Samsung S21 Plus Case
FailShoppers spend an estimated $28K a year here, so Samsung S21 Plus Case is a Fail.
- Flapen Score
- 44 / 100Ranks 708 of 1,488 Electronics & Photo niches · on the category median44
- Market size
- £28K/yr100K searches / yr
- 90-day growth
- -15.6%search demand this quarter
- Competition
- 44%top-5 click share · 33 brands · 54 sellers
Flapen Score
Samsung S21 Plus Case against its category
The dotted line is the Electronics & Photo average. Past it, Samsung S21 Plus Case is stronger. Inside it, weaker.
Market
The Samsung S21 Plus Case market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for Samsung S21 Plus Case 100K times last year and spent an estimated £28K. The top 5 brands take 46% of clicks. Flapen scores it 44 out of 100, a Fail.
01 · Demand
An estimated 3.5% of those searches ended in a purchase.
Shoppers searched for this 100K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 3.5% of those searches ended in a purchase. Searches in the last 90 days moved -15.6% against the 90 days before. Searches, conversion and average price together put the market at an estimated £28K a year.
- Searches, last 12 months
- 100K
- Growth, 90 days vs prior 90
- -15.6%
- Conversion, latest week
- 3.5%
- Market size, estimated
- £28Ka year
- Peak month
- August1.7× the quietest month
- Top search term
- samsung s21 plus case22K searches a year
02 · Price
A sale here is worth £8.16.
Listings sell for £8.16 on average, from £2.14 to £27.34. Amazon reports units sold in ranges. This niche sold 3K to 4K a year. The average listing sells 0 to 100 of them. At £8.16 that is £0 to £816 a year per listing.
- Average price
- £8.16under the $15 to $100 sweet spot
- Price range
- £2.14–£27.34
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 3K–4K
- Units per listing a year
- 0–100
- Revenue per listing a year
- £0–£816
- Returns
- 3.3%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is reviews.
81% of listings pay for placement with sponsored ads. 98% ship with Prime. On an average day, 10.4% of listings are out of stock. The average listing ranks #3,776 within Cases & Covers. It carries 2,283 reviews at 4.37 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 81%
- Prime listings
- 98%
- Out of stock, average day
- 10.4%
- Average rank
- #3,776in Cases & Covers
- Average rating
- 4.37 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 2,283per listing
- Listings tracked
- 42
04 · Newcomers
0 of last year's 7 launches cleared the first-year sales bar.
7 products launched here in the last 12 months. 0 of them cleared the first-year sales bar, our mark for a successful launch. The brands on the shelf have sold for 35 months on average, so a newcomer is not facing entrenched names.
- Launched, last 12 months
- 7
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 35 months
Products
Top Samsung S21 Plus Case products & what they sell for
The products selling here, as shoppers see them on Amazon. Shelf share and sales are our estimates.
Prices and ratings read from Amazon on Jul 25, 2026. The live listing can differ.
Top sellers
by estimated 90-day click share
for Samsung Galaxy S21 Plus Case with Screen Protector: Heavy Duty Protective Anti-scratch and ShockProof Double-Layer Protection Cover for Samsung S21 Plus (Black)
- Price
- £7.66
- Rating
- 4.3/5
- Reviews
- 55
- Age
- 10mo ago

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
- Price
- £7.60
- Rating
- 4.4/5
- Reviews
- 1,387
- Age
- 5y ago

kwmobile Case for Samsung Galaxy S21 Plus Case - Soft Cover - Shockproof Silicone - Wireless Charging Bordeaux Violet
- Price
- £6.52
- Rating
- 4.4/5
- Reviews
- 22,927
- Age
- 5y ago

KIOMY Clear Case for Samsung Galaxy S21+ / S21 Plus 5G Airbag Corners Shockproof Bumper Protective Phone Cover Hybrid Design Hard PC Back with Flexible TPU Frame
- Price
- £3.79
- Rating
- 4.4/5
- Reviews
- 1,409
- Age
- 5y ago

Cyber-Tech Black Case Compatible with Samsung Galaxy S21 5G Plus Slim Liquid Silicone Shockproof Phone Case with Soft Microfiber Lining
- Price
- £3.49
- Rating
- 4.2/5
- Reviews
- 35
- Age
- 2y ago
Trending
estimated 90-day click momentum![for Samsung S21 Plus Case with Screen Protector: [Military Grade 20ft. Drop Tested] Slide Camera Cover Ring Shockproof Protective Phone Case for - Samsung Galaxy S21 Plus (Black)](https://m.media-amazon.com/images/I/51N-+gDkVYL.jpg)
for Samsung S21 Plus Case with Screen Protector: [Military Grade 20ft. Drop Tested] Slide Camera Cover Ring Shockproof Protective Phone Case for - Samsung Galaxy S21 Plus (Black)
- Price
- £7.56
- Rating
- 4.4/5
- Reviews
- 800
- Age
- 6mo ago

