S21 Ultra Case
FailDemand is soft, at -17.2% this quarter, so S21 Ultra Case is a Fail.
- Flapen Score
- 48 / 100Top 31% of 1,488 Electronics & Photo niches · +4 vs the category median of 4448
- Market size
- £82K/yr243K searches / yr
- 90-day growth
- -17.2%search demand this quarter
- Competition
- 36%top-5 click share · 38 brands · 47 sellers
Flapen Score
S21 Ultra Case against its category
The dotted line is the Electronics & Photo average. Past it, S21 Ultra Case is stronger. Inside it, weaker.
Market
The S21 Ultra Case market on Amazon at a glance
Shoppers on Amazon United Kingdom searched for S21 Ultra Case 243K times last year and spent an estimated £82K. The top 5 brands take 37% of clicks. Demand peaks in Sep. Flapen scores it 48 out of 100, a Fail.
01 · Demand
An estimated 3.8% of those searches ended in a purchase.
Shoppers searched for this 243K times in the last 12 months. That counts every search on Amazon United Kingdom for this niche's terms. An estimated 3.8% of those searches ended in a purchase. Searches in the last 90 days moved -17.2% against the 90 days before. Searches, conversion and average price together put the market at an estimated £82K a year.
- Searches, last 12 months
- 243K
- Growth, 90 days vs prior 90
- -17.2%
- Conversion, latest week
- 3.8%
- Market size, estimated
- £82Ka year
- Peak month
- September1.8× the quietest month
- Top search term
- samsung s21 ultra case85K searches a year
02 · Price
A sale here is worth £8.96.
Listings sell for £8.96 on average, from £3.09 to £17.23. Amazon reports units sold in ranges. This niche sold 6K to 8K a year. The average listing sells 100 to 250 of them. At £8.96 that is £896 to £2K a year per listing.
- Average price
- £8.96under the $15 to $100 sweet spot
- Price range
- £3.09–£17.23
- Amazon United Kingdom median price
- £12.12across 27,606 niches
- Units sold a year
- 6K–8K
- Units per listing a year
- 100–250
- Revenue per listing a year
- £896–£2K
- Returns
- 2.9%of orders · Amazon United Kingdom median 0.6%
03 · Entry bar
The bar here is reviews.
82% of listings pay for placement with sponsored ads. 100% ship with Prime. On an average day, 6.3% of listings are out of stock. The average listing ranks #3,057 within Cases & Covers. It carries 2,851 reviews at 4.33 stars, so a new listing needs social proof before a better product.
- Sponsored listings
- 82%
- Prime listings
- 100%
- Out of stock, average day
- 6.3%
- Average rank
- #3,057in Cases & Covers
- Average rating
- 4.33 starsAmazon United Kingdom average 4.36 stars
- Average reviews
- 2,851per listing
- Listings tracked
- 45
04 · Newcomers
0 of last year's 5 launches cleared the first-year sales bar.
5 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 38 months on average, so the names here are settling in.
- Launched, last 12 months
- 5
- Successful launches
- 0Amazon's first-year sales bar
- Average brand age
- 38 months
Products
Top S21 Ultra 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
imluckies Shockproof Case for Samsung Galaxy S21 Ultra with Sliding Camera Cover Slim Fit& Scratch-Resistant Camera Lens Protection Case for Samsung Galaxy S21 Ultra 5G 6.8- Black
- Price
- £9.12
- Rating
- 4.4/5
- Reviews
- 7,212
- Age
- 5y ago

HikerClub Galaxy S21 Ultra 5G Case Compatible with Mag Safe Wireless Charger Translucent Frosted Matte Back Soft Silicone Frame Military Grade Shockproof Case Cover for Galaxy S21Ultra Matte Black
- Price
- £11.10
- Rating
- 4.6/5
- Reviews
- 851
- Age
- 4y ago

Dexnor Case for Samsung Galaxy S21 Ultra 5G 6.8 Inch with Built-in Screen Protector Military Grade Armour Heavy Duty 360 Full Body Shockproof Bumper Protection Cover with Stand - Black
- Price
- £15.94
- Rating
- 4.1/5
- Reviews
- 4,705
- Age
- 5y ago

Spigen Rugged Armor Case for Samsung Galaxy S21 Ultra - Matte Black
- Price
- £13.37
- Rating
- 4.6/5
- Reviews
- 5,243
- Age
- 5y ago
![KaiMai for Samsung S21 Ultra Case [10 FT Military Grade Drop Protection] [Non-Slip] [2 pcs TPE HD Screen Protector] Heavy Duty Full-Body Shockproof Case for Samsung Galaxy S21 Ultra 5G 6.8-Black](https://m.media-amazon.com/images/I/51Nko2ABu6L.jpg)
KaiMai for Samsung S21 Ultra Case [10 FT Military Grade Drop Protection] [Non-Slip] [2 pcs TPE HD Screen Protector] Heavy Duty Full-Body Shockproof Case for Samsung Galaxy S21 Ultra 5G 6.8-Black
- Price
- £6.28
- Rating
- 4.4/5
- Reviews
- 94
- Age
- 1y ago
Trending
estimated 90-day click momentum
SUANDUCK for Samsung Galaxy S21 Ultra mobile phone case leather flip case with RFID-blocking card compartment adjustable stand and 360 drop protection with Samsung S21 Ultra Light Blue
- Price
- £17.23
- Rating
- 4.1/5
- Reviews
- 9
- Age
- 8mo ago

