The Tool Desk
Outbyte Driver Updater FREEScan for outdated or missing drivers - takes under a minuteDriver Scan →Outbyte PC Repair FREEClear out junk files and repair common Windows errorsFree Scan →No. The Samsung Galaxy S21+ has no microSD card slot and does not support microSD cards for expandable storage. A Samsung Brand Ambassador stated this directly in a response on Samsung’s product page on April 16, 2025. Samsung product page
Can you add a microSD card to the Galaxy S21+?
No. Although people often say “SD card,” the relevant phone format is microSD—and the Galaxy S21+ has no slot for one. A microSD card cannot be inserted into the phone to increase its internal storage. Samsung’s US support guidance also notes that microSD support varies across its devices; it does not mean every Galaxy phone has a card slot. Samsung’s microSD support guidance
How much built-in storage does the S21+ have?
Samsung’s US support specifications list 128GB and 256GB internal-storage configurations for the named Galaxy S21+ 5G Sprint and unlocked variants. The usable space is less than the advertised capacity because the operating system and device features use storage, and the available amount can vary. Samsung’s January 2021 launch announcement for Canada also listed 128GB and 256GB configurations. Samsung US Galaxy S21+ specifications · Samsung Newsroom Canada launch announcement
What can you use instead of a microSD card?
Use a USB-C drive to handle files
The cited US S21+ specifications list a USB Type-C port and USB 3.2 Gen 1. A USB-C flash drive may be worth investigating for transferring or accessing files, but those specifications do not confirm compatibility with a particular drive or every app and file workflow. Check the drive’s compatibility with your phone and intended use. It remains an external accessory; it does not expand the phone’s internal storage. Samsung US Galaxy S21+ specifications
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#1 Best Overall
- This Phone Is Unlocked And Compatible With Any Carrier Of Choice On Gsm And Cdma Networks (E.G. At&T, T-Mobile, Sprint, Verizon, Us Cellular, Cricket, Metro, Tracfone, Mint Mobile, Etc.).
- When You Receive The Phone, Insert A Sim Card From A Compatible Carrier. Then, Turn It On, Connect To Wi-Fi, And Follow The On Screen Prompts To Activate Service.
- The Device Does Not Come With Headphones Or A Sim Card. It Does Include A Charger And Charging Cable That May Be Generic.
- Tested For Battery Health And Assured To Have A Minimum Battery Capacity Of 80%.
Choose the built-in capacity that fits
If you are buying an S21+ and need more room for files and apps on the phone itself, compare the listed 128GB and 256GB configurations. A microSD card is not a way to upgrade either model after purchase.
Consider cloud storage for files
Cloud storage is another way to keep files without a card slot. The available providers, plans, prices, and features vary, so compare them separately against your storage needs and internet access.
Rank #2
- Product Type -Cellular Phone
- Package Quantity-1
- Package Dimension-6.9299999929314 inchesL X 3.6599999962668 inchesW X 1.4599999985108 inchesH
- Package Weight -0.76941329438 Lbs
Does this apply to every regional S21+ model?
The direct no-slot statement addresses the Galaxy S21 line, and the cited US specifications cover specific US variants. Samsung Canada’s microSD compatibility list applies to Canadian devices and was last updated October 15, 2025; it is not a worldwide inventory of every regional model. For an unusual regional variant, check its local Samsung specifications page or the model’s documentation rather than assuming that a different market version has a slot. Samsung Canada microSD compatibility list
Quick Recap
Best Value
- Android 11 | One UI 3.1 | Octa-core | 128GB | 8GB | Adreno 660
- Dynamic AMOLED 2X, 120Hz, HDR10+ display | Gorilla Glass | 6.7 inches | 1080 x 2400
- Wi-Fi 802.11 a/b/g/n/ac/6, dual-band| GPS | Wi-Fi Direct, hotspot | Bluetooth 5.0 | USB Type-C 3.2
- 12 MP Camera | LED Flash | 1080p | Speaker
- 6.36 x 2.98 x 0.31 | 7.05oz | Single SIM | GSM, HSPA, LTE, CDMA
Rank #4
- This phone is unlocked and compatible with any carrier of choice on GSM and CDMA networks (e.g. AT&T, T-Mobile, Sprint, Verizon, US Cellular, Cricket, Metro, Tracfone, Mint Mobile, etc.).
- Please check with your carrier to verify compatibility.
- When you receive the phone, insert a SIM card from a compatible carrier. Then, turn it on, connect to Wi-Fi, and follow the on screen prompts to activate service.
- The device does not come with headphones or a SIM card. It does include a charger and charging cable that may be generic.
- Tested for battery health and guaranteed to have a minimum battery capacity of 80%.
Rank #3
- The Galaxy S21+ features a 6.7-inch Dynamic AMOLED 2X display with Quad HD+ resolution and an adaptive 120Hz refresh rate, which intelligently adjusts the refresh rate depending on what you’re doing to balance smooth visuals and battery efficiency. Its HDR10+ support ensures vibrant colors, deep contrasts, and sharp detail, making movies, games, and apps look exceptionally immersive.
Product prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on Amazon at the time of purchase will apply.
