--- title: "s21 privacy screen protector — Niche Verdict: Skip it (40/100) | Amazon United States - Flapen" canonical_url: "https://flapen.com/amazon/research/us/cell-phones-accessories/s21-privacy-screen-protector" last_updated: "2026-07-10T01:44:46.319Z" locale: en meta: description: "a small market ($41K/yr) — s21 privacy screen protector doesn't clear our bar today." "og:description": "a small market ($41K/yr) — s21 privacy screen protector doesn't clear our bar today." "og:title": "s21 privacy screen protector — Niche Verdict: Skip it (40/100) | Amazon United States - Flapen" --- Back to Flapen home # **s21 privacy screen protector** **Skip it****40/100 ** a small market ($41K/yr) — s21 privacy screen protector doesn't clear our bar today. **Market/yr** **$41K** **Growth (1y)** **+53.6%** **Products** **21** **Brands** **21** was 10 a year ago **Sellers** **27** **Price range** **$5.97–$18.30** **Returns** **3.8%** **Rating** **4.1★** **Skip it** Scored 40/100 across market size, growth, competition, quality gap, and returns. Market sizeGrowthCompetitionQuality gapReturns Market size **2** ×0.30 Growth **51** ×0.30 Competition **49** ×0.20 Quality gap **78** ×0.10 Returns **69** ×0.10 ## **Demand** Weekly Amazon search volume, last 99 weeks — +53.6% year over year. 1K628.5Spike '25Jul '24Dec '24Mar '25Jul '25Nov '25Feb '26 ## **Seasonality** Monthly demand index across the year — 1.00 is average. JFMAMJJASOND Peak months: Jul · busiest ÷ quietest = 1.7× ## **Competition** - HPTech21% - UniqueMe13% - CHRINECY11% - Geviaho7% - BIGFLYANTS6% - Fynorao6% - Other (15 brands)37% The top 5 products take 57% of clicks — established leaders, but buyers still shop beyond them. 21 brands and 27 sellers compete here. **Brands** **21 **▲rising was 10 a year ago **Sellers** **27** **Top 5 brand share** **57%** #ProductBrandPriceRatingReviewsClick shareTrend 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**](https://www.amazon.com/dp/B0D1FXTDT7) HPTech$6.054.2★2,07421%▲rising 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**](https://www.amazon.com/dp/B091C7SFPP) UniqueMe$15.034.3★32,70413%▼falling 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**](https://www.amazon.com/dp/B0BPSRPFBZ) CHRINECY$8.634.1★98811%▼falling 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](https://m.media-amazon.com/images/I/41RNfmd7C-L.jpg) [**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**](https://www.amazon.com/dp/B0GXPDCNSP) Geviaho$12.194.3★1,0337%▲rising 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](https://m.media-amazon.com/images/I/41jITbRqfkL.jpg) [**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**](https://www.amazon.com/dp/B0G5278SXK) BIGFLYANTS$7.644.0★2806%▲rising 6 ![Fynorao Privacy Screen Protector for Samsung Galaxy S21 Anti-Spy Tempered Glass 9H Hardness Anti-Scratch Shatterproof 2.5D Curved Edges Bubble-Free Easy Install Case Friendly - 3 Pack](https://m.media-amazon.com/images/I/41gwpzuRx8L.jpg) [**Fynorao Privacy Screen Protector for Samsung Galaxy S21 Anti-Spy Tempered Glass 9H Hardness Anti-Scratch Shatterproof 2.5D Curved Edges Bubble-Free Easy Install Case Friendly - 3 Pack**](https://www.amazon.com/dp/B0DQBB5DCP) Fynorao$9.234.0★486%▲rising 7 ![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)](https://m.media-amazon.com/images/I/41O9SRhbIFL.jpg) [**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)**](https://www.amazon.com/dp/B0GWLY18WH) SunColorful$11.064.3★1946%▲rising 8 ![Slanku [3 Pack Privacy Screen Protector for Samsung Galaxy S21 Tempered Glass Film Anti-Spy Case Friendly 9H Hardness Black](https://m.media-amazon.com/images/I/41wouZQykBL.jpg) [**Slanku \[3 Pack Privacy Screen Protector for Samsung Galaxy S21 Tempered Glass Film Anti-Spy Case Friendly 9H Hardness Black**](https://www.amazon.com/dp/B0CZKVXSLM) Slanku$7.083.9★1985%▼falling 9 ![MSTSKTWO 2 Pack Privacy Screen Protector for Samsung Galaxy S21 5G with 2 Pack Camera Lens Protector 9H Hardness Anti Spy Tempered Glass](https://m.media-amazon.com/images/I/31IMSr5pcqL.jpg) [**MSTSKTWO 2 Pack Privacy Screen Protector for Samsung Galaxy S21 5G with 2 Pack Camera Lens Protector 9H Hardness Anti Spy Tempered Glass**](https://www.amazon.com/dp/B0GKF4DHKR) MSTSKTWO$7.923.1★125%▲rising 10 ![Amleute 2+1 Pack Designed for Samsung Galaxy S21 Privacy Screen ProtectorSupport Fingerprint Unlock 9H Tempered Glass AntiSpy Film Compatible with Samsung S21 