Develop Bugs

[Q] Which Memory card you reccomend?

I already have a sandisk 16 GB class 4 card with that annoying "SD card unexpectedly removed" issue.
I've heard that there is no such problem with Class 10 cards.
So i shortlisted these 3 cards (class 10). Can you tell me that will they work fine without this issue? And which one would you recommend?
This is my second card in 2 months :/ I just wanna be sure..
Please help me. :X
Cards are:
1. San Disk Ultra Class 10 - I had sandisk before and I'm afraid that it'll have the same problem again.
2. Transcend Memory Card MicroSDHC 16GB Class 10 - I've read reviews but is the performance better than sandisk?
3. Strontium Memory Card 16 GB Micro SD Class 10 - Seriously Never even heard of the company but it's the cheapest class 10, and i can save 200 bucks. Has anyone tried this one?
Thanks...

sukhjit321 said:
I already have a sandisk 16 GB class 4 card with that annoying "SD card unexpectedly removed" issue.
I've heard that there is no such problem with Class 10 cards.
So i shortlisted these 3 cards (class 10). Can you tell me that will they work fine without this issue? And which one would you recommend?
This is my second card in 2 months :/ I just wanna be sure..
Please help me. :X
Cards are:
1. San Disk Ultra Class 10 - I had sandisk before and I'm afraid that it'll have the same problem again.
2. Transcend Memory Card MicroSDHC 16GB Class 10 - I've read reviews but is the performance better than sandisk?
3. Strontium Memory Card 16 GB Micro SD Class 10 - Seriously Never even heard of the company but it's the cheapest class 10, and i can save 200 bucks. Has anyone tried this one?
Thanks...
Click to expand...
Click to collapse
Im using strontium 16gb class 10 card... i think you only didnt heard about that brand... and yes it is quite cheaper than sandisk and transcend.. im getting write speed about 7 to 10 MB/s... sometimes even higher... normally you will get above 6 ( incase of large no. of files)...
Read speed about 18 to 20 MB/s .....
In addition I also bought that card from Flipkart... 90% positive reviews... so only i bought that card... and i didnt got any trouble with that.... Affordable and best card in this price range.... :good:

Kishoke said:
Im using strontium 16gb class 10 card... i think you only didnt heard about that brand... and yes it is quite cheaper than sandisk and transcend.. im getting write speed about 7 to 10 MB/s... sometimes even higher... normally you will get above 6 ( incase of large no. of files)...
Read speed about 18 to 20 MB/s .....
In addition I also bought that card from Flipkart... 90% positive reviews... so only i bought that card... and i didnt got any trouble with that.... Affordable and best card in this price range.... :good:
Click to expand...
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Are you sure you never got unexpectedly remove error? :/ Sorry for asking again coz i don't want a wrong purchase again. :X

sukhjit321 said:
Are you sure you never got unexpectedly remove error? :/ Sorry for asking again coz i don't want a wrong purchase again. :X
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nope... i didnt got any error like that... what if the error is your phone's prob ???

Kishoke said:
nope... i didnt got any error like that... what if the error is your phone's prob ???
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Actually my old Kingston 8 GB never gave such problem. So it can't be. Also many users in XDA are having same problems.

which card should i buy microsd 64gb??

any sugession ..which if for atleast 5 years??

nabilsweet007 said:
any sugession ..which if for atleast 5 years??
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sandisk ultra class 10.. genuine one of course.

among4239bulan said:
sandisk ultra class 10.. genuine one of course.
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i have seen many complaints of scan disk

nabilsweet007 said:
i have seen many complaints of scan disk
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never had problem with mine. personally i prefer sandisk over kingston. nevertheless both is good,just make sure it is genuine and the higher the class,the better.

Sandisk or Samsung.

