Is the Samsung Galaxy A21 worth buying used?

Only at a low price; the Samsung Galaxy A21 is an older, entry-level phone, so a used unit should be inexpensive. Check battery health and that it still gets basic updates before buying. Prices vary between sellers, so compare New vs Refurbished offers on Shopfox to make sure you're not overpaying for the A21.

Does the Galaxy A21 have expandable storage?

Yes, the Samsung Galaxy A21 supports a microSD card, letting you add extra storage for photos, music, and apps beyond its built-in memory. That's helpful since the base storage is modest. Expandable memory is a common budget-phone perk that makes the Galaxy A21 more practical for users who store lots of media locally.

How big is the Samsung Galaxy A21 battery?

The Samsung Galaxy A21 packs a 4,000mAh battery, which is large enough to comfortably last a full day of light-to-moderate use. Its power-efficient, low-end hardware helps stretch runtime further. Charging is on the slower side, but for casual users the Galaxy A21's battery endurance is one of its more dependable everyday strengths.

Samsung Galaxy A21 Cell Phones Price Comparison

Name: Samsung Galaxy A21 Cell Phones
Brand: Samsung
Price: 82.96 USD
Availability: InStock
Rating: 4.67 (36 reviews)

Samsung Galaxy A21 Cell Phones Black Boost Mobile 32GB New

$82.96

Samsung4.74.7

(195)

$82.96

Personalized Fit Score

We can help you with personalized advice and service.
Please complete a few personal details so we can tailor recommendations.
We promise not to share or sell your information to any third party.

All-in-One Cash Back Price History Specifications Compare Fit Score Reviews Expert

All-in-One Comparison

4 sellers & 1 platforms

Current SKU offers

SKU	Platform	Merchant	Delivery	Return Policy	Price	Shipping
BlackBoost Mobile32GB	GenuineTechShopLowest Price	GenuineTechShop 5.0(305)	17 - 23 da...	30 days re...	$82.96	Free
BlackTracfone32GB	clprie_65	clprie_65 5.0(193)	4 - 9 days	No returns	$100.00	$13.64
BlackUnlocked32GB	easybuy0802	easybuy0802 4.9(520)	22 - 28 da...	30 days re...	$117.19	$8.59
BlackUnlocked32GB	Fondrose WirelessFastest	Fondrose Wireless 5.0(4623)	3 - 7 days	30 days re...	$159.99	$15.45

GenuineTechShop

Lowest Price

$82.96

BlackBoost Mobile32GB

GenuineTechShop5.0 (305)Free

17 - 23 da...30 days re...

clprie_65

$100.00

BlackTracfone32GB

clprie_655.0 (193)$13.64

4 - 9 daysNo returns

easybuy0802

$117.19

BlackUnlocked32GB

easybuy08024.9 (520)$8.59

22 - 28 da...30 days re...

Fondrose Wireless

Fastest

$159.99

BlackUnlocked32GB

Fondrose Wireless5.0 (4623)$15.45

3 - 7 days30 days re...

Cash Back

9 sites · 11 platforms · 60 offers

Cash Back

9 sites · 11 platforms · 60 offers

Adorama

BeFrugalVerified

Online Purchases Cashback

Updated Aug 15

BeFrugalOnline Purchases Cashback

VerifiedUpdated Aug 15

Cashback Rate:

Category:

Online Purchases

User Eligibility:

Members

Amazon

Capital One ShoppingVerified

General Cashback

Updated Sep 7

Capital One ShoppingGeneral Cashback

VerifiedUpdated Sep 7

Cashback Rate:

New User Bonus:

Extra Credits after first qualifying purchase (terms vary over time)

User Eligibility:

All users

Best Buy

TopCashbackVerified

Online Purchases Cashback

Updated Aug 29

TopCashbackOnline Purchases Cashback

VerifiedUpdated Aug 29

Cashback Rate:

Category:

Online Purchases

User Eligibility:

All users

Price History

Historical price trends tracked across multiple e-commerce platforms

eBay

Avg

Best price

Lowest in 30d

$82.96

Best price

eBay · Aug 8

Live

Current lowest

$82.96

Live

eBay · Current

Specifications

20200629

Side-by-Side Comparison

6 similar products · scroll horizontally to browse

This Product

Samsung Galaxy A21 Cell Phones

4.7(36)

$82.96 - $84.96

Avg 2.2

1.Built around fast charging and a 4000mAh battery for users who need quick top-ups and dependable daily use.

2.A practical fit for budget-conscious buyers who value charging speed and reliable performance.

