Top positive review
SanDisk 32G Type 10 Memory works great.
Reviewed in the United States on November 26, 2018
I use these 32G Micro SD cards with SD adapters all the time with my cameras, phones, 3D printers. I also have used SanDisk SD and micro SD cards all the way up to 400G. I've never had a single failure from SanDisk. They are exceptional memory modules. The worst brand I've tried is PNY which almost always fail before a year has gone by. So yes you will pay a little more for these than you will for the cheaper brands. But I can tell you that these will last you longer and have less errors than the cheap brands. These modules are type 10 speed and are well suited to cameras, cell phones, extra PC or laptop or tablet storage. While the actual cards here are micro SD cards, having the adapters that come with these allows you to use them in slots that accept either standard SD or micro SD. The SanDisk brand is one of the better memory brands currently being made. So spend a little more for these and you'll likely be using them years from now.
A lot of people buying these seem to have gotten fakes judging from the reviews. Mine were examined and tested for speed and actual size and do seem to be the real ones as they passed all the tests and performed at speeds these are supposed to. But I would advise everyone who gets these put them through speed tests and tests of actually storing data in every cell to be sure. If your package graphics looks a little off or labels don't match what the chips look like in the ads, that's your first clue. You can get memory and drive testers for free on the internet if you don't have them. Test them thoroughly before committing them to use. Many of the fakes will tell you that they are a higher G but only provide a much smaller amount and cause corruption of data if any more is used. It is most common with the normally higher priced high G cards. But sometimes some unscrupulous distributors will know they have fakes (even if they didn't actually fake them themselves). And instead of clearing those fake ones from stock, like they should, they'll knowingly mix them in with good ones and sell at low dollar to end sellers like Amazon or stores. These end sellers think they are getting a good deal and pass that savings on to their customers. But the customers then discover the fakes and demand refunds. The manufacturers will usually just refuse warranties as they did not make these fakes or sell them. So the end sellers are left responsible to their customers and take the major part of the lost revenue. Unless every seller looks these over one by one (very difficult to do) or permanently blackballs distributors that do this to them, this practice will likely continue.
There is a catch to using SD type memory cards without ruining them. It is imperative that you properly eject/remove them only when power is down or when your OS is told to shut them down by software command before actually pulling them out of the sockets. When people complain a lot about lots of their memory modules dying, you almost always find out they refuse to use the OS approved device removal prompt. If your device does not have a way of properly shutting them down via software, you should power down the device before inserting or removing them. Also be careful with SD slots that are spring loaded. Not getting them to spring clip into place can ruin them and the device if power is on or the chip is inserted upside down from the devices intended direction. Use SD cards correctly and you won't have a lot of data losses. Pull them out without properly ejecting them is almost guaranteed to kill data each time you do this.