Samsung 128GB EVO Plus UHS-i Class 10 Micro SDXC Card with Adapter up to 80MB/s (MB-MC128D)

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Product Specifications

Up To 80Mb/S Transfer Speed
Great For Cell Phones, Smartphones, Android Tablets, Tablet Pcs
Great Speed And Performance For Full Hd Video Recording, High Resolution Pictures, Mobile Gaming, Music And More
Water proof, Temperature Proof, X-Ray proof, Magnetic proof
Compatible with devices with micro SDxC slots.

Product Description

Fast read & write speeds Samsung’s EVO Plus microSD Card has added memory capacity and multi-device functionality so you can focus on life, not technology. This UHS-I Speed Class 1 (U1) and Class 10 compatibility card is perfect for capturing photos and for video recording & playback in Full HD. And with read & write speeds of up to 80MB/s & 20MB/s respectively, apps and videos load quicker and files transfer faster. A perfect partner Get the most out of the latest smartphones, tablets, and cameras. This memory card works perfectly with even the most advanced devices to protect your memories for life. Full HD video Capture the moments that matter. With the Samsung EVO Plus microSD Card, you can shoot as many rich and detailed Full HD videos as you want on your smartphone, tablet, or camera, confident that each memory will be safe. Play your videos back on your Full HD TV or monitor and relive the experience as vividly as the day it happened.

Product Reviews

Great read speeds, and acceptable write speeds

I purchased this micro SD SD card a few days ago, mainly for my smartphone (Axon 7), mainly for storing bulk data, and 4K video.Performance: For my tests, I am using a UHS 1 USB 3.0 card reader, as it supports the full read and write speeds available in the UHS-1 standard.For a more realistic performance review, I do a 100% fill, as with some lower quality cards, they may offer high initial speeds, but what happens to some, is that the write speeds may drop by up to 50% once all of the NAND is dirty (around 25-50% filled); this product does not have this issue.Even if you do not care about the performance, I recommend that you always do a 100% fill on any flash storage that you buy, as the one thing counterfeits are unable to do, is offer consistent write speeds for the entire length of the drive.The performance is very consistent for TLC NAND storage, with it largely able to remain close to its 20MB/s advertised on the packaging for the entire length of the card (100% fill). This one only has a marginal difference as the drive fills, which points to the NAND being fast enough saturate the storage controller while writing directly to dirty TLC flash. This means that even when the drive is mostly filled, performance will be similar to how it is when empty (only marginally slower).Read speeds averaged 81.9MB/s, with a minimum of 77.6MB/s, and a maximum of 83.4MB/sWrite speeds averaged 20.7MB/s with a maximum of 22.3MB/s, and a minimum of 18MB/sThose occasional changes in write speeds are due to the TLC flash being used.After performing my 100% read and write, I then proceeded to format the card suing my phone, and then transfer some data to the card (23GB of music, photos, and videos). I then ran a benchmark using crystal disk mark. This is to more accurately represent the type of performance that the user will see when there are a bunch of files on the card already, since that is the state that the card will be in for much of its service life.Performance for all flash memory drops slightly when data is already on the drive, thus I feel this will better represent the experience that the user will have on a day to day basis.For smaller bursts of writes as done in crystal disk mark, we can see that it is able to exceed its advertised write speeds by a larger amount, while read speeds remained slightly lower than the 80MB/s rating. 4K reads and writes are comparable to many other cards in this price range, and the only real takeaway from this is that these cards should not be used to store applications which rely heavily on 4K reads and writes, as even the fastest UHS 1 cards, will still only offer a tiny fraction of the 4K random performance of even the eMMC NAND found in modern low end smartphones.Overall, I am satisfied with my purchase, and would recommend the card to anyone looking for some extra bulk storage for their smartphones, as well as any netbooks. The performance is good enough for capturing 4K video. With ample space, there is no need to compromise on the quality of the video you record, the music you save to your device, or the videos you store on your device.Update ¹⁄₂₈.2017:The card was working great for a while, and offered good enough write speeds and IOPS to ensure that the camera in the phone would not have to wait on the card, but then the card decided to fail in a very annoying way. It seems that when the card feels that it is having any issue, it permanently places its self in a read-only mode. When this happens, the card cannot be formatted, and files cannot be erased from the card.To make matters worst, the card has to be mailed in for an RMA like that (not the best if you have a CWM backup of your device on the card).Overall, I am currently going through the RMA process with them, and will see if the replacement card runs into any issue.Overall, this is the first model of micro SD card that I have ever experienced failing.Update 2/6/17:I received my replacement card, I will keep an eye on how the reliability turns out for the replacement.I also uploaded some ATTO benchmark results for the card.READ MORE

I love the expanded memory… Couple of points I discovered in the process tho

Works just fine… USB connectivity from the music source to the phone was the weak point.So… Advice: Put all your music or data using the sleeve and transfer w/o USB, as much as you can on the initial install.I ran into pains when I removed the card to add albums a 2nd time… (it screwed up my settings and file structure on the phone)If you use USB to write material to your device, it will be slow, but it won’t mess with the file structure on your “samsung” phone.If you have any other phone than samsung, this might not be an issue, unless its an Apple, because you won’t have upgradable memory, so you’re screwed.

True to form, be wary of boastful speeds but does live up to expectations for a Class 10 Micro-SD

Whats to say, it’s an SD card that functions at the reported speeds (under the best conditions when no bottlenecking is involved) I installed this into a Surface and tested the speed transferring between the card and the SSD in the tablet and although the avergae read/write were below the advertised speeds, the peak speeds did compensate.

Best Thing Since Beer Kozies

I use mine in a Samsung Galaxy Tab A tablet and, so far, it’s been flawless. I’ve always had great luck with Samsung microSDs and can certainly recommend this 128GB EVO.

Works. Seems to drain the battery faster when the media service runs too much

It works, but sometimes my phone (old Galaxy S5) is a turd and runs the media service way too much trying to index this thing, so it reduces battery life. I’m sure there’s a way to fix it, but at some point you just don’t want to invest any more time in researching potential solutions.

Reliable external storage for my Samsung S8+

Works well is very fast and actuallyholds the right amount of sdata on the label minus the overhead Samsung makes great products and this is exactly what my new Samsung Galaxy S8+ needed

Works great. No issues

Bought this for use with a Raspberry Pi 3. Works great. No issues. Was able to load all the games I have for RetroPie (over 500 games) and still have 12-14 GB space to spare. Formatted to FAT 32, copied image for 32 GB original card to new card then used gparted to resize partitions. Setup LibreELEC with 4 GB and gave the remaining space to Raspbian where I run RetroPie.

Does not last very long in a smart phone.

Lasted less than 5 months, now corrupt, and unable to format/erase etc…

Great card, fair price.

I only buy Samsung’s memory cards now. They seem to be the fastest and most resilient in my use. Plus the prices Amazon has for them in varying capacities is always fair to me.