Budget-conscious buyersAndroid users

Quick chargingDaily reliability

not specified

Android

not specified

3 GB

Octa Core

6.5 in

720 x 1560 (HD+)

not specified

TFT

4000 mAh

not specified

16MP (Main) + 8MP (Ultra-Wide) + 2MP (Macro) + 2MP (Depth)

Best Performance

Apple iPhone 14 Pro Cell Phones

$449.99 - $1,648.90

Best Value

Apple iPhone 11 Cell Phones

4.8(329)

$166.39 - $933.90

Apple Ecosystem

Apple iPhone 12 Cell Phones

4.4(5K+)

$144.99 - $1,043.90

Fast Charge

Apple iPhone 11 Pro Max Cell Phones

$469.00 - $1,593.90

Pocket Friendly

Apple iPhone 12 mini Cell Phones

3.8(380)

$237.99 - $933.90

Avg 3.1

Avg 2.4

Avg 3.2

Avg 3

Avg 3.1

1.Powered by the A16 Bionic chip and a 120Hz ProMotion display, the iPhone 14 Pro delivers top-tier speed and fluidity for demanding tasks and gaming.

2.A great choice for iOS users who want the best performance in a compact Pro form factor.

1.Offers a solid iOS experience with Face ID and reliable performance at a budget-friendly price, backed by strong user satisfaction on value.

2.A practical choice for those seeking essential Apple features like wireless charging and water resistance without the latest premium cost.

1.Renewed iPhone 12 delivers the core Apple experience with Face ID, OLED display, and 5G, verified for like-new performance.

1.Built around fast 20W charging and a vivid 6.5-inch OLED display for users who want quick top-ups and premium visuals in a reliable iPhone.

2.A practical choice for budget-conscious buyers seeking a flagship-grade screen and fast recharging at a fraction of the original price.

1.Its compact 5.4-inch OLED display and lightweight 4.76 oz design make it one of the most pocketable iPhones, ideal for one-handed use.

2.Smooth iOS performance with a hexa-core chip and solid 12MP dual cameras deliver a reliable daily experience in a small form factor.

Power usersiOS loyalists

Smooth multitaskingHigh-performance gaming

Budget-conscious usersApple loyalists

Everyday reliabilityCasual photography

Apple loyalistsStudents

Everyday iOS useSecure Face ID unlocking

Budget-conscious iPhone fansRefurbished shoppers

Quick rechargingOLED viewing experience

Compact phone fansiOS users

One-handed useDaily pocket carry

not specified

iOS

not specified

Hexa Core

6.1 in

6.5 in

5.4 in

2556 x 1179

1792 x 828 Pixels

2532 x 1170 Pixels

2688 x 1242 Pixels

2340 x 1080

120 hertz

not specified

OLED

LCD

OLED

not specified

—

not specified

—

not specified

48 MP

12 MP

—

Reviews & Ratings

(195)

2.6

195 reviews

👍 Pros

👎 Cons

Performance

1.5

30%

The device suffers from significant performance issues. Users frequently reported 'ghost touching,' where the phone types or apps open by themselves, alongside extreme lag, freezing, and a very slow user interface. Many noted it has insufficient RAM for modern apps.

Performance

1.5

30%

Camera Quality

3.0

60%

Camera performance is a mixed bag; while some users found the photos surprisingly good for a budget device, others experienced technical failures like constant flickering and autofocus issues that rendered facial recognition useless.

Camera Quality

3.0

60%

Battery Life

2.2

44%

Battery reliability is highly inconsistent. A few users reported a full day of use, but a large number of reviewers complained about fast battery drain, charging port failures, and the device eventually refusing to power on at all.

Battery Life

2.2

44%

Display Quality

2.5

50%

The screen is praised for its large size and clarity initially. However, it is criticized for being made of cheap plastic that is unresponsive to swipes. Serious defects like 'black screen of death,' white lines, and flickering were widely reported.

Display Quality

2.5

50%

Build & Design

1.8

36%

While the physical design looks modern, the build quality is poor with non-scratch-resistant plastic. The most critical failure is the 'false advertising' regarding its 'unlocked' status, with many units arriving carrier-locked to specific providers.

Build & Design

1.8

36%

Keywords

User Voices

5.0AMAZONSep 15, 2025

Yailenis A.

Super Bueno

This phone is absolutely fantastic. High quality and works perfectly. Highly recommended!

1.0AMAZONSep 13, 2025

Ross M.

Decia que era nuevo y no es asi

The description claimed the phone was new, but that's a lie. It arrived with a large scratch on the back, and the camera keeps flickering constantly.

Compare prices for Samsung Samsung Galaxy A21 Cell Phones

Samsung Galaxy A21 Cell Phones Black Boost Mobile 32GB New

All-in-One Comparison

Current SKU offers

Cash Back

Cash Back

Price History

Specifications

General2

System & Performance3

Display3

Camera2

Video1

Battery1

Dimension2

Connectivity1

Reviews & Ratings

All-in-One Comparison

Current SKU offers

Cash Back

Cash Back

Price History

Specifications

General2

System & Performance3

Display3

Camera2

Video1

Battery1

Dimension2

Connectivity1

Reviews & Ratings