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Small rectangular microSDXC card with red and grey SanDisk Ultra label

SanDisk

SanDisk Ultra 256GB microSDXC SDSQUA4-256G-AN6MA memory card

SKU CH-4NJ3-1HN26 MPN SDSQUA4-256G-AN6MA

256GB microSDXC card with up to 100MB/s read speed, UHS-I U1 Class 10 and A1 rating for Full HD video and faster app loading on Android devices

  • TypemicroSDXC
  • Capacity256GB
  • Speed Class RatingUHS-I / U1 / Class 10 / A1
  • Read SpeedUp to 100MB/s
  • FeaturesUp to 256GB capacity Up to 100MB/s transfer speeds Load apps
  • 256GB capacity stores thousands of photos and videos
  • Up to 100MB/s read speed moves large files quickly
  • A1 performance class loads apps faster on Android
  • UHS-I U1 and Class 10 rating records smooth Full HD video
  • microSDXC format fits smartphones, tablets and action cameras

SanDisk Ultra 256GB microSDXC card

The SanDisk Ultra SDSQUA4-256G-AN6MA is a 256GB microSDXC memory card built for everyday storage expansion. It carries UHS-I, U1, Class 10 and A1 ratings with read speeds up to 100MB/s. The card is designed for Android smartphones and tablets that need reliable space for apps, photos and Full HD video.

Suited for mobile users who need app performance

This card works well for people who want faster app loading on Android devices and enough capacity for large media libraries. It is not intended for hardware that requires UHS-II or U3 speeds, nor for workflows that demand sustained write rates beyond the U1 rating. Buyers who need higher video speed classes or faster bus interfaces should look at other options.

UHS-I U1 Class 10 A1 rating defines the supported

The speed class combination guarantees minimum write performance for Full HD video capture and the A1 specification ensures smoother app operation on compatible Android devices. If your device or workflow calls for a higher speed class or a different bus interface, this card will not meet those requirements.

Highlights

  • 256GB capacity stores thousands of photos and videos
  • Up to 100MB/s read speed moves large files quickly
  • A1 performance class loads apps faster on Android
  • UHS-I U1 and Class 10 rating records smooth Full HD video
  • microSDXC format fits smartphones, tablets and action cameras

Specifications

BrandSanDisk
SeriesUltra
ModelSDSQUA4-256G-AN6MA
TypemicroSDXC
Capacity256GB
Speed Class RatingUHS-I / U1 / Class 10 / A1
Read SpeedUp to 100MB/s
FeaturesUp to 256GB capacity
Up to 100MB/s transfer speeds
Load apps faster with A1 performance class
UHS Speed Class U1 and Speed Class 10 for Full HD video recording and playback
Ideal for Android-based smartphones and tablets
Shipping weight0.01 kg
Package size152 × 99 × 5 mm

Questions about this item

Which capacity should I pick for my phone if the options are 256GB and smaller sizes?

The 256GB model gives the most space for apps, photos and Full HD video on Android devices without needing to swap cards.

What does the 100MB/s read speed actually deliver when the card is in a handset?

It lets you open large apps and load game levels noticeably faster than slower cards, while sustaining smooth Full HD video playback.

How does the UHS-I interface limit real-world performance?

UHS-I sets the maximum bus bandwidth, so the card’s rated 100MB/s read speed operates at the top of what the interface allows.

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