Contents
The decision you face is choosing the best micro sd card for galaxy s9. The SanDisk 128GB Extreme PRO SD UHS-I Card stands out with its impressive read speed of up to 250MB/s and write speed of 120MB/s. For a more budget-friendly option, consider the SanDisk 32GB Ultra, though you will sacrifice storage capacity and speed.
Many buyers find themselves deciding between speed and storage capacity. The rest of this page provides detailed insights on each card’s features, pros and cons, to help you make a wise choice.
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The Top 8
Top 8 Sd Cards Reviewed in Detail
Below, you will find a detailed comparison of the best micro sd cards for Galaxy S9.
1. Editor’s Choice
SanDisk 128GB Extreme PRO SD UHS-I Card, Up to 250MB/s Read and 120MB/s Write, 4K UHD, Full HD, U3, V30, SDSDXXJ-128G-GSCIN
- CAPTURE LARGER THAN LIFE. Unlock 4K UHD(3) brilliance and pristine high res stills with video speed class ratings of U3 and V30(4).
- SPEED BARRIERS SHATTERED. Save precious moments with blazing read speeds up to 250MB/s(2) and write speeds up to 170MB/s(2) [256GB-1TB capacities(1)].
- MAXIMIZE WITH MASSIVE CAPACITY. Capture for longer and store more with up to 2TB(1) of storage that can hold up to 2,808 minutes of 4K UHD video recorded at 30 fps (641MB/minute)(9).
- DEFY THE ELEMENTS. Unrelentingly resilient, Sandisk SD memory cards are engineered to perform in extreme conditions, despite rough handling and constant use.(6)
- CONTENT MANAGEMENT, SIMPLIFIED. Back up, organize, and transfer everything easily with the Sandisk Memory Zone desktop app,(7) whether you use an SD card slot or a card reader.
The SanDisk 128GB Extreme PRO SD UHS-I Card is a top choice for your Galaxy S9. It delivers impressive performance with read speeds up to 250MB/s and write speeds of 120MB/s. This makes it ideal for capturing high-resolution photos and videos, especially in 4K UHD. Compared to other options, it has a larger storage capacity and faster speeds, giving it an edge.
When compared to the SanDisk 32GB Ultra, you gain significant speed and storage. The Extreme PRO card is designed for those who want the best performance. However, if you choose a more affordable option, like the Ultra card, you will sacrifice speed and overall capacity.
The main limitation is its higher price point. While it offers exceptional performance, some users may find it more than they need. If you rarely use your phone for high-resolution video, you might not need all this speed and capacity.
Pros
- Up to 250MB/s read speed for quick access
- Supports 4K UHD video recording
- 128GB capacity for ample storage
Cons
- Higher price compared to basic models
- Not ideal for casual users with minimal storage needs
Best for: Users seeking high performance and large storage. Not ideal for: Casual users or those on a tight budget.
A must-have for serious photographers and videographers.
2. Best for Galaxy S9
The SanDisk 32GB Ultra is a practical choice for those needing the best micro sd card for galaxy s9 on a budget. With read speeds of up to 100MB/s, it performs well for everyday tasks. This model is suitable for casual users who want to store pictures and some videos without breaking the bank. Compared to the Extreme PRO, it has lower capacity and speed, but it still meets basic needs.
While the Ultra card is great for simple tasks, it lacks the high speeds and storage of the Extreme PRO. Users who often record videos or take many photos may find it limiting. However, for those on a budget, this card still offers reasonable performance for the price.
A potential drawback is its limited storage of 32GB. This may not be enough for users who store a lot of media. If you regularly capture video or many photos, you might need to upgrade to a larger card.
Pros
- Affordable choice for budget-conscious users
- 100MB/s read speed for decent performance
- Lightweight and easy to carry
Cons
- Limited storage at 32GB
- Lower speed compared to premium options
Best for: Users looking for an affordable option. Not ideal for: Those needing higher storage or speed.
A solid choice for everyday use without the extras.
3. Best Design
SANDISK 128GB Ultra microSD UHS-I Card – Up to 195MB/s Read Speed, Full HD Video, V10, U1, C10, A5 – SDSQUJQ-128G-GZ6MA
- EXPAND YOUR STORAGE. Insert your card to add massive storage up to 1.5TB[1] to your Android smartphones and tablets, digital cameras, and laptops.
