PC Slower Than It Used to Be?
A free scan shows the junk files, broken settings and background clutter dragging Windows down - then fixes them in one click.Free scan · Windows 10 & 11Crashes, No Sound, or Screen Glitches?
Random freezes, missing sound and display glitches usually trace back to one bad driver. Find and replace yours safely.Free scan · under a minuteOn many Samsung Galaxy phones, the microSD card goes in a side tray shared with the SIM card; some older models with removable backs put it beneath the back cover. But not every Galaxy phone has a memory card slot, and tray layouts vary by model. Check the markings on your tray and Samsung’s instructions for your exact model before inserting or buying a card.
Find out whether your Galaxy supports a memory card
A SIM tray does not necessarily mean the phone accepts a microSD card. Samsung notes that not all phone models support SD cards, and the maximum supported capacity also varies. Check your exact model and regional variant in Samsung’s support information or user manual before choosing a card.
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To identify the model, check the phone’s model information in Settings or on its packaging, then search Samsung support for that model. If you cannot confirm that it supports microSD, do not force a card into an apparent tray opening.
Samsung UK’s SD-card guidance explains that support and capacity are model-dependent.
#1 Best Overall
- Compatible with Nintendo-Switch (NOT Nintendo-Switch 2)
- Expand your storage in a flash: ideal for Android smartphones and tablets, Chromebooks, and Windows laptops.
- Increase your TV show, movie, and Full HD video[4] recording collections dramatically with up to a massive 1.5TB[1].
- Transfer files fast with up to 150MB/s[2] read speeds and SanDisk MobileMate USB micro 3.0 microSD card reader[6].
- Load apps faster with A1-rated performance[3].
Where to look for the slot
Phones with a side tray
On many fixed-battery Galaxy phones, the memory card slot is part of a tray on the side. Inspect the tray’s printed symbols to distinguish the microSD position from the SIM position; the exact location and orientation differ between models.
Older phones with a removable back
Some older Galaxy models place the microSD slot under the removable back cover, often beneath the battery. Samsung’s general instructions describe removing the back and battery before sliding the card into its slot. Follow the sequence in your model’s manual rather than assuming every removable-back phone is identical.
Rank #2
- 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].
Samsung’s instructions for installing or changing a SIM or memory card cover both general designs.
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Insert a card in a side tray
- Confirm that your exact phone model supports microSD and check its manual for the tray layout.
- Use the ejector pin in the tray’s eject hole and press gently to release the tray. Do not insert the pin into a microphone opening.
- Withdraw the tray and read its symbols to identify the memory-card position and orientation.
- Seat the compatible card as shown. Do not assume the contacts face the same direction on every model.
- Reinsert the tray carefully. If it does not slide in smoothly, remove it and check that the card is seated correctly; do not force it.
Check SIM and memory-card tray limits
Some trays accept a SIM and a microSD card together; hybrid or dual-SIM configurations may require a choice between using a second SIM and a memory card. The arrangement is model- and configuration-specific, so check the tray markings and official instructions for your device.
Rank #3
- Compatible with Nintendo-Switch (NOT Nintendo-Switch 2)
- Ideal storage for Android smartphones and tablets
- Up to 128GB to store even more hours of Full HD video (1GB=1,000,000,000 bytes. Actual user storage less. Full HD (1920x1080) video support may vary based upon host device, file attributes, and other factors. See official SanDisk website.)
- Up to 140MB/s transfer speeds to move up to 1000 photos per minute (Up to 140MB/s read speed, engineered with proprietary technology to reach speeds beyond UHS-I 104MB/s, require compatible devices capable of reaching such speed. Based on internal testing; performance may be lower depending on host device, interface, usage conditions, and other factors. 1MB=1,000,000 bytes. 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 (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.)
For example, Samsung Netherlands describes one single-SIM configuration with the SIM in the lower compartment and an optional microSD card in the upper compartment, gold contacts facing down. For the dual-SIM configuration covered on that page, two SIM cards cannot be used at the same time as an SD card. This is an example, not a universal tray layout: Samsung Netherlands’ tray instructions.
Independent reader supportYour contribution helps us test, update, and keep practical guides available for everyone.Unmount the card before removing it
Before physically removing a microSD card, unmount it in the phone’s storage settings to help prevent damage or data loss. Samsung’s general instructions describe going through Device maintenance or Device care, then Storage and SD Card, and choosing Unmount. Menu names can differ by software version; use the current storage settings on your phone if the labels have changed.
Quick Recap
Best Value
- TRANSFER SPEEDS UP TO 800 MB/S: With sequential read speeds up to 800 MB/s, get into your game up to 4× faster than our standard microSD cards (UHS I)¹.
- DYNAMIC THERMAL GUARD: Keeps its cool even when the action heats up. Dynamic Thermal Guard helps reduce overheating for fast, smooth gameplay.
- ALL YOUR GAMES ON ONE TINY CARD: Store all your games and downloadable content (DLCs) with up to 512GB of reliable storage. No deleting. No compromises.
- 6-PROOF PROTECTION WITH 3-YEAR LIMITED WARRANTY: Built to last, made for peace of mind. Anything can happen when you’re gaming on the go. With 6 types of protection²⁻⁹, the P9 Express can handle it all—helping maintain your game progress.
- NEXT-GEN AND BACKWARD COMPATIBLE: Your microSD Express card is compatible with Nintendo Switch 2¹⁰ and microSD UHS-I¹¹ devices, including tablets, drones, cameras and more.
Rank #4
- ALL THE SPACE YOU NEED: Store tons of media on your phone, load games or download more apps on your tablet at top-notch speed, making transfers seamless and reliable
- FAST AND SMOOTH: With superfast U3, class 10 rated transfer speeds of up to 130MB/s¹,²and UHS-I Interface³ big apps load and run smoothly, while 4K video remains sharp with A2, V30, and USH-I Interface
- EXPAND AND STORE BIG: Find your perfect fit from 64GB, 128GB, 256GB and 512GB; Select the best capacity for all your memories. Speed class: U3
- YOU'RE FULLY PROTECTED: EVO Select Plus provides reliable storage and takes on life’s adventures with water⁴, temperature⁵, X-ray⁶, ⁷magnet, drop⁸, and wears⁹ out protection; Backed by a 10-year limited warranty; Proofs are for the microSD card and do not include the adaptor
- FLASH MEMORY CARD: Performance and reliability you can count on from the flash memory brand; All firmware and components are produced in-house
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