Azororo Case for Samsung Galaxy S21 Plus 5G Premium Leather Phone Cover Magnetic Stand Flip Case with Wallet Card Slot Cover for Samsung Galaxy S21 Plus -Black
- Price
- £10.45
- Rating
- 4.5/5
- Reviews
- 5,067
- Age
- 1y ago

for Samsung Galaxy S21 Plus Case with Screen Protector: Heavy Duty Protective Anti-scratch and ShockProof Double-Layer Protection Cover for Samsung S21 Plus (Black)
- Price
- £7.66
- Rating
- 4.3/5
- Reviews
- 55
- Age
- 10mo ago

Pilaru Sliding Card Holder Case for Samsung S21 Plus | Hidden Slot Cards | 2 screen protectors | Shockproof & Anti-Slip Protective Wallet Cover | Durable Dual-Layer Design for Galaxy S21 Plus Black
- Price
- £7.55
- Rating
- 4.3/5
- Reviews
- 513
- Age
- 9mo ago

kwmobile Case for Samsung Galaxy S21 Plus Case - Soft Cover - Shockproof Silicone - Wireless Charging Bordeaux Violet
- Price
- £6.52
- Rating
- 4.4/5
- Reviews
- 22,927
- Age
- 5y ago
Newest
by launch date![for Samsung S21 Plus Case with Screen Protector: [Military Grade 20ft. Drop Tested] Slide Camera Cover Ring Shockproof Protective Phone Case for - Samsung Galaxy S21 Plus (Black)](https://m.media-amazon.com/images/I/51N-+gDkVYL.jpg)
for Samsung S21 Plus Case with Screen Protector: [Military Grade 20ft. Drop Tested] Slide Camera Cover Ring Shockproof Protective Phone Case for - Samsung Galaxy S21 Plus (Black)
- Price
- £7.56
- Rating
- 4.4/5
- Reviews
- 800
- Age
- 6mo ago

Pilaru Sliding Card Holder Case for Samsung S21 Plus | Hidden Slot Cards | 2 screen protectors | Shockproof & Anti-Slip Protective Wallet Cover | Durable Dual-Layer Design for Galaxy S21 Plus Black
- Price
- £7.55
- Rating
- 4.3/5
- Reviews
- 513
- Age
- 9mo ago

for Samsung Galaxy S21 Plus Case with Screen Protector: Heavy Duty Protective Anti-scratch and ShockProof Double-Layer Protection Cover for Samsung S21 Plus (Black)
- Price
- £7.66
- Rating
- 4.3/5
- Reviews
- 55
- Age
- 10mo ago

Azororo Case for Samsung Galaxy S21 Plus 5G Premium Leather Phone Cover Magnetic Stand Flip Case with Wallet Card Slot Cover for Samsung Galaxy S21 Plus -Black
- Price
- £10.45
- Rating
- 4.5/5
- Reviews
- 5,067
- Age
- 1y ago
![FNDMIL [NO.1 Magnetic for Samsung Galaxy S21 Plus Case with MagSafe[Military Grade Drop Tested][Translucent Matte][Anti-Fingerprint] Slim Case Soft Silicone Bumper for Samsung Galaxy S21+ Case Black](https://m.media-amazon.com/images/I/41crcWPIMPL.jpg)
FNDMIL [NO.1 Magnetic for Samsung Galaxy S21 Plus Case with MagSafe[Military Grade Drop Tested][Translucent Matte][Anti-Fingerprint] Slim Case Soft Silicone Bumper for Samsung Galaxy S21+ Case Black
- Price
- £14.10
- Rating
- 4.3/5
- Reviews
- 1,425
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 44% of clicks. Leaders hold, but buyers still shop past them.
Brands
33 falling
Sellers
54
Est. top-5 brand share
46%
Top 20: 90%
Est. top-5 click share
44%
Top 20: 81%
Open market
48%
- Jihucase12%
- LOLFZ10%
- kwmobile8%
- KIOMY8%
- Pilaru7%
- Cyber-Tech6%
Demand
Samsung S21 Plus Case search demand
Weekly searches over the year, seasonality beneath. Pick a range.
No pronounced peak months · busiest ÷ quietest = 1.7×
Search terms
Top Samsung S21 Plus Case search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- samsung s21 plus case22K/yr
- s21 plus phone case19K/yr
- s21+ phone case13K/yr
- samsung s21+ case11K/yr
- samsung galaxy s21 plus case10K/yr
- samsung s21 plus phone case9K/yr
- s21 plus case5K/yr
- samsung galaxy s21+ case3K/yr
- galaxy s21 plus case2K/yr
- samsung s21 + case2K/yr
Reviews and returns
What reviews say buyers love and hate about Samsung S21 Plus Case
We read the reviews and the return reasons for every product selling here.
“Too small”
Every topic
Every topic buyers talk about, one row each.
Red shows the share of negative reviews and green the share of positive reviews, biggest topic first. Open a row to read what they wrote.
17 topics
Keep looking
Related niches
Niches in the same category that score near this one. Research these next.
Best Flapen score
The highest-scoring niches we track right now, across every category.
FAQ
Common Samsung S21 Plus Case questions
Answered from the same tracked data.
Figures on this page are estimates modeled from public Amazon pages and third-party keyword data. Amazon does not supply them, and no connected seller's data is used. How we handle Amazon data









