Samsung’s Galaxy S8 launched in 2017, which means the former flagship will end Android support over the next year. However, the Galaxy S8 remains one of the best smartphones you can buy. Its excellent specs put it firmly in the upper mid-range in 2019, while its design remains one of the best-looking on the market.

It is also worth noting the Samsung Galaxy S8 is now affordable, so you may be interested in still purchasing the Galaxy S8. If you are a power user, you may also need a memory card to expand the storage on the handset.

The Samsung Galaxy S8 supports storage expansion through a Micro SD card port. Whether you are buying a new S8 or still have the model you bought previously, there are some excellent Micro SD cards available for the smartphone.

Best Samsung Galaxy S8 MicroSD Cards

We all know Samsung Galaxy S8 supports microSD cards up to 256GB of storage capacity. This means you can expand your Samsung Galaxy S8 storage using an external microSD card up to 256GB. Where you can store around 32000 MP3 songs, or 85000 Images(average 3MG file size or around 30 hours of HD video recording on it.

If you are planning to buy the best micro sd card for galaxy s8, below are some of our recommendations:


Lexar High-Performance 633X 256GB

This might be the biggest question you will have is, what is the largest memory card for galaxy s8. As discussed it supports card up to 256GB & there are a lot of 256GB microSD cards available to choose from.

Lexar High-Performance 633X 256GB

Lexar is a very popular brand for cheap and affordable microSD card manufacturers. This microSD card has a size ranging from 16GB to 512GB microSD card. If we talk about the data transfer speed of this microSD card, you will get 95MB/s data transfer speed on this card which is quite good for using it with a mobile phone.

Out of a lot of variations of Lexar MicroSD cards, the 256GB variant will be the most suitable galaxy s8 sd card size to choose from.

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Samsung Evo Select

Samsung Evo Select Card

The absolute best place to start when looking for a Samsung Galaxy S8 Micro SD card is with the company itself. Samsung develops its own Micro SD cards for both its own devices and other OEMs. The EVO Select is among the company’s best, focusing on speed and reliability.

For example, the Evo Select delivers read speeds up to 100MB/s and write speeds up to 90MB/s, allowing for consistent performance. Write speed allows the device to transfer data onto the MicroSD card more efficiently, while read speed moves data from the card to another device (such as a PC) more quickly.

Samsung has also included 4-proof protection against water, dust, shock, and extreme temperatures.

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See also: Best Samsung Galaxy S8 Charging Cables


SanDisk Extreme

SanDisk is the leading name in the memory market and its Extreme Micro SD card is an excellent choice for the Galaxy S8 & Samsung Galaxy S7. While the company produces the Extreme Pro for ultra-fast performance and the Ultra for affordability, we think the SanDisk Extreme treads a nice line between the two.SanDisk Extreme Card

This Micro SD offers high-level performance without compromising on the price. With 160MB/s read speeds and 60MB/s write speeds, the Extreme lives up to its name with a blistering performance from UHS Speed Class 3. Like most SanDisk memory solutions, the card is also temperature-proof, water-proof, shock-proof, and x-ray proof.

SanDisk also provides RescuePRO Deluxe data recovery software to help you recover lost files. Furthermore, the Extreme is compatible with the company’s Memory Zone file management application.

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BraveEagle MicroSD

Affordable but competitive on power, the BraveEagle range of MicroSD cards is becoming increasingly popular. Before getting into the specs, isn’t this the best-looking Micro SD card ever? Ok, no one really cares about memory card design, but the pleasing aesthetics are a nice touch.BraveEagle-MicroSD Card

Moving onto performance, the BraveEagle MicroSD provides a reading and writing speed of 80MB/s, making it a consistent option in terms of transferring data from images and to PCs. Like the others on this list, the card is also X-ray proof, temperature proof, waterproof, and shockproof. However, the BraveEagle stands out for also providing magnet protection.

More affordable than Samsung and SanDisk without scrimping on performance, the BraveEagle MicroSD is a worthy alternative.

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Importance of Reading and Writing Speeds

When discussing all our Samsung Galaxy S8 memory card recommendations, we often mention the read and write speeds of the cards. That’s because these are the most important aspects of a card’s performance:

Write Speed:

Write speeds are important and can have an impact on device performance. For example, if you take a photo on your Galaxy S8 the device creates a data buffer to briefly store the image data.

However, this buffer storage is limited so if you are storing data on a memory card, the device will send it from the buffer to the card. The faster the card can write data from the device, the less chance this buffer will become full and compromise device performance.

Read Speed:

While not as important in device performance, read speed can help to save you a lot of time. Memory cards store data on your smartphone, but also let you pass that data to another device, such as a PC.

The pace at which the card can pass data to another device is called the read speed. Higher speeds mean more efficiency and the difference between waiting for data transfers for seconds or minutes.

Your Turn

Are you using any of those memory cards with your Galaxy S8 or planning to buy a new one for your device?

Share your thoughts in the comments section below.

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Luke Jones
Luke is a qualified writer from the UK who has been writing about all things technology for nearly a decade.