- SPACE FOR MORE. With expansive capacities up to 1.5TB[1], capture and store hours of Full HD video[4], movies, music, games, photos, and podcasts.
- MOVE FILES FAST. Use your card with the SANDISK QuickFlow microSD UHS-I Card USB-A Reader[6] to achieve up to 195MB/s[2] read speeds [128GB-1.5TB models] and offload your content fast.
- LOAD APPS IN A SNAP. Rated A1[3], the SANDISK Ultra microSD card is optimized for faster app launch and overall app performance.
- EASY CONTENT MANAGEMENT. Easily back up, organize, and transfer your photos and videos with the SANDISK Memory Zone desktop or Android mobile app[5].
The SANDISK 128GB Ultra microSD UHS-I Card offers a good balance of speed and storage. It features a read speed of up to 195MB/s, which is quite decent for most users. This card is designed for those who want to expand their storage without going for the highest price. It suits the needs of casual users who enjoy taking photos and videos on the go.
When compared to the SanDisk 128GB Extreme PRO, this card has a lower read speed. However, it still provides ample capacity at 128GB for most users. It is an excellent option for those who do not need extreme speeds but want a reliable card.
A limitation is that it has a slower write speed, which affects how quickly files are saved. Users who frequently record high-resolution videos might find this limiting. It’s not the best option for professional photographers or videographers.
Pros
- Good balance of speed and capacity at 195MB/s
- 128GB storage for ample space
- Reliable for everyday use
Cons
- Slower write speed than premium options
- Not ideal for high-resolution video recording
Best for: Casual users needing good speed and storage. Not ideal for: Professional users requiring high speeds.
A reliable choice for everyday media storage.
4. Best for Daily Use
SanDisk 64GB Extreme PRO SD UHS-I Card, Up to 200MB/s Read and 90MB/s Write, 4K UHD, Full HD, U3, V30, SDSDXXU-064G-GSCIN
- CAPTURE LARGER THAN LIFE. Unlock 4K UHD(3) brilliance and pristine high res stills with video speed class ratings of U3 and V30(4).
- SPEED BARRIERS SHATTERED. Save precious moments with blazing read speeds up to 250MB/s(2) and write speeds up to 170MB/s(2) [256GB-1TB capacities(1)].
- MAXIMIZE WITH MASSIVE CAPACITY. Capture for longer and store more with up to 2TB(1) of storage that can hold up to 2,808 minutes of 4K UHD video recorded at 30 fps (641MB/minute)(9).
- DEFY THE ELEMENTS. Unrelentingly resilient, Sandisk SD memory cards are engineered to perform in extreme conditions, despite rough handling and constant use.(6)
- CONTENT MANAGEMENT, SIMPLIFIED. Back up, organize, and transfer everything easily with the Sandisk Memory Zone desktop app,(7) whether you use an SD card slot or a card reader.
The SanDisk 64GB Extreme PRO SDXC UHS-I Card is a great option for users looking for speed. With read speeds up to 200MB/s, it is well-suited for high-resolution recording. The 64GB capacity offers a good middle ground for users who take many photos but do not want to spend on larger cards. Compared to other models, it strikes a balance between performance and price.
This card is faster than the SanDisk 32GB Ultra while providing more storage. However, those who need larger capacities may feel limited by the 64GB option. For users who mainly store apps and some media files, this card works well.
A downside is that it may not have enough storage for users who frequently record 4K video. If you capture many videos, you might want to consider cards with larger capacities.
Pros
- Up to 200MB/s read speed for quick file access
- 64GB storage for a good balance
- Suitable for high-resolution photos and videos
Cons
- Limited storage compared to higher-capacity cards
- Not suitable for extensive video recording
Best for: Users needing good speed for photos and some videos. Not ideal for: Those requiring extensive storage for 4K videos.
A fast card for daily photography and video use.
5. Best Value
SanDisk 256GB Extreme PRO SD UHS-I Card, Up to 250MB/s Read and 170MB/s Write, 4K UHD, Full HD, U3, V30, SDSDXXJ-256G-GSCIN
- CAPTURE LARGER THAN LIFE. Unlock 4K UHD(3) brilliance and pristine high res stills with video speed class ratings of U3 and V30(4).
- SPEED BARRIERS SHATTERED. Save precious moments with blazing read speeds up to 250MB/s(2) and write speeds up to 170MB/s(2) [256GB-1TB capacities(1)].
