 in window Vista but it doesn't have any problem. Therefore, I am sure it's not the card problem.
Perform a full disk check and also a benchmark.
Compare it to your Class 2 card.
Then proceed to copy 2 gig of data to it. If it is class 10 it should sustain 10MB/sec for the entire copy. If not you may see 10 at the start but then it slowly gets slower. Also the card will get very hot.
Its starting to get very difficult to get genuine cards. I have a number of Class 10's. One from ebay and another 2 from local stores. All are fakes.
I have a class 4 which is the best I have got so far. Can copy GB's to it and it stays constant for the whole copy. Others start of good but 1/2 way the card is really hot and only getting 50kb/sec
In my experience, only 3 card brands work, sandisk, samsung and toshiba. Kingmax, wintec and patriot didn't. I guess the class didn't matter.
Sent from my HD2 using XDA App
mattfmartin said:
That's not your card. That happens to all class cards on all builds. Some people say its fixed but that is straight BS. Like you, I wish it was fixed once and for all.
Click to expand...
Click to collapse
Its device-dependent.
My old HD2 had loads of lag when "waking up" but since I broke it and got a new one, I have had almost no wake-up lag. The longest I ever have to wait for the screen to come on is 2-3 seconds, and usually its less.
Perhaps different microSD cards exacerbate the problem, but the underlying problem is in your HD2 itself. I use a Class 6 card myself.
Been using a class 10 card ever since I got my HD2 in the summer. Works fine here..
It's a Kingston class 10 SD, dunno if that helps
jose makalolot said:
Is the class 10 also a sandisk card?
Sent from my HD2 using XDA App
Click to expand...
Click to collapse
I have 3 sdcards
Sandisk 8GB Class 6 (write ca. 7mb/s) freezing
Sandisk 8GB Class 4 (write ca. 5mb/s) freezing
Sandisk 8GB Class 2 (write ca. 2.5mb/s) testing know !!! I give in few hours feedback.
I also experience slow wake ups with both of my class 6 cards as compared to my class 2 16 gig. On my class 2, wake up is instant. On my class 6 cards (4gig and 8gig), wake time is approximately 3 to 5 seconds. I really wish someone could figure this out because of the difference in file transfer speeds; my class 2 is almost unbearable.
It would be interesting if you could all try using this build over here:
http://forum.xda-developers.com/showthread.php?t=870518
Darkstone's build puts everything into RAM so that your SD card shouldn't matter. Why don't you report back and tell us if that fixes your crashing/sleep problems?
nimsim said:
Been using a class 10 card ever since I got my HD2 in the summer. Works fine here..
It's a Kingston class 10 SD, dunno if that helps
Click to expand...
Click to collapse
I think the key factor is to stay with quality name brand cards. My class 2 is Sandisk and my class 6 4/8gig are off brand. I'm going to try different format settings and see what I can come up with. I post back if I find anything significant.
pkchips said:
Its device-dependent.
My old HD2 had loads of lag when "waking up" but since I broke it and got a new one, I have had almost no wake-up lag. The longest I ever have to wait for the screen to come on is 2-3 seconds, and usually its less.
Perhaps different microSD cards exacerbate the problem, but the underlying problem is in your HD2 itself. I use a Class 6 card myself.
Click to expand...
Click to collapse
I think you are all forgetting my post.
The SAME sd card can be fast in one HD2 and crap in another HD2.
hi
probably your sd card is abnormal cause some of the kingston and other cards are made with errors,i had a similar sd card from kingston i dont know whatever i did with it formatted it multiple times it never booted an
android build,i booted in ubuntu and used disk utility it had a lot of errors then googled and came to find out that there were batches of kingston cards with similar errors coz 1 tech support guy in an fabrication organisation found it it and they sent all the batch of their cards to kingston for replacement which kingston did,i am using the card in garmin gps as storage i think these error cards see the batch number and see other original cards they are slightly different with their numbers as well as letters you can google it and find it out.thats why be careful from where you buy it.
try using disk utility in ubuntu you may find out what is wrong with it call the company and try to replace it
Fake cards
What I was alluding to in my previous post was all the name brand cards are suffering have fakes. Right down to holograms etc on the boxes.
Even retailers are getting caught out as the shipments are getting hijacked on the way and good cards are being swapped for fakes.
Very simply you can take a class 2 card and change the clock to run at high speed. Runs great for the few first seconds however quickly overheats and starts to fail with write errors etc.
I have "Genuine" Sandisk and Kingston cards here. Both bench great but when copying a large amount of data to it it gets hotter and hotter. Eventually crawling at ridiculous speeds. Keep pushing it and I start getting write errors.
Finally picked up a genuine Kingston. Only a class 4 but after 4GB sustained writes it is still only warm and pushing 4.1mb/sec.
Compared to my Sandisk (With hologram) Class 8 which can only do 200kb/sec after 1GB of data. Eventually will fail before 2gb ram.
Yanardag said:
I have 3 sdcards
Sandisk 8GB Class 6 (write ca. 7mb/s) freezing
Sandisk 8GB Class 4 (write ca. 5mb/s) freezing
Sandisk 8GB Class 2 (write ca. 2.5mb/s) testing know !!! I give in few hours feedback.
Click to expand...
