Best Selling S21+ Phone Case: See Top Product Rankings by Sales Volume & Market Trends

August 2026
46 Products Tracked

Looking for the most popular s21+ phone case products in the market? Our report leverages real Amazon monthly sales data to identify the best-performing products and the fastest-growing opportunities within the search results for the keyword "s21+ phone case." Whether you're searching for winning products to launch or monitoring market trends and competitor performance, this report provides the insights you need.

Based on monthly sales analytics, our Shoppers' Top Picks highlights that ASIN B08P61PH7X currently leads the s21+ phone case market with 500 monthly sales, followed closely by B0GY7JYT7T with 500 monthly sales and B07YBBRWGF with 400 monthly sales. Meanwhile, ASIN B08RBZSZM8 stands out as the fastest-growing product, achieving an impressive 100.0% month-over-month sales growth. By tracking competitor sales performance and shifts in market demand, sellers can uncover emerging opportunities and make more informed product and marketing decisions.

🏆Shoppers' Top PicksAmazon
by monthly sales August 2026
OtterBox Defender Case for Samsung Galaxy S21+ 5G, Shockproof, Drop Proof, Ultra-Rugged, Protective Case, 4X Tested to Military Standard, Black
1
B08P61PH7X
$27.99·
4.6
Units/sold500
LeYi for S21-Phone Case Thin [MagSafe Fit] & Camera Bump Protection, Black | Samsung S21 Case Magnetic Matte Translucent Samsung Galaxy S 21 Case Android Mobile Unlocked Cell Funda para 21S 5G 2021
2
B0GY7JYT7T
$10.99·
4.6
Units/sold500
Dual Phone Holster Pouch Case for 2 Phones, Double Decker Belt Clip Case for iPhone (17 16 15 14 13 12 11) Pro Max/Plus, Samsung Galaxy (S25 S24 S23 S22 S21 S20) Ultra/Plus/Fe (Large)
3
B07YBBRWGF
$17.99·
4.5
Units/sold400
🚀Fastest Growing
by MoM sales growth
Crave for Galaxy S21 Plus Case, Shockproof Protection Dual Layer Case for Samsung Galaxy S21 Plus, S21+ 5G (6.7 inch) - Forest Green
#1
B08RBZSZM8
$16.99·
4.5
Crave for Galaxy S21 Plus Case, Shockproof Protection Dual Layer Case for Samsung Galaxy S21 Plus, S21+ 5G (6.7 inch) - Forest Green
Units/sold
200100.0%
LeYi for S21-Phone Case Thin [MagSafe Fit] & Camera Bump Protection, Black | Samsung S21 Case Magnetic Matte Translucent Samsung Galaxy S 21 Case Android Mobile Unlocked Cell Funda para 21S 5G 2021
#2
B0GY7JYT7T
$10.99·
4.6
LeYi for S21-Phone Case Thin [MagSafe Fit] & Camera Bump Protection, Black | Samsung S21 Case Magnetic Matte Translucent Samsung Galaxy S 21 Case Android Mobile Unlocked Cell Funda para 21S 5G 2021
Units/sold
5009.0%

Top Selling S21+ Phone Case

As of August 2026, we analyzed 46 tracked products in Amazon's "s21+ phone case" search results and generated the following sales chart and product rankings based on monthly sales data. The ranking below highlights the Top 10 products by estimated monthly sales. According to the latest data, these products generated between 200 and 500 monthly sales. B08P61PH7X leads the s21+ phone case market with an estimated 500 monthly sales.

46Products Tracked
320Top 10 Avg. Sales
$17.97Top 10 Avg. Price
4.5Top 10 Avg. Rating
🏆
OtterBox Defender Case for Samsung Galaxy S21+ 5G, Shockproof, Drop Proof, Ultra-Rugged, Protective Case, 4X Tested to Military Standard, Black
#1
B08P61PH7X

OtterBox Defender Case for Samsung Galaxy S21+ 5G, Shockproof, Drop Proof, Ultra-Rugged, Protective Case, 4X Tested to Military Standard, Black