5G](https://m.media-amazon.com/images/I/41DJ7gvXwNL.jpg) [**Amleute 2+1 Pack Designed for Samsung Galaxy S21 Privacy Screen ProtectorSupport Fingerprint Unlock 9H Tempered Glass AntiSpy Film Compatible with Samsung S21 5G**](https://www.amazon.com/dp/B0G48TVP2H) Amleute$7.974.1★525%▲rising 11 ![KAREEN 2+2 Pack Privacy Screen Protector for Samsung Galaxy S21 5G Anti Spy Private Tempered Glass Film with Camera Lens Protector Anti-Scratch Bubble Free Case Friendly](https://m.media-amazon.com/images/I/41TsDDreWLL.jpg) [**KAREEN 2+2 Pack Privacy Screen Protector for Samsung Galaxy S21 5G Anti Spy Private Tempered Glass Film with Camera Lens Protector Anti-Scratch Bubble Free Case Friendly**](https://www.amazon.com/dp/B0F62XTJXC) KAREEN$7.134.4★3463%▼falling 12 ![LZAYN 2 Pack Privacy Screen Protector Designed for Samsung Galaxy S21 5G Full Coverage Anti-Spy Tempered Glass Film 9H Hardness Anti-Fingerprint Bubble Free Easy to Install](https://m.media-amazon.com/images/I/31kBh9IhJsL.jpg) [**LZAYN 2 Pack Privacy Screen Protector Designed for Samsung Galaxy S21 5G Full Coverage Anti-Spy Tempered Glass Film 9H Hardness Anti-Fingerprint Bubble Free Easy to Install**](https://www.amazon.com/dp/B0D9VXH3QK) LZAYN$8.484.1★602%—flat 13 ![MAYtobe [2-Pack Privacy Screen Protector for Samsung Galaxy S21 5G Tempered Glass No Bubbles Anti Scratch Easy to Install](https://m.media-amazon.com/images/I/41BMMU2bt7L.jpg) [**MAYtobe \[2-Pack Privacy Screen Protector for Samsung Galaxy S21 5G Tempered Glass No Bubbles Anti Scratch Easy to Install**](https://www.amazon.com/dp/B0FKYL6GK7) MAYtobe$5.974.4★132%▲rising 14 ![Diacube 2 Pack Privacy Screen Protector for Samsung Galaxy S21 6H Hardness Glass Coated PET Anti-Spy Anti-Peep Supports Fingerprint Sensor](https://m.media-amazon.com/images/I/414Atut+pAL.jpg) [**Diacube 2 Pack Privacy Screen Protector for Samsung Galaxy S21 6H Hardness Glass Coated PET Anti-Spy Anti-Peep Supports Fingerprint Sensor**](https://www.amazon.com/dp/B0BRMMM62T) Diacube$16.044.3★2811%—flat 15 ![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 \[Support Fingerprint Unlock\] \[Self-Healing\] \[Not Glass\]**](https://www.amazon.com/dp/B0GF6HWCMV) QUESPLE$16.884.1★521%▲rising **~~Showing 15 of 21 — show all ~~** ## **Product shelf** All 21 tracked products in this niche. Top sellersNewestTrending [![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 reviews](https://www.amazon.com/dp/B0D1FXTDT7) [![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 reviews](https://www.amazon.com/dp/B091C7SFPP) [![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 reviews](https://www.amazon.com/dp/B0BPSRPFBZ) [![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](https://m.media-amazon.com/images/I/41RNfmd7C-L.jpg)**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 reviews](https://www.amazon.com/dp/B0GXPDCNSP) [![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](https://m.media-amazon.com/images/I/41jITbRqfkL.jpg)**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 reviews](https://www.amazon.com/dp/B0G5278SXK) [![Fynorao Privacy Screen Protector for Samsung Galaxy S21 Anti-Spy Tempered Glass 9H Hardness Anti-Scratch Shatterproof 2.5D Curved Edges Bubble-Free Easy Install Case Friendly - 3 Pack](https://m.media-amazon.com/images/I/41gwpzuRx8L.jpg)**Fynorao Privacy Screen Protector for Samsung Galaxy S21 Anti-Spy Tempered Glass 9H Hardness Anti-Scratch Shatterproof 2.5D Curved Edges Bubble-Free Easy Install Case Friendly - 3 Pack** Fynorao**$9.23**4.0★48 reviews](https://www.amazon.com/dp/B0DQBB5DCP) [![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)](https://m.media-amazon.com/images/I/41O9SRhbIFL.jpg)**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★194 reviews](https://www.amazon.com/dp/B0GWLY18WH) [![Slanku [3 Pack Privacy Screen Protector for Samsung Galaxy S21 Tempered Glass Film Anti-Spy Case Friendly 9H Hardness Black](https://m.media-amazon.com/images/I/41wouZQykBL.jpg)**Slanku \[3 Pack Privacy Screen Protector for Samsung Galaxy S21 Tempered Glass Film Anti-Spy Case Friendly 9H Hardness Black** Slanku**$7.08**3.9★198 reviews](https://www.amazon.com/dp/B0CZKVXSLM) ## **Reviews** 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-Overall61% - Compatibility-Overall12% - Functionality-Overall10% - Advertised Vs Actual Product3% - Touch Screen3% - Security2% - Value For Money1% - Product Condition1% - Display-Overall1% - Defective Material/Parts1%