---
title: "S21 Privacy Screen Protector — $41K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/cell-phones-accessories/s21-privacy-screen-protector"
last_updated: "2026-08-09T09:50:30.596Z"
locale: en
meta:
description: "Niche score 46/100 · $41K/yr market · 31K searches/yr · $9.86 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 46/100 · $41K/yr market · 31K searches/yr · $9.86 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "S21 Privacy Screen Protector — $41K/yr Amazon US Niche (2026) - Flapen"
---
# **s21 privacy screen protector**
**Skip it**
A small market ($41K/yr) — this niche doesn't clear our bar today.
Market size 10Growth 13Conversion 96Competition 46Returns 40Price range 27Avg price 32Brand share 78Review moat 46Quality gap 89
**Conversion**
**Incredible****13.5%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Great****4.1★**
avg incumbent rating — lower means beatable quality
**Brand share**
**Great****57%**
top-5 brand share — no brand owns this niche
**Competition**
**Okay****57%**
top-5 click share — leaders hold, buyers still browse
**Review moat**
**Okay****1,897.1**
avg incumbent reviews — the moat a new listing must climb
**Returns**
**Okay****3.8%**
return rate — above 5% kills the launch gate
**Avg price**
**Okay****$9.86**
avg listing price — sweet spot $15–$100
**Price range**
**Okay****$5.97–$18.30**
cheapest to priciest tracked listing — scored on the share inside $15–$100
**Growth**
**Bad****-24.5%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$41K**
$41K/yr · 31K searches
According to Flapen's Amazon United States niche tracking, s21 privacy screen protector is a $41K/yr Amazon United States market (31K searches/yr). The top 5 brands hold 57% of demand. Demand peaks in Jul. Verdict: Skip it — 46/100.
Data updated Jul 6, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **s21 privacy screen protector market data**
- **Units sold / yr**
- **3K–4K**
- avg 100–250/product
- **Revenue / yr**
- **$30K–$39K**
- units × avg price
- **Conversion rate**
- **13.5%**
- **Avg BSR**
- **#2,368**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **86%**
- **Out of stock**
- **15.4%**
- **Avg brand age**
- **32 months**
- **Avg seller age**
- **235 days**
## **Competition & brand share**
The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them.
**Brands**
**21 **▲rising
**Sellers**
**27**
**Top-5 brand share**
**57%**
Top 20: 99%
**Top-5 click share**
**57%**
Top 20: 99%
**Open market**
**37%**
- HPTech21% - UniqueMe13% - CHRINECY11% - Geviaho7% - BIGFLYANTS6% - Fynorao6%
## **Demand & seasonality**
Weekly Amazon search volume, last 99 weeks — -24.5% search growth over the last 90 days.
1K750Spike '25 seasonDecMarJunAugNovMarMay
Peak months: Jul · busiest ÷ quietest = 1.7×
[**Open Trend **](https://flapen.com/research/us/cell-phones-accessories/s21-privacy-screen-protector/trend)
## **Top s21 privacy screen protector search terms**
- **s21 privacy screen protector**7K/yr-19.8%7.9% conv. - **galaxy s21 privacy screen protector**5K/yr-16.3%8.3% conv. - **samsung s21 privacy screen protector**4K/yr-28.7%9.0% conv. - **s21 screen protector privacy**4K/yr-8.3%9.3% conv. - **samsung galaxy s21 privacy screen protector**4K/yr-28.8%9.9% conv. - **galaxy s21 screen protector privacy**2K/yr-47.8%13.7% conv. - **privacy screen samsung s21**2K/yr-30.6%8.9% conv. - **samsung s21 screen protector privacy**2K/yr-30.7%11.6% conv. - **privacy screen galaxy s21**1K/yr-29.4%11.7% conv. [**All search terms **](https://flapen.com/research/us/cell-phones-accessories/s21-privacy-screen-protector/search-terms)