500
Units Sold/mo
$27.99
Price
4.6
Rating
3.2K
Reviews
2
LeYi for S21-Phone Case Thin [MagSafe Fit] & Camera Bump Protection, Black | Samsung S21 Case Magnetic Matte Translucent Samsung Galaxy S 21 Case Android Mobile Unlocked Cell Funda para 21S 5G 2021
B0GY7JYT7T
$10.99
4.6 (5.6K)
LeYi for S21-Phone Case Thin [MagSafe Fit] & Camera Bump Protection, Black | Samsung S21 Case Magnetic Matte Translucent Samsung Galaxy S 21 Case Android Mobile Unlocked Cell Funda para 21S 5G 2021
500 Units Sold/mo▲ 9.0%
3
Dual Phone Holster Pouch Case for 2 Phones, Double Decker Belt Clip Case for iPhone (17 16 15 14 13 12 11) Pro Max/Plus, Samsung Galaxy (S25 S24 S23 S22 S21 S20) Ultra/Plus/Fe (Large)
B07YBBRWGF
$17.99
4.5 (2K)
Dual Phone Holster Pouch Case for 2 Phones, Double Decker Belt Clip Case for iPhone (17 16 15 14 13 12 11) Pro Max/Plus, Samsung Galaxy (S25 S24 S23 S22 S21 S20) Ultra/Plus/Fe (Large)
400 Units Sold/mo▼ 25.0%
4
for Samsung Galaxy S21 Plus Case,with HD Screen Protector [Military Grade Drop Tested] Heavy-Duty Tough Rugged Shockproof Protective Case for Samsung S21 Plus, Black
B0CJB986W4
$9.98
4.4 (751)
for Samsung Galaxy S21 Plus Case,with HD Screen Protector [Military Grade Drop Tested] Heavy-Duty Tough Rugged Shockproof Protective Case for Samsung S21 Plus, Black
400 Units Sold/mo
5
Hensinple for Samsung Galaxy S21 Plus Case with 200% Stronger Magnetic,S21+ Phone case Military-Grade Drop Protection S21 Plus Phone Case 5g Matte Slim for Samsung S21 Plus Case Cover[6.7"]-Black
B0F59SCL3C
$14.99
4.4 (794)
Hensinple for Samsung Galaxy S21 Plus Case with 200% Stronger Magnetic,S21+ Phone case Military-Grade Drop Protection S21 Plus Phone Case 5g Matte Slim for Samsung S21 Plus Case Cover[6.7"]-Black
300 Units Sold/mo
10
OtterBox Commuter Series Case for Samsung Galaxy S21+ 5G (Only) - Non-Retail Packaging - Black
B0BPZSV47F
$21.79
4.4 (755)
OtterBox Commuter Series Case for Samsung Galaxy S21+ 5G (Only) - Non-Retail Packaging - Black
200 Units Sold/mo
View All 46 Products & Deep InsightsGet full access to sales data, trends, and market analysis

For sellers and category managers benchmarking the s21+ phone case price landscape, we segmented all 46 tracked listings in Amazon's live "s21+ phone case" search results across the full price spectrum, and surfaced the top 3 price tiers by share below to highlight where competition concentrates and where pricing gaps exist.

Leading the distribution, the $10.00 ~ $20.00 band is the category's best s21+ phone case price zone, absorbing 57% of the assortment (100 products) — this is where listing density is highest and where new entrants face the steepest competition for share-of-voice. Use the tier breakdown below to identify the top-ranking ASIN, monthly sales velocity, and rating profile within each band — essential inputs for pricing strategy, sourcing decisions, and competitive benchmarking in the s21+ phone case category.

Top 3 Price Tiers

$10.00 ~ $20.00 is the most competitive price tier, containing 57% of tracked products.

Sweet Spot
$10.00 ~ $20.00
Tier 1
57%
100 products

Top products in this price tier

#1
B08P61PH7X
$27.99
500 Units Sold/mo
Unlock Top Performers
#2
$0.00 ~ $10.00
Tier 2
26%
46 products
$20.00 ~ $50.00
Tier 3
17%
30 products
$50.00 ~ $100.00
0%
Unlock to view all price tier distributions and their ASIN sales contributions

"S21+ phone case" Search Volume and Market Trends on Amazon

Amazon keyword search volume data for "s21+ phone case" in the US marketplace. This report provides insights into keyword search volume, Amazon search trends, competition levels, and conversion efficiency for sellers and brands.

During the week of 2026-07-19 to 2026-07-25, the Amazon USweekly search volume for "s21+ phone case" was approximately 581 searches. The keyword currently holds an Amazon Search Frequency Rank (SFR) of #318,426, climbing 360 positions from the previous week. Additionally, the top 3 products for this keyword capture 25.5% of the total click share and 13.3% of the conversion share, indicating the level of market concentration.

Amazon Search Term
Weekly

s21+ phone case

ASINSIGHT
Search Frequency Rank
318,426
360
Search Volume
581
0.2%
Top 3 Click Share
25.5%
Top 3 Conv. Share
13.3%

Search Volume Trend

Past 3 Years
Past 4 Months
Recent 8 months
Weekly Search Volume
581
View full trends for the past 3 years
JulAugSepOctNovDecJanFebMarAprMayJunJul
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