I had kingston worked for only 20 days
What I do now with that card.it doesnot save data properly...through card reader or sd adoptor .meand I m saving file 5.4gb data it saved only 930mb then eroor ..what do I do

nabilsweet007 said:
What I do now with that card.it doesnot save data properly...through card reader or sd adoptor .meand I m saving file 5.4gb data it saved only 930mb then eroor ..what do I do
Click to expand...
Click to collapse
try formatting it first and see if problem persist.. if it still does, check your warranty whether you could return it and get a new one for free,

among4239bulan said:
try formatting it first and see if problem persist.. if it still does, check your warranty whether you could return it and get a new one for free,
Click to expand...
Click to collapse
its brand new but no warranty because i purchased from a friend..he has no warranty.now

nabilsweet007 said:
i have seen many complaints of scan disk
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Click to collapse
The complaints youve seen are not of genuine Sandisk products. Ive been using Sandisk cards for over 10 years now and not once have I ever encountered a problem. In the extreme event that the card may fail I feel Sandisk service and warranty are second to none..
GT N7105 with XDA Premium......that is all......

I had a genuine 64gb SanDisk. It failed after 4 months. Their service was good, they replaced it, but I cannot trust it in my phone anymore.
Got a 64gb Samsung instead. It comes with a10 year warranty.
sent from somewhere

my kingston 64 is waste..i have purchased scandisk genuine card 64 gb ultra .. i think note 2 corrupts 4 gb i think so

nabilsweet007 said:
my kingston 64 is waste..i have purchased scandisk genuine card 64 gb ultra .. i think note 2 corrupts 4 gb i think so
Click to expand...
Click to collapse
No there are many fake cheaper memory cards out there which tell you storage of 32gb but are actually 8gb or less and they tell brand is kingston or scandisk but its not
Sent from my GT-N7105 using Tapatalk 2

Ive have only ever used Sandisk from my first droid phone till now in every configuration and have never had one fail. I always buy them from the local Frys because its convenient.

i also have a sandisk 64 gb class 10 works very well although sometimes it transfer files slowly.

purchase any.. any brand card can die on note2. just try your luck and before purchasing do check your device goes into deep sleep and remove unwanted wakelocks. some unwanted wakelocks have killed (well it may be in just my case) 3 64 gb sandisk card but last one is working so far after i removed the wakeloks.

MicroSD Card

So has anyone bought an SD card for their oppo yet?
I'm tempted to get a "Transcend 64GB Premium Micro SDXC with Adapter Class 10 UHS-1" but not clear if it will work

aaminuk said:
So has anyone bought an SD card for their oppo yet?
I'm tempted to get a "Transcend 64GB Premium Micro SDXC with Adapter Class 10 UHS-1" but not clear if it will work
Click to expand...
Click to collapse
I have an A-Data 64GB Class 10 UHS-1 on mine since I got it and haven't had any issues yet so I'm assuming yours should be ok.... I could be wrong though

Cool, thanks for the information
Sent from my X9076 using XDA Free mobile app

I bought a Samsung Pro 64GB Micro SDXC for mine, works perfectly

McBeaker said:
I bought a Samsung Pro 64GB Micro SDXC for mine, works perfectly
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Oppo Find 7 X9077 @ 32GB Intern + SanDisk Ultra Class 10 microSDXC Ultra 128GB Disk:good:

I used this one SanDisk SDSDQU-064G-FFP Ultra 64 GB Class 10 Micro SD Card with SD Adapter
Working well

what file system do you use?

beton87 said:
what file system do you use?
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File system is exFAT for my Samsung Pro 64GB Micro SDXC

beton87 said:
what file system do you use?
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Yep, exFAT for me too.

blessingme said:
Oppo Find 7 X9077 @ 32GB Intern + SanDisk Ultra Class 10 microSDXC Ultra 128GB Disk:good:
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128gb here too. Love it.

Bought a Kingston Class 10 microSDXC 64GB Disk (with SD adaptor) - very reasonable at $49

MrColdbird said:
128gb here too. Love it.
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hey mr coldbird...did you unify that badboy and make your device totally awesome...

mrsynister1971 said:
hey mr coldbird...did you unify that badboy and make your device totally awesome...
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Click to collapse
Yeah.
http://www.oppoforums.com/threads/tutorial-unified-storage-layout-for-oppo-find-7a.17952/

Find 7 supports SDXC card upto 128GB, so yours should be fine. I recommend the U3 class card though.

Just got a 128Gb Kingston for mine. Will copy my data over tonight.