## **Top s21 privacy screen protector 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%10%$4K20%$8K30%$12K40%$17K101001K10K100K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 21 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1![HPTech 2 Pack Privacy Screen Protector for Samsung Galaxy S21 Galaxy S21 5G Anti Spy Tempered Glass [Dont Support Fingerprint Unlock] Anti Scratch Bubble Free](https://m.media-amazon.com/images/I/41spRQ5FKmL.jpg)**HPTech 2 Pack Privacy Screen Protector for Samsung Galaxy S21 Galaxy S21 5G Anti Spy Tempered Glass \[Dont Support Fingerprint Unlock\] Anti Scratch Bubble Free**HPTech**$6.05**4.2★2,074 rev](https://www.amazon.com/dp/B0D1FXTDT7) [2![UniqueMe [2+2 Pack] Compatible with Samsung S21 Privacy Screen Protector Tempered Glass and Camera Lens Protector Anti Spy [Easy Installation Frame] Bubble Free](https://m.media-amazon.com/images/I/41WwpT-2pPL.jpg)**UniqueMe \[2+2 Pack\] Compatible with Samsung S21 Privacy Screen Protector Tempered Glass and Camera Lens Protector Anti Spy \[Easy Installation Frame\] Bubble Free**UniqueMe**$15.03**4.3★32,704 rev](https://www.amazon.com/dp/B091C7SFPP) [3![CHRINECY [4 Pack] 2 Pack Privacy Screen Protector for Samsung Galaxy S21 5G with 2 Pack Camera Lens Protector 9H Hardness Anti Spy Tempered Glass Screen Protector](https://m.media-amazon.com/images/I/41QcCH4cNVL.jpg)**CHRINECY \[4 Pack\] 2 Pack Privacy Screen Protector for Samsung Galaxy S21 5G with 2 Pack Camera Lens Protector 9H Hardness Anti Spy Tempered Glass Screen Protector**CHRINECY**$8.63**4.1★988 rev](https://www.amazon.com/dp/B0BPSRPFBZ) [4**Geviaho (2 Pack) Galaxy S21 Privacy Screen Protector Tempered Glass 9H Hardness 2D Curved Full Coverage Bubble Free Support Fingerprint For Samsung Galaxy S21 6.2 Inch**Geviaho**$12.19**4.3★1,033 rev](https://www.amazon.com/dp/B0GXPDCNSP) [5**BIGFLYANTS 2 Pack Privacy Screen Protector for Samsung Galaxy S21 with 2 Camera Lens Protector Anti-Spy Tempered Glass Film Full Coverage Anti-Scratch Bubble Free Easy Installation**BIGFLYANTS**$7.64**4.0★280 rev](https://www.amazon.com/dp/B0G5278SXK)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Geviaho (2 Pack) Galaxy S21 Privacy Screen Protector Tempered Glass 9H Hardness 2D Curved Full Coverage Bubble Free Support Fingerprint For Samsung Galaxy S21 6.2 Inch**Geviaho**$12.19**1,033 rev2mo ago](https://www.amazon.com/dp/B0GXPDCNSP) [**2 Pack For Galaxy S21 Privacy Screen Protector With 2 Pack Camera Lens Protector Anti Spy Private Tempered Glass Film 9H Hardness Anti Fingerprint Scratch Resistant Bubble Free Easy Install(6.2 Inch)**SunColorful**$11.06**194 rev2mo ago](https://www.amazon.com/dp/B0GWLY18WH) [![Cnarery 2 Pack for Samsung Galaxy S21 Matte Privacy Screen Protector 6.2 Inch[Not Glass] Anti-Scratch Anti-Glare Support fingerprint Unlock](https://m.media-amazon.com/images/I/413p8v6zC4L.jpg)**Cnarery 2 Pack for Samsung Galaxy S21 Matte Privacy Screen Protector 6.2 Inch\[Not Glass\] Anti-Scratch Anti-Glare Support fingerprint Unlock**Cnarery**$18.30**65 rev3mo ago](https://www.amazon.com/dp/B0GSJ5GZPX) [**MSTSKTWO 2 Pack Privacy Screen Protector for Samsung Galaxy S21 5G with 2 Pack Camera Lens Protector 9H Hardness Anti Spy Tempered Glass**MSTSKTWO**$7.92**12 rev5mo ago](https://www.amazon.com/dp/B0GKF4DHKR) [![QUESPLE 2 Pack for Samsung Galaxy S21 Anti-Glare Matte Privacy Screen Protector 6.2 inch Smooth and Responsive Touch Flexible EPU Film [Support Fingerprint Unlock] [Self-Healing] [Not Glass]](https://m.media-amazon.com/images/I/41sjyv8PhdL.jpg)**QUESPLE 2 Pack for Samsung Galaxy S21 Anti-Glare Matte Privacy Screen Protector 6.2 inch Smooth and Responsive Touch Flexible EPU Film \[Support Fingerprint Unlock\] \[Self-Healing\] \[Not Glass\]**QUESPLE**$16.88**52 rev6mo ago](https://www.amazon.com/dp/B0GF6HWCMV)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[![Cnarery 2 Pack for Samsung Galaxy S21 Matte Privacy Screen Protector 6.2 Inch[Not Glass] Anti-Scratch Anti-Glare Support fingerprint Unlock](https://m.media-amazon.com/images/I/413p8v6zC4L.jpg)**Cnarery 2 Pack for Samsung Galaxy S21 Matte Privacy Screen Protector 6.2 Inch\[Not Glass\] Anti-Scratch Anti-Glare Support fingerprint Unlock**Cnarery**$18.30**4.1★**▲ 327%**](https://www.amazon.com/dp/B0GSJ5GZPX) [**Geviaho (2 Pack) Galaxy S21 