SanDisk SDSQUA4-128G-GN6MA 128GB Ultra microSDXC Card

Name: SanDisk SDSQUA4-128G-GN6MA 128GB Ultra microSDXC Card
Brand: SanDisk
SKU: SDSQUA4-128G-GN6MA

Overview

The SanDisk 128GB Ultra microSDXC UHS-I card is a practical storage solution designed for Android smartphones, tablets, and MIL cameras. With up to 120MB/s sequential read speeds — achieved through SanDisk's proprietary technology that pushes performance beyond the standard UHS-I 104MB/s specification — the card makes transferring large photo libraries and video files to a computer quick and efficient. The 128GB capacity provides enough room for thousands of photos, hours of Full HD video, and a substantial app library without constant storage management.

What sets this card apart from basic microSD options is its A1 app performance rating, which ensures minimum random read and write IOPS of 1500 and 500 respectively. This translates to noticeably faster app launches and smoother operation when apps are installed on the card rather than internal device storage. The card carries UHS Speed Class U1 and Video Speed Class C10 ratings, guaranteeing a minimum 10MB/s sustained write speed suitable for Full HD video recording. While this discontinued model variant is being replaced by newer versions, it remains a reliable and well-proven option for everyday mobile storage needs.

Key Features

This version has been discontinued by manufacturer

Ideal for Android smartphones and tablets, and MIL cameras.

Up to 128GB to store even more hours of Full HD video (2). 1GB=1,000,000,000 bytes. 1TB=1,000,000,000,000 bytes. Actual user storage less. (2) Full HD (1920x1080) video support may vary based upon host device, file attributes, and other factors.

Up to 120MB/s transfer speeds let you move up to 1000 photos in a minute(5). Up to 120MB/s read speed, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speed. Write speeds lower. Based on internal testing; performance may be lower depending on host device, interface, usage conditions and other factors. 1MB=1,000,000 bytes. (5)Based on internal testing on images with an average file size of 3.55MB (up to 3.7GB total) with USB 3.0 reader. Your results will vary based on host device, file attributes, and other factors.

Load apps faster with A1-rated performance(1). (1) A1 performance is 1500 read IOPS, 500 write IOPS. Based on internal testing. Results may vary based on host device, app type and other factors.

Specifications

Brand

SanDisk

Model

SDSQUA4-128G-GN6MA

Capacity

128GB

Type

microSDXC UHS-I

Read Speed

Up to 120MB/s

Speed Class

C10, U1, A1

Compatibility

Android Smartphones, Tablets, MIL Cameras

Status

Discontinued by Manufacturer

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Pros & Cons

👍 Pros

128GB capacity provides generous storage for photos, Full HD video, and apps
Transfer speeds up to 120MB/s allow fast file moves to a computer or other device
A1 app performance rating ensures smoother operation when running apps from the card
UHS-I Class 10 speed class guarantees minimum write speeds suitable for Full HD video recording

👎 Cons

This specific model has been discontinued by the manufacturer
Write speeds are significantly lower than the advertised 120MB/s read speed
Not rated for 4K video recording — only supports Full HD (1080p) capture reliably
Lacks the V30 or U3 rating that higher-end microSD cards offer for sustained write performance

Frequently Asked Questions

What devices is the SanDisk 128GB Ultra microSDXC card compatible with?

It is designed for Android smartphones, tablets, and MIL cameras. It may also work in other devices with a microSDXC slot, though compatibility should be verified with your specific device.

Does this card come with a full-size SD adapter?

SanDisk Ultra microSDXC cards typically include a full-size SD adapter, but packaging may vary. Check the listing details to confirm adapter inclusion.

What does the A1 app performance rating mean for this card?

The A1 rating guarantees minimum random read speeds of 1500 IOPS and random write speeds of 500 IOPS, which means apps stored on the card launch and run more smoothly compared to cards without an A1 rating.

Has this specific model been discontinued?

Yes, SanDisk has discontinued this particular model variant (SDSQUA4-128G-GN6MA), though the card remains widely available through existing stock. Newer versions with updated speeds may be available.