Just bought a new Samsung Pro SDXC UHS-1 microSD card.
512 GB
I formatted it to NTFS. Works great in the oppo find 7.
At least it does using ColorOS 4.4.2
TWRP does not recognize this NTFS format but the OS does. I find it totally amazing to have 512 GB of storage on this phone. Really nice.

Netpac 128G Class 10 - FAT32.....works flawless

Microsd getting unmounted and remounted

I just installed a new 128gb microsd (sandisk ultra), and for some reason it keeps unmounting then remounting a few seconds later. I tried formatting it but theres no option in the settings. Is there any way to fix this? Is it only an issue with cards > 64 gb?

I face the same problem with 64gb SDxc sundisk card!!!!!
Any help....... please

I had 64gb microsd fitted last few months, a Sandisk card. No problems at all. Recently fitted a Sandisk 128gb card from Amazon.
Had constant unmounting problem, reformatted to fat32, and still unmounting virtually every hour. Draining battery fast as well.
So, fitted 64gb Sandisk again, problem solved, it doesnt like 128gb card. 128card now in a Win10 tablet and working fine !

Although ASUS only qualifies 64GB MicroSD as max, you should be able to use up to 128GB as long as it is formatted as FAT32. Some users had their's work fine with this size.
Zenfone 2 supports microSD, microSDHC, and microSDXC, with speed class up to Class 10
Sincerely
ASUS_USA

Thanks for reply Asus_USA. It could be a compatibility issue, the card I tried was a Sandisk Ultra SDXC class10 (newest version) supplied by Amazon.
Has anyone else had any success with this microsd in the Zenfone 2, I have the 32gb, 4gb ram version.

I have a similar issue. Read the forums and it is obvious many asus ZenFone owners are experiencing this problem. Can't asus just admit the problem and fix it and announce the fix? Or is it a bigger issue that asus will not publicly admit to?

I thought I would chime in as I too am having the same issue with my phone. I put an sandisk 128gb sdxc card in my phone when I purchased the phone it worked fine until New Years Day when I got an OTA. Since that OTA, the 128gb card will keep mounting and un mounting itself. I put an 64gb card in and for a whole day, did not unmount once. Called amazon to replace the card thinking it was the card, amazon gladly replaced the card, inserted the card and it is still unmounting-remounting. Like I said before it worked for 1 month straight with no issues in Dec. before the OTA, but after the OTA, its intermittently unmounting-mounting. Thought Id chime in since ASUS was responding and noticing others having the same issue. Obviously its a software issue with ASUS.

There are already so many issues regarding to sandisk sd card on Zenfone, I used to have the same problem, then I replaced my sandisk with samsung, problem solved.

oktoaditya said:
There are already so many issues regarding to sandisk sd card on Zenfone, I used to have the same problem, then I replaced my sandisk with samsung, problem solved.
Click to expand...
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Thanks for your help! I kind of figured it was the sandisk card because I put a little 64GB sandisk card in and the phone wont even recognize that card at all. I put a sony 64GB in and it held perfectly for 1 day, no unmounts. Off to Amazon to purchase a Sony 128GB!

After updating the latest version 2.20.40.160, my micro SD Card Adata 64G is assembling and disassembling every hour.
In previous firmware version that did not happen.
Something bad that ulima update.

My Adata 64gb card did that on the previous update, and more often at times. With the latest, the problem ceased.
Sent from my ASUS_Z00AD using XDA Free mobile app

Niko of Death said:
I just installed a new 128gb microsd (sandisk ultra), and for some reason it keeps unmounting then remounting a few seconds later. I tried formatting it but theres no option in the settings. Is there any way to fix this? Is it only an issue with cards > 64 gb?
Click to expand...
Click to collapse
i have 16 gb and facing the same problem. Maybe the cause of this problem is the firmware it self. try to update to the latest firmware

Have you tried formatting it to fat32 and remounting it?
From what I've tested, exfat has given me issues. But I'm on a custom ROM (CM 12.1 based), so YMMV.
If you're rooted you can try Aparted on the Play Store and not bother with the PC route. Just make sure you know what you're doing!