Click to collapse
Ok i have tested the Class 2 card. It freezes too.
I find the freezing comes after ~10min. Before 10min.
Is nothing from this cards freez the lockscreen.
I think wlan is major problem. With wlan off is nothing freezing,
Mobile data i have not tested.
wlan = wifi ?
Do class 10 sdcards is better than class 2 sdcards for running wm7 on hd2?
It would be interesting to know what the fast card is or if there is ant difference, my 4GB class 4, can become laggy at times.
In my experience with 4 different MicroSD cards class does not matter at least with Android. More accuratly Class is not a good indicator of how well the card performs he way it is used in the phone. My worst performing MicroSD card is a class 4 PNY. My best performing card is the 16gb class 2 that came with the phone. I have another Class 6 and Class 2 that are somewhere in the middle. This is based upon my own personal testing using load times of various android builds. My Class 4 is almost unusable compared to the other two, it's super laggy when it's accessed.
It's the random access speed that makes a difference in wp7... and class has nothing to do with that. Actually I read that higher class cards can have worse random access speed because the card makers use special tweaks to get high write speeds which cause random access to lower. You will probably definitely have better luck with name brand. Most sandisk class 2 seem to work well.
It's the same with running android from sd, I think. The random access time would be the most important when accessing many small bits of info from different parts of the card like running as os would do. Thats probably why people always had better luck running android from lower class cards. Some benchmarking apps can get a cards random access speed.
following this thread,,im using the 16gb class2 card.. wp7 is laggy and annoying..
other than that,,its good
My phone is running fine with 16GB class 2 sdcard except some random reboots. Yesterday, it happened 3-4 times, today not at all
Hi guys
Lovin WP7 but there is one thing that is really bothering me, the Market is really slow to load pages and to navigate around the UI.
It is the same on both 3G and WiFi, it is definately not my connection.
Everything else seems to work really well
Anyone else have this problem or know a solution?
Thanks
I have the exact same problem.. Scrolling is laggy, and the market needs really long to load new apps..
Using a compatible SD card fixed this issue for me
most likely it's your sd card, get a new one and try it.
Any other tips anyone?
Piemole said:
Any other tips anyone?
Click to expand...
Click to collapse
No, it's probably your card. Especially if you get lag when scrolling. When using a class 4 kingston, it was laggy for me, but once I switched to class 2 sandisk, it was supersmooth, no lag at all. Get a class 2 sandisk.
Cheers for the help everyone, guess i am off to get a new card.
Thanks again
zarathustrax said:
No, it's probably your card. Especially if you get lag when scrolling. When using a class 4 kingston, it was laggy for me, but once I switched to class 2 sandisk, it was supersmooth, no lag at all. Get a class 2 sandisk.
Click to expand...
Click to collapse
how many GB for your class 2 sandisk?
I got no lag on sandisk 8gb class 2, but lag on 16gb class 2.
waichai said:
how many GB for your class 2 sandisk?
I got no lag on sandisk 8gb class 2, but lag on 16gb class 2.
Click to expand...
Click to collapse
My 16gb class 2 sandisk worked fine. Im using a 32gb class 2 sandisk now partitioned with 21gb for wp7 and 8gb for android, and both are running smooth.
But there are different model numbers for cards of same class and brand that may have different random access speeds, which is what effects wp7 performance. They use different chips from different factories and sources depending on when and where they were produced, and since random access speed isn't kept track off and isn't consistent, they can vary greatly even if the card is same brand and class. Everyone is concerned about sequential read and write speed, which is what they are classed by, but that isn't as important as random access speed when running an os off the card. Actually higher class cards tend to have worse random access speed.
Sent from my HTC bravo using XDA App
So Ive been using the 16gb Class 2 sd card that came with my HD2 for WP7 and I havent really had any problems with it. Occasionally it reboots for no reason, but aside from that, its perfect. However, my friend just gave me his 4gb Class 4 card. Should I keep using the 16gb or reset my phone with the faster 4gb?
simple test, all sd cards work differently
my Nokia 4GB Class 6 is better than may Sandisk 16GB Class 2
Xbox Live Installation: ( only the installation without download )
Nokia 4GB Class 6: 1:23 minutes
Sandisk 16GB Class 2: 9:41 minutes
peace warhead said:
So Ive been using the 16gb Class 2 sd card that came with my HD2 for WP7 and I havent really had any problems with it. Occasionally it reboots for no reason, but aside from that, its perfect. However, my friend just gave me his 4gb Class 4 card. Should I keep using the 16gb or reset my phone with the faster 4gb?
Click to expand...
Click to collapse
Class 2 cards usually work better for wp7. Actually class means nothing when it comes to wp7... you want good random access speed for wp7 to run smooth. Many times, the tricks that manufacturers do to their cards to get higher sequential write speeds will actually reduce the random access speed. They don't keep the random access speed consistent on any of their cards as that speed isn't rated, so even cards of the same brand and class can differ greatly from batch to batch. A card made one day may run wp7 well while the same card made a month later may not. So far it seems class 2 sandisk are the most consistent in keeping good random access speed, so if you are going for a card for wp7, go for class 2 sandisk with model numbers ending in A11M. If you already have a card that works well, no reason to switch unless you want to change the size, because there's no way to guarantee a card will work well until it's tested.