samsung s21 case
Skip itPrices mostly outside the sweet spot ($2.16–$16.80) — this niche doesn't clear our bar today.
Brand share
Great42%top-5 brand share — no brand owns this niche
Quality gap
Great4.3★avg incumbent rating — lower means beatable quality
Competition
Great38%top-5 click share — an open shelf
Conversion
Okay3.2%search→purchase rate — share of searches ending in a sale
Returns
Okay3.8%return rate — above 5% kills the launch gate
Review moat
Okay2,773.84avg incumbent reviews — the moat a new listing must climb
Market size
Okay£138K£138K/yr · 558K searches
Avg price
Bad£7.81avg listing price — sweet spot $15–$100
Growth
Bad-13.6%90-day search growth — must beat 0% to launch
Price range
Bad£2.16–£16.80cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United Kingdom niche tracking, samsung s21 case is a £138K/yr Amazon United Kingdom market (558K searches/yr). The top 5 brands hold 42% of demand. Verdict: Skip it — 48/100.
Data updated Jul 25, 2026 · scored weekly · How we score niches
samsung s21 case market data
- Units sold / yr
- 15K–20K
- avg 100–250/product
- Revenue / yr
- £117K–£156K
- units × avg price
- Conversion rate
- 3.2%
- Avg BSR
- #2,296
- Page quality
- 0%
- Prime
- 98%
- Sponsored
- 81%
- Out of stock
- 3.0%
- Avg brand age
- 38 months
- Avg seller age
- 198 days
Competition & brand share
Clicks spread well past the top 5 (38% combined) — an open shelf where new products get seen.Brands
42 rising
Sellers
54
Top-5 brand share
42%
Top 20: 81%
Top-5 click share
38%
Top 20: 72%
Open market
54%
- YATWIN12%
- AIMOYU9%
- KIOMY8%
- JETech7%
- KRAFTCARE6%
- LeYi5%
Demand & seasonality
Weekly Amazon search volume, last 104 weeks — -13.6% search growth over the last 90 days.No pronounced peak months · busiest ÷ quietest = 1.5×
Top samsung s21 case search terms
- samsung s21 case147K/yr
- s21 phone case123K/yr
- samsung galaxy s21 case52K/yr
- galaxy s21 case43K/yr
- samsung s21 phone case36K/yr
- galaxy s21 5g case27K/yr
- samsung s21 5g phone case16K/yr
- s21 5g phone case15K/yr
- s21 case17K/yr
- samsung galaxy s21 phone case12K/yr
Top samsung s21 case products on Amazon
Each bubble is one product — market share against review moat; bubble size tracks estimated sales, color grades how beatable the incumbent looks.
All 24 tracked products in this niche — three views at once, no toggling.
Top sellers
by 90-day click share![AIMOYU for Samsung Galaxy S21 5G Case Flip Wallet Leather Phone Case with [4 Card Slots] [Kickstand] [RFID Blocking] Magnetic Protective Shockproof Cover for Samsung S21 Phone Case - Black](https://m.media-amazon.com/images/I/413yrzzeYbL.jpg)
AIMOYU for Samsung Galaxy S21 5G Case Flip Wallet Leather Phone Case with [4 Card Slots] [Kickstand] [RFID Blocking] Magnetic Protective Shockproof Cover for Samsung S21 Phone Case - Black
AIMOYU£6.254.5★5,386 rev
YATWIN Silicone Case for Samsung Galaxy S21 Soft-Touch Shockproof Slim Durable Phone Cover - Dark Green
YATWIN£5.514.2★367 rev
Transparent protective case for Samsung Galaxy S21 5G - Hybrid design - Hard polycarbonate back with flexible TPU frame - Slim fit - For men women boys and girls - 4 corners
KIOMY£3.974.6★1,970 rev
JETech Slim Fit Case Compatible with Samsung Galaxy S21 5G 6.2-Inch Thin Phone Cover with Shock-Absorption and Carbon Fiber Design (Black)
JETech£8.784.4★7,772 rev
KRAFTCARE for Samsung S21 Case with Kickstand Ring and Screen Protector Shockproof and Anti Scratch 360 Magnetic Ring Holder Stand Phone Cover for Samsung Galaxy S21 - Dark Green
KRAFTCARE£7.824.3★1,003 rev
Newest
by launch date
LeYi for Samsung Galaxy S21 5G-6.2 Inch Phone Case with Camera Cover Slider |2 Tempered Glass Screen Protectors Ring Stand Holder Rugged Protective Tough Armor Cover for Samsung S21 5G Black
