Silicon Power 128GB MicroSDXC UHS-1 Class10, Elite Flash memory Card with Adapter (SP128GBSTXBU1V20BT)

I purchased this for use in my Honor 8 that I use for travel. Plenty of space for all of my music (20GB+) and movies. Transfer speeds are still slow compared to other media formats, but for use in a phone that's only noticeable when with larger file transfers. This was competitively priced and while I considered a 200GB card, the price jump was considerable. The only slight negative I noticed is that compared to the Samsung 128GB microSD card in my primary phone this had almost 2GB less of actual usable space (about 117GB total). I don't know if this is formatting or the physical design of the card. In the scheme of things though 2GB isn't all that much.

Considering all the positive reviews for this product (mainly for smaller sized cards), I really wasn't expecting this one to be what it was. I purchased a 128gb micro SD for my phone. I put it in the computer and moved one folder (with 8 music files inside). I took out the card momentarily and put it back in. For some reason my computer (a Windows 10 Acer E 15--just a couple months old) told me the card needed to be formatted.Strange.So I formatted it. Began to put more files onto it, this time from the 64gb SanDisk from which I was trying to upgrade. At first I was getting transfer speeds of about 14MB/s, then it dropped to between 7 and 9MB/s. Then It dropped into the KB. Then 0 bytes. Suddenly it was having difficulty transferring each individual file to the card, and every 30 seconds I had to skip a file via the prompt.After watching it linger at 12% for 10 minutes or so, 0 bytes transferred, I cancelled the file transfer. I thought, maybe I just need to move smaller files. After all, I was trying to transfer about 2GB at a time (which has never been a problem with any other memory card or storage device I've ever owned, including a fake micro SD I accidentally purchased a month ago). So I copied and pasted a small folder containing a bunch of text files, 5MB. The prompt got stuck calculating the size of the folder to be transferred and never transferred anything...I've barely had this card one full day, and I've already requested a refund. I'll just bite the bullet and buy a real one in store. It's really not worth waiting for a replacement that'd probably reveal the same level of quality and slow speeds.Seems like the smaller cards yield better results--so stick with this brand if you're not looking for anything bigger than a 32 or 64. My experience with this 128gb? Utterly disappointing.

Works great for my Kindle Fire. I would recommend this sd card to anyone looking to expand their storage options. It's a little pricey, but after being duped by generic sd cards that don't come close to what they're advertised as being, the cost of the Silicon Power card is more than worth it.

Functions as a decent sd card just fine, but is too slow. UHS1 cards are fast enough that they should work as internal storage on android devices, but regular class 10 are too slow and will cause lag, crashes, and other errors. This card WILL NOT function properly as internal storage on my Nvidia Shield K1 tablet, have had nothing but problems.I will have to format it back to external and use a program like link2sd to store non essential apps on this card.

Wouldn't work in my son's tablet. Has worked in other devices.

I can't rate this as a 5 star product. I specifically bought this card for a Raspberry Pi project. I needed a 128gb card and this was the cheapest one available with prime shipping. I understand that no sd card is going to be a full 128gb but most come in around 119gb which is the size of the Retropie image I'm using. My particular card was 117gb thus making it too small for what I bought it for. I bought a 128gb Samsung card for my project locally and am using this card for storage on my Nintendo Switch. If you need it for random storage like a camera, video game console, or cell phone it's fine. But, for a 128gb Retropie image this won't work.

This brand of microSD cards is great. They always have high capacities for prices lower than everyone else while also not being sketchy noname cards with fake/hacked sizes. Only problem I could see, which doesn't matter for me really but may bother you, is that the printing on the card itself rubs off really easily so you could potentially not know which card it is if you have multiples.

I had purchased this card a while back with the intention of using within my Nintendo Switch system. After reading some reviews, it seemed to be an acceptable choice. When the card came, I noticed it had some issues being detected every now and then, but I did not do extensive testing. My laptop is old, so I thought it was simply the SD card read being unable to detect this card well. My Nintendo Switch arrived and I had tried to put this card in and at first, it seemed to detect it fine. The console indicated that I needed to update in order to utilize this card. After updating, it did not detect the card at all. No matter how many times I reset the system and inserted the card. I then tried to use my SD card adapter to put it into my desktop and format the card, and all formatting tools seemed to fail, as the connection to the card was not stable. Do NOT purchase this card. Pay a little bit more and have a more reliable product.

Lo compré para Nintendo switch y no quería invertir tanto, funciona de maravilla. No es la más rápida y se nota al cargar los juegos, los cuales tardan unos 2-3 segundos más, pero sin problemas corren. La recomiendo por precio, ya con ella 3 meses y excelente

Excellent

Good till now.

Esta Excelente. No da ningún problema de escritura y desempeño. La envían sellada incluyendo un adaptador de la marca y bien protegida por un empaque duro de cartón. Además de que llegó pronto. Volvería a comprarla.

Para el precio ($345 MXN) y el almacenamiento es de las mejores opciones que se tienen. Si bien en clase 10 las velocidades reales son mucho más bajas, sin embargo para un telefono es mas que suficiente incluso para grabar a 1080p con 60FTS.Pagas por lo que recibes, la recomiendo si lo que buscas es ampliar tu memoria para música, videos y demás.(Escritura 8 MB/s, lectura 20.1 MB/s --Promedio--)