Kuafcase for Samsung S21 Ultra Case Wallet Leather Flip Case with 4 Card Slots Magnetic Closure Kickstand Shockproof Protective Phone Case for Samsung Galaxy S21 Ultra - Black
- Price
- £7.83
- Rating
- 4.4/5
- Reviews
- 424
- Age
- 3y ago

HikerClub Galaxy S21 Ultra 5G Case Compatible with Mag Safe Wireless Charger Translucent Frosted Matte Back Soft Silicone Frame Military Grade Shockproof Case Cover for Galaxy S21Ultra Matte Black
- Price
- £11.10
- Rating
- 4.6/5
- Reviews
- 851
- Age
- 4y ago

AYMECL for S21 Ultra Case with Slide Camera Cover 1Pcs Self-Healing Screen Protector Heavy Duty Shockproof Protective Case with Rotated Ring Kickstand for Samsung Galaxy S21 Ultra 5G Black
- Price
- £5.07
- Rating
- 4.4/5
- Reviews
- 87
- Age
- 2y ago

GiiYoon Case Compatible with Samsung Galaxy S21 Ultra 5G Silky-Soft Touch Full-Body Protective Phone Silicone Case Shockproof Cover with Microfiber Lining Black
- Price
- £7.62
- Rating
- 4.2/5
- Reviews
- 14,799
- Age
- 4y ago
Newest
by launch date
SUANDUCK for Samsung Galaxy S21 Ultra mobile phone case leather flip case with RFID-blocking card compartment adjustable stand and 360 drop protection with Samsung S21 Ultra Light Blue
- Price
- £17.23
- Rating
- 4.1/5
- Reviews
- 9
- Age
- 8mo ago

Pilaru Sliding Card Holder Case for Samsung S21 Ultra | Hidden Slot Cards | 2 screen protectors | Shockproof & Anti-Slip Protective Wallet Cover | Durable Dual-Layer Design for Galaxy S21 Ultra Black
- Price
- £7.67
- Rating
- 4.3/5
- Reviews
- 513
- Age
- 9mo ago
![for Samsung S21 Ultra Phone Case with Screen Protector:[Military Grade Drop Tested] Ring Holder Kickstand Shockproof Anti-Slip Protective Phone Case for Samsung Galaxy S21 Ultra 6.8- Blue](https://m.media-amazon.com/images/I/51mzHLUpeHL.jpg)
for Samsung S21 Ultra Phone Case with Screen Protector:[Military Grade Drop Tested] Ring Holder Kickstand Shockproof Anti-Slip Protective Phone Case for Samsung Galaxy S21 Ultra 6.8- Blue
- Price
- £7.44
- Rating
- 4.0/5
- Reviews
- 27
- Age
- 10mo ago
![AWZHYDT for Samsung S21 Ultra 5G Case with 1 HD Screen Protector & Slide Camera Cover [Military-Grade] Phone Case Heavy Duty Rugged Shockproof Protective Cover for Samsung Galaxy S21 Ultra(Cyan/Pink)](https://m.media-amazon.com/images/I/41ityu8B1nL.jpg)
AWZHYDT for Samsung S21 Ultra 5G Case with 1 HD Screen Protector & Slide Camera Cover [Military-Grade] Phone Case Heavy Duty Rugged Shockproof Protective Cover for Samsung Galaxy S21 Ultra(Cyan/Pink)
- Price
- £8.29
- Rating
- 4.5/5
- Reviews
- 23
- Age
- 1y ago

Jshru for Samsung S21 Ultra Case with Screen Protector-Camera Protective Cover Ring Stand Phone Case for Men and Women Shockproof Bumper Phone Cover for Samsung Galaxy S21 Ultra Black
- Price
- £7.85
- Rating
- 4.4/5
- Reviews
- 1,158
- Age
- 1y ago
Competition
Competition: brands, sellers & click share
The top 5 products take an estimated 36% of clicks, no more. An open shelf where new products get seen.
Brands
38 falling
Sellers
47
Est. top-5 brand share
37%
Top 20: 86%
Est. top-5 click share
36%
Top 20: 80%
Open market
57%
- imluckies9%
- HikerClub8%
- Dexnor7%
- GiiYoon7%
- Spigen6%
- KaiMai6%
Demand
S21 Ultra Case search demand
Weekly searches over the year, seasonality beneath. Pick a range.
Peak months: Sep · busiest ÷ quietest = 1.8×
Search terms
Top S21 Ultra Case search terms shoppers use
The exact words shoppers type, with estimated yearly volume, growth, and conversion.
- samsung s21 ultra case85K/yr
- s21 ultra phone case79K/yr
- samsung galaxy s21 ultra case26K/yr
- s21 ultra case20K/yr
- galaxy s21 ultra case12K/yr
- samsung galaxy s21 ultra 5g case10K/yr
- samsung s21 ultra phone case10K/yr
Reviews and returns
What reviews say buyers love and hate about S21 Ultra Case
We read the reviews and the return reasons for every product selling here.
“It Does Not Fit The Phone”
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.
18 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 S21 Ultra 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