Privacy Screen Protector Tempered Glass 9H Hardness 2D Curved Full Coverage Bubble Free Support Fingerprint For Samsung Galaxy S21 6.2 Inch**Geviaho**$12.19**4.3★**▲ 326%**](https://www.amazon.com/dp/B0GXPDCNSP) [**2 Pack For Galaxy S21 Privacy Screen Protector With 2 Pack Camera Lens Protector Anti Spy Private Tempered Glass Film 9H Hardness Anti Fingerprint Scratch Resistant Bubble Free Easy Install(6.2 Inch)**SunColorful**$11.06**4.3★**▲ 326%**](https://www.amazon.com/dp/B0GWLY18WH) [**Amleute 2+1 Pack Designed for Samsung Galaxy S21 Privacy Screen ProtectorSupport Fingerprint Unlock 9H Tempered Glass AntiSpy Film Compatible with Samsung S21 5G**Amleute**$7.97**4.1★**▲ 325%**](https://www.amazon.com/dp/B0G48TVP2H) [**MSTSKTWO 2 Pack Privacy Screen Protector for Samsung Galaxy S21 5G with 2 Pack Camera Lens Protector 9H Hardness Anti Spy Tempered Glass**MSTSKTWO**$7.92**3.1★**▲ 270%**](https://www.amazon.com/dp/B0GKF4DHKR)
**~~View all trending →~~**
## **What buyers say about s21 privacy screen protector**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Security**21%
*“Overall it does its job with privacy”*
**Drop/Impact Protection**14%
*“Great privacy screen protector”*
**Quality-Overall**11%
*“So overall quality for installation great”*
**Size-Overall**9%
*“Fits great”*
**Advertised Vs Actual Product**7%
*“you get as advertised”*
**Touch/Button Controls**5%
*“neat the fingerprint sensor does work you just have to press a little bit firm to get it to activate other than that I'm not sure about destruction resistance because I have not tried to do anything to it or anything like that”*
**Ease Of Use**5%
*“easiest surprisingly,”*
**Assembly/Installation**4%
*“Looks great, easy to install”*
**Value For Money**2%
*“I guess for the price it will suffice”*
**Ease Of Cleaning**2%
*“I cleaned and dried my phone thoroughly”*
### **What buyers complain about **
**Size-Overall**16%
*“Doesn't fit phone it says it's for”*
**Advertised Vs Actual Product**16%
*“Bad description”*
**Security**12%
*“Doesn't really provide privacy”*
**Functionality-Overall**8%
*“I cant even set new prints with this on”*
**Value For Money**7%
*“Definitely not worth purchasing”*
**Compatibility-Overall**7%
*“not finger print compatible”*
**Touch Screen**6%
*“but even then, it doesn't even fully block out the screen”*
**Durability**4%
*“Impaired phone function AND BROKEN after only 3 weeks”*
**Software/Application**3%
*“My only complaint with this item is my finger scan is not recognized through it to log into my accounts so I had to take it off”*
**Quality-Overall**3%
*“Poor quality”*
### **Top return reasons **
**Size-Overall**61%
**Compatibility-Overall**12%
**Functionality-Overall**10%
**Advertised Vs Actual Product**3%
**Touch Screen**3%
**Security**2%
**Value For Money**1%
**Product Condition**1%
**Display-Overall**1%
**Defective Material/Parts**1%
## **Common questions**
- **Is s21 privacy screen protector profitable to sell on Amazon United States?**
- The niche generates $41K/yr across 21 tracked products. 0 of 9 products launched in the last 360 days are still selling. 90-day search growth is -24.5%. Flapen's verdict: Skip it (46/100).
- **How competitive is the s21 privacy screen protector niche?**
- 21 brands and 27 sellers compete. The top 5 products take 57% of clicks and top 5 brands hold 57% of demand.
- **What do buyers complain about in s21 privacy screen protector?**
- Top complaints mined from reviews: Size-Overall, Advertised Vs Actual Product, Security. The return rate is 3.8%.
- **When does demand for s21 privacy screen protector peak?**
- Demand peaks in Jul; the busiest month runs 1.7× the quietest.
- **What does it cost to enter the s21 privacy screen protector niche?**
- Listings span $5.97–$18.30; the average listing price is $9.86 (sweet spot $15–$100). The average incumbent carries 1,897 reviews — the moat a new listing must climb.
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