Samsung MB-MC256DAEU 256 GB EVO Plus MicroSDXC UHS-I Grade 3 Class 10 Memory Card with SD Adapter

Perfect for my GoPro, just slided in and it worked magic, didn't asked for reformat. Good price and good speed. Writing this review after my using experience, its a personal experience which I am very satisfied. Obviously can't say what may happen in 3 to 6 months use. Currently Fantastic

I am using this in an HTC One M9; everywhere I looked the Tech Specs said that the phone would accept external storage of up to 128 GB. Or up to 2000 GB (2 TB), depending on the website you happened to visit. I bought the card anyway, inserted it into my phone and was rewarded with an additional 238 GB of storage which I use to backup important data (encrypted and compressed) from my PC, including all My Documents/Music/Photos/Videos and .pst's etc.There is currently a 512 GB SanDisk MicroSDXC card available (SanDisk Extreme PRO 512 GB SDXC UHS-I Memory Card - Standard Packaging) for those of you that need a little bit more storage space.I've not benchmarked the card, but I have not noticed any slowdown in transferring music, files or photo's to and from my phone. All in all a great card with loads of storage space.

I have used it to expand the internal SSD drive of my MacBook Pro 15 (formerly used for my MacBook Air 13.3). It's very nice, so far no issues. Just remember to format it according to Mac standards (journaled) before using it. At times might be detected (few times has happened with my Air but not so far with my new Pro 15). easily overcome by restarting your system.

Great purchase and quality from evo/samsung

I need to say from the get-go that I'm not using this card in a phone but inserted in a Microsoft Surface Pro and so far I cannot fault it. I loaded it up with about 78GB of movie files (averaging about 3GB per movie - largest file 5.6GB) and 70GB of music (smaller files averaging about 6MB) and it accepted all that data flawlessly. Testing with Crystal DiskMark I get 80MB/s sequential read speed and 74GB/s sequential write speed (using 1GB data). It basically doubles the data capacity of my Surface. Now, I realise the performance is nowhere near that of the internal SSD but if you're using the card as a mostly read device, like I am then the performance is more than adequate. I haven't tried watching 4K movies from it, but standard 1080P with 5 channel DTS sound track works perfectly.

Yay! 256gb of storage .. sure glad I don't have an iPhone and have a Samsung Galaxy s8+ (also worked on my Zte Axon elite a2016 - which says it only supports up to 128gb)Tested reading, writing on both the phones for the last month - works perfectly!Now there is a 400gb version hmmm ... tempting

Great card. Worked straight out of the box, no formatting or faffing around. Using it to drag and drop FLAC music files from a MacBook Pro to use in an iBasso DX 50. Transferred about 200gb files over in about an hour. Brilliant product.

POOR - Lots of errors when transferring and several file "unreadable" I went for the Samsung brand because I thought they were a good company, trying to get support from them was a nightmare, I don't think I will buy any Samsung products again!I tried another brand and no problems at all, of course I cannot return it as the pack has been opened by cutting (no other way to do it) so I cannot return the product.I made several "test calls" to support as we have been brand loyal to Samsung till now, for each product the support was the same, extremely poor, it seems they must source this out as the "techs" had no idea about the products.I think paying that premium in price for what I thought was a premium product and company, proves that to be rubbish, I purchased another product from another company and it failed after two weeks, without question I had a replacement the very next day followed by a call to check I had it and all was resolved - That's customer service and support