---
title: "Samsung S21 Case — £138K/yr Amazon UK Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/uk/electronics-photo/samsung-s21-case"
last_updated: "2026-07-31T16:12:38.796Z"
locale: en
meta:
description: "Niche score 48/100 · £138K/yr market · 558K searches/yr · £7.81 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 48/100 · £138K/yr market · 558K searches/yr · £7.81 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Samsung S21 Case — £138K/yr Amazon UK Niche (2026) - Flapen"
---
# **samsung s21 case**
**Skip it**
Prices mostly outside the sweet spot ($2.16–$16.80) — this niche doesn't clear our bar today.
Market size 30Growth 18Conversion 40Competition 77Returns 40Price range 12Avg price 22Brand share 93Review moat 37Quality gap 78
**Brand share**
**Great****42%**
top-5 brand share — no brand owns this niche
**Quality gap**
**Great****4.3★**
avg incumbent rating — lower means beatable quality
**Competition**
**Great****38%**
top-5 click share — an open shelf
**Conversion**
**Okay****3.2%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Okay****3.8%**
return rate — above 5% kills the launch gate
**Review moat**
**Okay****2,773.84**
avg incumbent reviews — the moat a new listing must climb
**Market size**
**Okay****£138K**
£138K/yr · 558K searches
**Avg price**
**Bad****£7.81**
avg listing price — sweet spot $15–$100
**Growth**
**Bad****-13.6%**
90-day search growth — must beat 0% to launch
**Price range**
**Bad****£2.16–£16.80**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Signals**[** No Dominant Brand**](https://flapen.com/research/niches?market=uk&signal=no_dominant_brand "Top brand's click share < 20%")
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 ~~](https://flapen.com/research/methodology)
## **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.
18K13K seasonSepDecMarJunAugNovMarMay
No pronounced peak months · busiest ÷ quietest = 1.5×
[**Open Trend **](https://flapen.com/research/uk/electronics-photo/samsung-s21-case/trend)
## **Top samsung s21 case search terms**
- **samsung s21 case**147K/yr-14.1%2.5% conv. - **s21 phone case**123K/yr-13.7%2.7% conv. - **samsung galaxy s21 case**52K/yr-11.1%2.3% conv. - **galaxy s21 case**43K/yr-12.1%2.3% conv. - **samsung s21 phone case**36K/yr-17.2%1.6% conv. - **galaxy s21 5g case**27K/yr-9.5%2.1% conv. - **samsung s21 5g phone case**16K/yr-9.0%1.4% conv. - **s21 5g phone case**15K/yr-4.4%1.8% conv. - **s21 case**17K/yr-16.2%2.6% conv. - **samsung galaxy s21 phone case**12K/yr-8.4%1.1% conv. [**All search terms **](https://flapen.com/research/uk/electronics-photo/samsung-s21-case/search-terms)
## **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.
0%3%£4K6%£8K9%£12K12%£17K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 24 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1![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**£6.25**4.5★5,386 rev](https://www.amazon.co.uk/dp/B0DBR7YB1L) [2**YATWIN Silicone Case for Samsung Galaxy S21 Soft-Touch Shockproof Slim Durable Phone Cover - Dark Green**YATWIN**£5.51**4.2★367 rev](https://www.amazon.co.uk/dp/B0B1CWCQJ7) [3**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**£3.97**4.6★1,970 rev](https://www.amazon.co.uk/dp/B08VRMTSPH) [4**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**£8.78**4.4★7,772 rev](https://www.amazon.co.uk/dp/B08Z7JCZ78) [5**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**£7.82**4.3★1,003 rev](https://www.amazon.co.uk/dp/B0BGJ1NHXC)
**~~View all top sellers →~~**
### **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**£5.68**1,067 rev5mo ago](https://www.amazon.co.uk/dp/B0GK1T66HQ) [**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**£16.80**19 rev10mo ago](https://www.amazon.co.uk/dp/B0FLK2LS9T) [![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**£8.26**17 rev1y ago](https://www.amazon.co.uk/dp/B0F98WWGM6) [**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**£7.35**513 rev1y ago](https://www.amazon.co.uk/dp/B0F93QSKWZ) [![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**£6.25**5,386 rev1y ago](https://www.amazon.co.uk/dp/B0DBR7YB1L)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**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**£5.68**4.6★**▲ 381%**](https://www.amazon.co.uk/dp/B0GK1T66HQ) [**YATWIN Silicone Case for Samsung Galaxy S21 Soft-Touch Shockproof Slim Durable Phone Cover - Dark Blue**YATWIN**£7.27**4.5★**▲ 260%**](https://www.amazon.co.uk/dp/B0BNBQRPFL) [**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**£16.80**3.6★**▲ 216%**](https://www.amazon.co.uk/dp/B0FLK2LS9T) [**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**£7.60**4.4★**▲ 152%**](https://www.amazon.co.uk/dp/B08V1RBGNX) [**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**£2.61**3.9★**▲ 110%**](https://www.amazon.co.uk/dp/B0BQ6M3V55)
**~~View all trending →~~**
## **What buyers say about samsung s21 case**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**28%
*“Fits well”*
**Quality-Overall**20%
*“Quality case”*
**Value For Money**15%
*“Excellent value”*
**Drop/Impact Protection**8%
*“reasonable shock protection”*
**Color**5%
*“Brilliant quality and lovely colour”*
**Strength**4%
*“Solid phone case”*
**Advertised Vs Actual Product**4%
*“Accurate product description”*
**Durability**3%
*“very durable”*
**Ease Of Use**2%
*“Useful”*
**Material Quality**2%
*“Nice material”*
### **What buyers complain about **
**Size-Overall**37%
*“case doesn't fit”*
**Quality-Overall**10%
*“poor quality control”*
**Compatibility-Overall**7%
*“Didn't fit phone”*
**Durability**6%
*“It only took one drop for it to break”*
**Strength**5%
*“This case is very fragile”*
**Advertised Vs Actual Product**5%
*“false advertising”*
**Color**5%
*“Colour chipping off”*
**Magnetic Strength/Adsorption**4%
*“the magnet strength is very bad wouldn't recommend”*
**Ease Of Use**2%
*“Hence very impractical”*
**Heating**2%
*“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 **
**Size-Overall**75%
**Compatibility-Overall**10%
**Functionality-Overall**2%
**Magnetic Strength/Adsorption**2%
**Advertised Vs Actual Product**2%
**Quality-Overall**2%
**Defective Material/Parts**1%
**Color**1%
**Charging**1%
**Touch/Button Controls**1%
## **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.
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