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SanDisk Ultra microSDXC Card Review: Is It the Best Way to Expand Phone Storage?

SanDisk 128GB Ultra microSDXC card + SD adapter, Memory card Full HD, up to 140 MB/s, For smartphones and Tablets, with A1 App Performance, UHS-I, Class 10, U1
4.7
[Android Compatible]  Works with Android smartphones and tablets for seamless storage expansion.
[Massive Capacity]  Up to 1.5TB stores hours of Full HD video, photos, music, and more.
[Fast Transfer Speeds]  Up to 140MB/s transfers files quickly, moving up to 1000 photos per minute.
[A1 App Performance]  A1-rated for faster app launches and improved mobile app performance.
[SanDisk Memory App]  Memory Zone app simplifies file access, backups, and automatic transfers to the card.
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MicroSDXC storage for smartphones and tablets, designed to free up space and speed up transfers. Fewer interruptions and faster app response help busy users stay productive and capture more content. Is the SanDisk Ultra microSDXC Card the right fit for everyday mobile storage needs?

⚡ At a Glance
  • Performance: A1 app performance with UHS-I Class 10 reliability
  • Best for: Smartphone and tablet users needing extra storage and faster app loading
  • Not ideal for: Workflows requiring sustained higher write speeds than UHS-I Class 10

A compact microSDXC card with A1-rated app performance and UHS-I Class 10 speed. Includes an SD adapter for easy use in full-size SD slots.


Move files quickly, with up to 140MB/s transfer speeds

UHS-I interface supports read speeds up to 140MB/s, allowing fast bulk transfers and quicker imports. Manufacturer notes the ability to move large photo libraries rapidly, such as up to 1000 photos per minute during transfer.

Large backups and imports complete far sooner, saving time when clearing phone space or moving files to a laptop. Faster transfers reduce waiting around between shoots or work sessions.

Keep Full HD footage ready, with 128GB capacity

128GB capacity stores many hours of Full HD video and dozens of thousands of photos; the product line also includes larger capacities up to 1.5TB. Class 10 and U1 ratings ensure suitable sustained speeds for Full HD recording.

Plenty of room for long video sessions and photo bursts on smartphones and tablets, so less frequent offloads are required. Handy for weekend shoots and extended travel where cloud backups may be slow.

Launch apps faster, with A1-rated app performance

A1 rating denotes optimised random read/write performance for apps, improving launch times and in-app responsiveness. The card is positioned to handle app storage demands more smoothly than non-rated cards.

Apps stored on the card open and run more responsively, helping lower-end devices stay usable as internal storage fills. Keeping media and apps on external storage helps maintain device performance.

✨ The 4 Key Reasons for SanDisk Ultra microSDXC Card
  1. A1 App Performance - Faster app launches and smoother multitasking on Android devices
  2. SD Adapter Included - Use the card in cameras and laptops without extra purchase
  3. Up to 140MB/s Speeds - Bulk photo and video transfers complete in minutes
  4. Proven Durability - Reliable performance for photos, videos and app storage
📋 Technical Details at a Glance
  • Category: microSDXC memory card
  • Capacity: 128GB
  • Card Type: microSDXC UHS-I
  • Read Speed: Up to 140MB/s
  • App Performance: A1-rated for faster app launches
❓ Frequently Asked Questions

Q: Will it work in Android smartphones and tablets?

A: Compatibility with Android smartphones and tablets is stated in the description.

Q: Can it store and record Full HD video?

A: Support for Full HD recording and storage is mentioned in the product information and the card carries Class 10, U1 ratings.

Q: Does an SD adapter come with the card?

A: An SD adapter is included for use in cameras, laptops and full-size SD card slots.

🏆 Our Verdict

Suited to smartphone and tablet owners who need extra storage, quicker transfers and improved app responsiveness. The combination of up to 140MB/s read speeds, A1 app performance and an included SD adapter makes a practical, versatile storage upgrade. While costs vary, durability and cross-device compatibility deliver sensible long-term value.