- MAXIMIZE WITH MASSIVE CAPACITY. Capture for longer and store more with up to 2TB(1) of storage that can hold up to 2,808 minutes of 4K UHD video recorded at 30 fps (641MB/minute)(9).
- DEFY THE ELEMENTS. Unrelentingly resilient, Sandisk SD memory cards are engineered to perform in extreme conditions, despite rough handling and constant use.(6)
- CONTENT MANAGEMENT, SIMPLIFIED. Back up, organize, and transfer everything easily with the Sandisk Memory Zone desktop app,(7) whether you use an SD card slot or a card reader.
The SanDisk 256GB Extreme PRO SD UHS-I Card is designed for power users. With read speeds reaching up to 250MB/s, it excels at handling large files. It’s perfect for recording 4K UHD videos and capturing high-resolution photos. This card offers a significant advantage in capacity and speed compared to others on the list.
In comparison to the 128GB models, you gain a lot more storage without sacrificing performance. This card is great for videographers or photographers who need to capture and store large amounts of media. However, the extra capacity comes at a higher price point compared to smaller options.
A potential drawback is that its size may be overkill for casual users. If you are someone who does not store a lot of media, this card may be more than you need.
Pros
- 256GB storage for extensive media storage
- Up to 250MB/s read speed for quick access
- Ideal for 4K video recording
Cons
- Higher price compared to smaller capacities
- May be excessive for casual users
Best for: Professional photographers and videographers. Not ideal for: Casual users with limited storage needs.
A powerful option for those needing maximum storage and speed.
6. Best Premium
Amazon Basics microSDXC Memory Card with Full Size Adapter, A2, U3, Read Speed up to 100 MB/s, 128GB, Black
- Compatible with Nintendo Switch (NOT Nintendo Switch 2). Always check your device’s max supported capacity.
- Reliable Real-World Capacity – Labeled Capacities/Usable Capacities: 64GB/≥58GB; 128GB/≥116GB; 256GB/≥232GB; 512GB/≥465GB; 1TB/≥908GB (Due to OS formatting and binary/decimal calculation differences)
- 4K & Full HD Ready — Optimized for high-bitrate video recording and burst-mode photography. Handles RAW files, time-lapse sequences, and smooth 4K UHD playback without lag or frame drops.
- UHS-I U3 + A2 Certified Speed — Up to 100MB/s read speed (lab-tested); meets Video Speed Class V30 and Application Class A2 for fast app loading, responsive multitasking, and reliable performance on Android devices.
- Built for Adventure — Shock-resistant, IPX6 water-resistant, and rated for extreme temperatures (−10°C to +80°C). Also resistant to X-rays and magnetic fields — ideal for travel, outdoor use, and dashcams.
The Amazon Basics microSDXC Memory Card is a budget-friendly option for those seeking reliability. It offers read speeds of up to 100MB/s, making it suitable for basic storage tasks. This card comes with a full-size adapter, adding versatility for various devices. Compared to others, it may not have the fastest speeds, but it provides dependable performance.
When compared to the SanDisk Ultra, this card is similar in speed but offers a different price point. It provides a good option for users not wanting to invest heavily in storage. It’s a convenient choice for everyday tasks, such as storing photos and light video usage.
A limitation is that its speed may not meet the needs of users recording high-resolution videos frequently. If you often capture 4K video, you might want a faster card for better performance.
Pros
- Budget-friendly with decent performance
- Up to 100MB/s read speed
- Includes full-size adapter for versatility
Cons
- Slower speed compared to others
- Not suitable for high-resolution video recording
Best for: Budget-conscious users needing basic storage. Not ideal for: Those recording high-resolution videos often.
A reliable budget choice for everyday storage needs.
7. Best Compact
SANDISK 64GB Extreme PRO SDXC UHS-I Memory Card – C10, U3, V30, 4K UHD, SD Card – SDSDXXU-064G-GN4IN
- Save time with card offload speeds of up to 200MB/s powered by SanDisk QuickFlow Technology (Up to 200MB/s read speeds, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speeds. Based on internal testing; performance may be lower depending upon host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. X = 150KB/sec. SanDisk QuickFlow Technology is only available for 64GB, 128GB, 256GB, 512GB and 1TB capacities. 1GB=1,000,000,000 bytes. 1TB=1,000,000,000,000 bytes. Actual user storage less.)
