Secure Digital or a SD card is a storage tool which is considered to be external as it is not integrated into the electronic device. Nowadays, most of the electronic device comes with a SD card or at least a slot for it butt there are still some devices that do not have the option of using a SD card which is a huge disadvantage and is the reason why people tend to avoid such devices.
In this day and age, people always need more storage in their cellular phone which is why there are many companies that are producing great quality SD cards offering amazing functions.
PNY Elite 128GB Microsdxc Card
This particular card is considered to be the fastest micro sd card and there are some other great ones but nothing comes close to this one. It is a flash SD card that can be used with cellular phones, tablets, cameras and other devices that are designed with a slot and functions for it. Perhaps the best thing about is the amount of storage that it offers i.e. 128 GB to be precise which is a lot of storage for anyone using any electronic device for it. Since the transfer speed of the SD card is so high, you would not wait a long time to transfer all your files from your phone storage to your SD card.
SanDisk Extreme 32GB microSD
Sandisk is a pretty good company and is famous for its SD cards and this particular version is liked by the public a lot. It actually has a 90 MB/s transfer speed which means that you can actually shoot using continuous burst mode,full HD and ultra 4k HD video without even a little bit of trouble.