bobcuspe said:
After updating the latest version 2.20.40.160, my micro SD Card Adata 64G is assembling and disassembling every hour.
In previous firmware version that did not happen.
Something bad that ulima update.
Click to expand...
Click to collapse
That latest update definetly caused issues with SD cards not over 64Gb but with specific manufacturers. Of course ASUS will not assist in this nor claim responsibility as this was in improvement update. Even though it was quite large for improvements. I would like to see what they say as even some 64GBs cards are not working either and they approve all cards upto 64GBs. Unfortunatley, your going to have to switch card manufacturers to get your card to work. I put a Sony card in and it works fine now. I could'nt get a 64GB sandisk to even recognize let alone the 128GB mounting/unmounting. Good Luck!

Having the same problem with 128 SanDisk (also class 10).
Looks like I'll have to buy a new card - am I better off with 64 GB or changing companies?

Yes.. it's a know problem, without a concrete solution... also me I purchased first.. read after... so I sold and I bought a kingston 128gb and since then, it works flawlessly (except it's 3gb less, but I seriously actually don't mind )
Στάλθηκε από το ASUS_Z00AD μου χρησιμοποιώντας Tapatalk

joshwex90 said:
Having the same problem with 128 SanDisk (also class 10).
Looks like I'll have to buy a new card - am I better off with 64 GB or changing companies?
Click to expand...
Click to collapse
Luckily I had a 64GB and a 128GB card and they both had issues. So I just left sandisk all together and went Sony 128GB and it works flawlessly. It just seems like sandisk and this phone does not get along.

Both of you that have 128 GB but other companies, no issues experienced at all? Are you also on the 32 GB version and which firmware?

joshwex90 said:
Both of you that have 128 GB but other companies, no issues experienced at all? Are you also on the 32 GB version and which firmware?
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Click to collapse
I have all sizes of sd card , 16,32,64,128 and 200gb...
I have both the 32gb phone and the 64gb phone. I have used exfat formatted sd cards, both 64 and 128gb, in both with no problems. I haven't tried the 200gb as I use that in my tablet but it is the ONLY Sandisk I have... All other cards are Samsung or the 128gb Lexmark. I have these as Sandisk had problems in other phones too... Never had a problem, ever, after changing away from Sandisk...
Sorry, should've added I'm on 178 firmware - the latest...

Asus_USA said:
Although ASUS only qualifies 64GB MicroSD as max, you should be able to use up to 128GB as long as it is formatted as FAT32. Some users had their's work fine with this size.
Zenfone 2 supports microSD, microSDHC, and microSDXC, with speed class up to Class 10
Sincerely
ASUS_USA
Click to expand...
Click to collapse
Thanks for the info, ASUS.
Currently I use KINGSTON 32GB SDHC UHS-I U3 with 90MB/s read and 80MB/s write. Tests in phone showed 110MB/s read and 63MB/s write speads with A1 SD Bench program. At first the were some problems like freezes but then i formatted it with ExFAT file system and all became normal.
https://www.kingston.com/datasheets/SDCA3_us.pdf

whats the best SD CARD?

SO apparently The SD card i bought (EMTEC MICRO SD XC 64GB) ISNT COMPATIBLE FOR BEING ABLE TO FORMAT AS INTERNAL CAUSE ITS NOT FAST ENOUGH WHICH DOESNT MAKE SENSE CAUSE IT STATED ON THE PACKAGE ONE OF THE FASTEST SD CARD. CAN SOMEONE PLEASE TELL ME WHAT TO LOOK FOR APPARENTLY CAUSE I GUESS I CANT GO BY WHAT THE PACKAGE ON THE SD CARD STATES. THANKS EVERYONE IN ADVANCE

SanDisk 128gb ultra working fine.
via [email protected]

Sandisk 64gb ultra here, working fine

Geiger's said:
Sandisk 64gb ultra here, working fine
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+1

I've recently been researching into this. Consensus is either the Samsung Evo Plus or SandDisk Ultra. Both priced about the same.
128GB for around £35, 64GB around £17.
Also make sure it's class 10.

New SDcards will have A classes, they are meant for installing apps on them, meaning they are optimized for smartphone usage. SanDisk already announced one in A1 class.