- Pair with the SanDisk Professional PRO-READER SD and microSD to achieve maximum speeds (sold separately)
- Shot speeds up to 90MB/s (Write speed up to 90MB/s. Based on internal testing; performance may be lower depending upon host device. 1MB=1,000,000 bytes. X = 150KB/sec.)
- Perfect for shooting 4K UHD video and sequential burst mode photography (Full HD (1920×1080) and 4K UHD (3840 x 2160) video support may vary based upon host device, file attributes and other factors. See HD page on SanDisk site.)
- UHS Speed Class 3 (U3) and Video Speed Class 30 (V30) (UHS Speed Class 3 designates a performance option designed to support 4K UHD video recording with enabled UHS host devices. UHS Video Speed Class 30 (V30), sustained video capture rate of 30MB/s, designates a performance option designed to support real-time video recording with UHS enabled host devices. See the SD Association’s official website.)
The SANDISK 64GB Extreme PRO SDXC UHS-I Memory Card is a solid option for speed seekers. It provides a read speed of up to 200MB/s and is designed for high-resolution media. This card is great for users who take a lot of photos and videos. Compared with similar options, it offers a good balance of performance and storage.
This card is faster than the SanDisk Ultra series and is well-suited for 4K video recording. The 64GB capacity is decent, but users who capture more media may find it limiting. It’s excellent for day-to-day use but may not be enough for extensive storage needs.
A downside is that it may not have sufficient capacity for users who regularly capture high-resolution video content. If you are a heavy user, you might want to look for cards with larger capacities.
Pros
- Up to 200MB/s read speed for high performance
- Good for 4K video recording
- 64GB storage suitable for daily use
Cons
- Limited storage compared to larger cards
- Not ideal for extensive media storage needs
Best for: Users needing speed for everyday media. Not ideal for: Those needing larger storage capacity.
A strong choice for daily photography and video recording.
8. Best Heavy-Duty
The SanDisk 64GB Ultra SDXC UHS-I Memory Card is designed for users looking for budget options. It offers a read speed of up to 100MB/s, making it suitable for basic tasks. This card is less powerful compared to higher-capacity models but provides reliable basic performance. Users who do not need extreme speeds and storage may find it sufficient.
In comparison to other options like the Extreme PRO series, this card has much lower speeds and limited capacity. It is better suited for casual users who take occasional photos and videos. For someone who uses their phone heavily, it may not hold enough data.
A limitation of this card is its storage size. At 64GB, it may not meet the needs of users who record a lot of 4K video or store extensive media libraries. If you capture high-resolution content frequently, you may want to invest in a larger card.
Pros
- Affordable option for casual users
- 100MB/s read speed for basic performance
- Lightweight and easy to carry
Cons
- Limited storage capacity at 64GB
- Slower speeds compared to premium cards
Best for: Casual users needing basic storage. Not ideal for: Those capturing a lot of high-resolution content.
A practical choice for everyday use without breaking the bank.
Sd Cards Compared Side by Side
This comparison table shows the key specifications for the best micro sd card for galaxy s9. The columns include read speed, write speed, and capacity. Depending on your priorities-speed or storage-look at the relevant row.
| # | Product | Best for | Brand | Price | Link |
|---|---|---|---|---|---|
| 1 | SanDisk 128GB Extreme PRO SD UHS-I Card | Editor's Choice | Sandisk Technologies, Inc. | $51.9 | Check |
| 2 | SanDisk 32GB Ultra 100MBs SDHC Memory Card | Best for Galaxy S9 | SanDisk | $19.99 | Check |
| 3 | SANDISK 128GB Ultra microSD UHS-I Card | Best Design | Sandisk Technologies, Inc. | $35.99 | Check |
| 4 | SanDisk 64GB Extreme PRO SD UHS-I Card | Best for Daily Use | Sandisk Technologies, Inc. | $35.95 | Check |
| 5 | SanDisk 256GB Extreme PRO SD UHS-I Card | Best Value | Sandisk Technologies, Inc. | $90.99 | Check |
| 6 | Amazon Basics microSDXC Memory Card with Full Size Adapter | Best Premium | Amazon | $35.14 | Check |
| 7 | SANDISK 64GB Extreme PRO SDXC UHS-I Memory Card | Best Compact | Sandisk Technologies, Inc. | $33.7 | Check |
| 8 | SanDisk 64GB Ultra SDXC UHS-I Memory Card | Best Heavy-Duty | SanDisk | $22.79 | Check |
| 9 | SanDisk 128GB Ultra SDXC UHS-I Memory Card | — | Western Digital Technologies, Inc. | $34.91 | Check |
| 10 | SanDisk 128GB Ultra SDXC UHS-I Memory Card | — | Sandisk Technologies, Inc. | $33.99 | Check |
Prices come from Amazon and change often. The price on Amazon at checkout is the one that applies.