LeYi£5.681,067 rev
SUANDUCK for Samsung Galaxy S21 mobile phone case magnetic leather flip case with RFID-blocking card compartment adjustable stand and 360 drop protection with Samsung S21 Light Blue
SUANDUCK£16.8019 rev
![AWZHYDT for Samsung S21 5G Case with 1 HD Screen Protector & Slide Camera Cover [Military-Grade] Phone Case Heavy Duty Rugged Shockproof Protective Cover for Samsung Galaxy S21(Cyan/Pink)](https://m.media-amazon.com/images/I/41hZtpiL-IL.jpg)
AWZHYDT for Samsung S21 5G Case with 1 HD Screen Protector & Slide Camera Cover [Military-Grade] Phone Case Heavy Duty Rugged Shockproof Protective Cover for Samsung Galaxy S21(Cyan/Pink)
AWZHYDT£8.2617 rev
Pilaru Sliding Card Holder Case for Samsung S21 | Hidden Slot Cards | 2 screen protectors | Shockproof & Anti-Slip Protective Wallet Cover | Durable Dual-Layer Design for Galaxy S21 Black
Pilaru£7.35513 rev
AIMOYU for Samsung Galaxy S21 5G Case Flip Wallet Leather Phone Case with [4 Card Slots] [Kickstand] [RFID Blocking] Magnetic Protective Shockproof Cover for Samsung S21 Phone Case - Black
AIMOYU£6.255,386 rev
Trending
90-day click momentumLeYi for Samsung Galaxy S21 5G-6.2 Inch Phone Case with Camera Cover Slider |2 Tempered Glass Screen Protectors Ring Stand Holder Rugged Protective Tough Armor Cover for Samsung S21 5G Black
LeYi£5.684.6★
YATWIN Silicone Case for Samsung Galaxy S21 Soft-Touch Shockproof Slim Durable Phone Cover - Dark Blue
YATWIN£7.274.5★
SUANDUCK for Samsung Galaxy S21 mobile phone case magnetic leather flip case with RFID-blocking card compartment adjustable stand and 360 drop protection with Samsung S21 Light Blue
SUANDUCK£16.803.6★
LOLFZ Wallet Case for Samsung Galaxy S21 Plus 5G Vintage Leather Book Case with Card Holder Kickstand Magnetic Closure Flip Case Cover for Galaxy S21 Plus 5G - Black
LOLFZ£7.604.4★
Hually Case Compatible with Samsung Galaxy S21 (6.2-inch) Crystal Clear Unique shock Ultra Thin Flexible TPU & Hard PC Cover for Samsung Galaxy S21 - Clear
Hually£2.613.9★
What buyers say about samsung s21 case
What buyers praise and complain about, mined from review topics.What buyers love
“Fits well”
“Quality case”
“Excellent value”
“reasonable shock protection”
“Brilliant quality and lovely colour”
“Solid phone case”
“Accurate product description”
“very durable”
“Useful”
“Nice material”
What buyers complain about
“case doesn't fit”
“poor quality control”
“Didn't fit phone”
“It only took one drop for it to break”
“This case is very fragile”
“false advertising”
“Colour chipping off”
“the magnet strength is very bad wouldn't recommend”
“Hence very impractical”
“But MORE IMPORTANTLY it doesn't let my s21 ventilate at all causing it to overheat. A problem I have never had before”
Top return reasons
Common questions
- Is samsung s21 case profitable to sell on Amazon United Kingdom?
- The niche generates £138K/yr across 57 tracked products. 0 of 7 products launched in the last 360 days are still selling. 90-day search growth is -13.6%. Flapen's verdict: Skip it (48/100).
- How competitive is the samsung s21 case niche?
- 42 brands and 54 sellers compete. The top 5 products take 38% of clicks and top 5 brands hold 42% of demand.
- What do buyers complain about in samsung s21 case?
- Top complaints mined from reviews: Size-Overall, Quality-Overall, Compatibility-Overall. The return rate is 3.8%.
- When does demand for samsung s21 case peak?
- Demand is steady year-round — the busiest month runs 1.5× the quietest.
- What does it cost to enter the samsung s21 case niche?
- Listings span £2.16–£16.80; the average listing price is £7.81 (sweet spot $15–$100). The average incumbent carries 2,774 reviews — the moat a new listing must climb.