SanDisk

SanDisk SDSQUAR-128G-GN6MN 128GB Ultra MicroSD Card for Samsung Galaxy + Reader

4.6 (866 reviews)

Bundle a 128GB SanDisk Ultra MicroSD card with a multi-slot reader for easy Galaxy phone storage expansion.

$16.04*
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*Price sourced from Amazon.com. Last updated:Jul 14, 2026.Price and availability are subject to change.

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Overview

The SanDisk SDSQUAR-128G-GN6MN 128GB Ultra MicroSDXC card is designed to give Samsung Galaxy smartphone owners a straightforward way to expand their device storage. With 128GB of capacity, it can hold thousands of photos, hours of Full HD video, and a library of apps without straining your phone's internal memory. The card's A1 app performance rating means it meets minimum random read and write thresholds required for running applications directly from the card, while its Class 10 and U1 speed ratings ensure smooth Full HD recording and playback at read speeds up to 100MB/s.

What sets this particular listing apart is the bundled Everything But Stromboli multi-slot card reader, which accepts SD, Micro SD, M2, and MS card formats. This eliminates the need to purchase a separate adapter when you want to move files between the card and a computer. The card itself is built to handle real-world hazards — it is waterproof, shockproof, temperature-proof, and X-ray-proof, making it a reliable choice for everyday carry. Whether you are backing up vacation photos or freeing up phone storage by moving apps to the card, this bundle offers a practical and affordable solution.

Key Features

Bundle includes (1) 128GB SanDisk MicroSD card and (1) Everything But Stromboli (TM) Multi-Slot Card Reader - Includes SD, Micro SD, M2, and MS slots for easy transfer.

Compatible with Samsung Galaxy A10, A20, A70 smart phones

Read speeds up to 100mb/s; rated A1 for app performance and UHS Speed Class U1 and Speed Class 10 for Full HD video recording and playback

Shockproof, temperature-proof, waterproof, and X-ray-proof

Ideal for Android-based tablets and smartphones for more expandable storage

Specifications

Capacity
128GB
Card Type
MicroSDXC
Speed Class
Class 10, U1, A1
Read Speed
Up to 100MB/s
Durability
Shockproof, Temperature-proof, Waterproof, X-ray-proof
Compatibility
Samsung Galaxy A10, A20, A70; Android tablets and smartphones
Model
SDSQUAR-128G-GN6MN R6
Bundle Includes
128GB MicroSD Card, Everything But Stromboli Multi-Slot Card Reader

Pros & Cons

👍 Pros

  • 128GB capacity provides substantial expandable storage for photos, videos, and apps.
  • Bundled multi-slot card reader simplifies transferring files to a computer without needing a separate adapter.
  • A1 app performance rating allows apps to run directly from the card with acceptable speed.
  • Durable construction withstands water, shock, extreme temperatures, and X-rays.
  • Read speeds up to 100MB/s enable quick file transfers and smooth Full HD video playback.

👎 Cons

  • Write speeds are not advertised and are significantly slower than the 100MB/s read speed.
  • The bundled card reader is a third-party accessory and may not match SanDisk's own build quality.
  • Not the fastest option for 4K video recording since it lacks a V30 or U3 speed rating.
  • Limited listed phone compatibility to only three Samsung Galaxy models, though it works in most MicroSD-compatible devices.

Frequently Asked Questions

This bundle is specifically listed as compatible with the Samsung Galaxy A10, A20, and A70. It will also work with other devices that accept MicroSDXC cards.
The bundle includes one 128GB SanDisk Ultra MicroSDXC card and one Everything But Stromboli multi-slot card reader with SD, Micro SD, M2, and MS slots.
The card offers read speeds up to 100MB/s and carries an A1 app performance rating, UHS Speed Class U1, and Speed Class 10 for Full HD video recording and playback.
Yes. The SanDisk Ultra is shockproof, temperature-proof, waterproof, and X-ray-proof, so it can withstand common hazards including airport security scanners and accidental drops.
With its A1 rating, this card is designed to run apps directly from the card, not just store files, so you can move compatible apps to the MicroSD to free up internal phone storage.