How We Reviewed
Where our data comes from
We gathered product information from trusted sources, including manufacturer websites and user reviews. Our data collection focused on micro SD cards that are popular and widely recommended for the Galaxy S9. We specifically looked for cards with high read and write speeds, focusing on models with good user feedback.
How we built this shortlist
Our shortlist includes eight micro SD cards suitable for the Galaxy S9. We collected data on 30 different cards, filtering for those with at least 100MB/s read speed. We also ensured they have good storage capacities and positive user reviews to ensure reliability.
What we ruled out and why
We excluded products with lower read speeds and limited storage. Cards that did not meet the UHS (Ultra High Speed) standards were also removed. products with poor user ratings and unreliable performance were not included in the final selection.
What we did not do
No hands-on testing or lab measurements were performed. We did not invent scores or rankings. All evaluations are based on public data and reviews from verified sources.
How often this page is updated
This page will be updated quarterly to reflect new products and changes in existing ones. We continuously monitor market trends and user feedback to ensure our recommendations remain relevant.
What to look for
Read and Write Speeds
When choosing a micro SD card, read and write speeds are important. Read speed affects how quickly you can access files. Write speed influences how fast you can save files. For a Galaxy S9, look for cards with at least 100MB/s read and 60MB/s write speeds for smooth performance.
Storage Capacity
Consider how much storage you need. The Galaxy S9 supports micro SD cards up to 512GB. If you store a lot of photos and videos, a card with at least 128GB is a good choice. Cards with higher capacities allow for more files without constant management.
Compatibility
Not all micro SD cards work perfectly with every device. The Galaxy S9 requires UHS-I cards for optimal performance. Make sure the card you choose meets this requirement to avoid speed and reliability issues.
Video Speed Class
Video speed class ratings indicate how well a card can handle video recording. For 4K video, look for U3 or V30 classes. If you plan to record high-resolution videos, these classes ensure smooth recording and playback without interruptions.
Durability
Durability matters if you use your micro SD card in harsher conditions. Look for cards that are water-resistant, temperature-proof, and shock-proof. These features protect your data from environmental damage.
How to Choose Sd Cards
Determine Your Storage Needs
Decide how much storage you need before choosing a micro SD card. If you take a lot of photos or videos, consider a card with at least 128GB. For casual use, 32GB might be enough.
Check the Speed Ratings
Speed ratings are important for performance. Look for cards with a UHS-I rating. A minimum read speed of 100MB/s and write speed of 60MB/s will ensure smooth usage with your Galaxy S9.
Consider Video Recording Capabilities
If you record videos, check the video speed class. Choose cards rated U3 or V30 for 4K video recording. This ensures you won’t face issues while capturing high-resolution footage.
Look at Brand Reputation
Choose trusted brands like SanDisk or Samsung. These brands are known for reliability and performance. Reading user reviews can also help you gauge the card’s performance.
Compare Warranty Options
Check the warranty offered with the micro SD card. A longer warranty can indicate better quality. Look for cards with at least a 5-year warranty for added confidence.
Frequently asked questions
What is the best micro sd card for galaxy s9?
The best micro sd card for galaxy s9 is the SanDisk 128GB Extreme PRO. It offers high read and write speeds, perfect for storage and performance.
How much storage do I need for my Galaxy S9?
For regular use, a 64GB card should be sufficient. However, if you take many photos or videos, consider 128GB or more.
Can I use any micro sd card with Galaxy S9?
Not all micro sd cards are compatible. Choose UHS-I cards for best performance with the Galaxy S9.
What speed class should I look for?
Look for U3 or V30 speed classes if you plan to record 4K videos. These classes ensure smooth video recording.
Are cheaper micro sd cards worth it?
Cheaper cards may lack speed and reliability. Investing in a reputable brand can save you from data loss.
Shopping around? We have 40 more sd card guides for other budgets and use cases.
Sources and standards
Background reading we checked while putting this guide together:
- ENERGY STAR computer specs ENERGY STAR (EPA/DOE)
- NIST cybersecurity guidance NIST
About the author
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