---
title: "Galaxy S21 Screen Protector — $330K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/cell-phones-accessories/galaxy-s21-screen-protector"
last_updated: "2026-08-09T12:45:54.427Z"
locale: en
meta:
description: "Niche score 39/100 · $330K/yr market · 238K searches/yr · $8.51 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 39/100 · $330K/yr market · 238K searches/yr · $8.51 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Galaxy S21 Screen Protector — $330K/yr Amazon US Niche (2026) - Flapen"
---
# **galaxy s21 screen protector**
**Skip it**
Prices mostly outside the sweet spot ($4.84–$13.10) — this niche doesn't clear our bar today.
Market size 52Growth 27Conversion 98Competition 11Returns 57Price range 0Avg price 24Brand share 25Review moat 12Quality gap 58
**Conversion**
**Incredible****16.3%**
search→purchase rate — share of searches ending in a sale
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Returns**
**Good****2.7%**
return rate — above 5% kills the launch gate
**Market size**
**Good****$330K**
$330K/yr · 238K searches
**Growth**
**Okay****+1.8%**
90-day search growth — must beat 0% to launch
**Brand share**
**Okay****90%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Bad****$8.51**
avg listing price — sweet spot $15–$100
**Review moat**
**Bad****27,862.38**
avg incumbent reviews — the moat a new listing must climb
**Competition**
**Bad****87%**
top-5 click share — a locked-up shelf
**Price range**
**Bad****$4.84–$13.10**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, galaxy s21 screen protector is a $330K/yr Amazon United States market (238K searches/yr). The top 5 brands hold 90% of demand. Demand peaks in Jul. Verdict: Skip it — 39/100.
Data updated Jul 6, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **galaxy s21 screen protector market data**
- **Units sold / yr**
- **40K–50K**
- avg 5,000–6,000/product
- **Revenue / yr**
- **$340K–$426K**
- units × avg price
- **Conversion rate**
- **16.3%**
- **Avg BSR**
- **#248**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **75%**
- **Out of stock**
- **0.0%**
- **Avg brand age**
- **35 months**
- **Avg seller age**
- **194 days**
## **Competition & brand share**
The top 5 products capture 87% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**7 **▼falling
**Sellers**
**11**
**Top-5 brand share**
**90%**
Top 20: 100%
**Top-5 click share**
**87%**
Top 20: 100%
**Open market**
**2%**
- NEW'C42% - BIGFACE13% - Supershieldz13% - JETech12% - Heenjer10% - iCsapr8% - Open — no brand owns it (1 brand, 2%)
## **Demand & seasonality**
Weekly Amazon search volume, last 104 weeks — +1.8% search growth over the last 90 days.
13K8KPrime Day '25Spike '26 seasonSepDecMarJunAugNovMarMay
Peak months: Jul · busiest ÷ quietest = 1.8×
[**Open Trend **](https://flapen.com/research/us/cell-phones-accessories/galaxy-s21-screen-protector/trend)
## **Top galaxy s21 screen protector search terms**
- **s21 screen protector**56K/yr-2.1%14.1% conv. - **galaxy s21 screen protector**43K/yr-3.5%16.1% conv. - **samsung s21 screen protector**39K/yr+7.3%12.9% conv. - **samsung galaxy s21 screen protector**32K/yr+0.7%12.7% conv. - **galaxy s21 5g screen protector**17K/yr+25.8%12.9% conv. - **samsung galaxy s21 5g screen protector**9K/yr+11.8%12.0% conv. - **s21 5g screen protector**9K/yr-5.1%13.5% conv. - **screen protector samsung s21**7K/yr+7.5%10.7% conv. - **screen protector s21**6K/yr-14.0%13.2% conv. - **samsung s21 5g screen protector**5K/yr-11.0%12.1% conv. [**All search terms **](https://flapen.com/research/us/cell-phones-accessories/galaxy-s21-screen-protector/search-terms)
## **Top galaxy s21 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%15%$50K30%$99K45%$149K60%$198K1001K10K100K1.0M Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 8 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**NEWC 3 Pack Designed for Samsung Galaxy S21 5G (6.2) Screen Protector Tempered Glass Scratch-Proof Bubble-Free Ultra Resistant (0.26 mm HD Ultra Transparent) 9H Hardness Glass**NEW'C**$7.20**4.5★107,371 rev](https://www.amazon.com/dp/B094P14PNJ) [2![Galaxy S21 Tempered Glass Screen Protector + Camera Lens Protector [ 2 + 2 Pack ][Case Friendly] [Anti-Scratch] [Ultrasonic Fingerprint Unlock] Clear HD Glass Protective Film for Samsung Galaxy S21](https://m.media-amazon.com/images/I/41r8-6U0qOL.jpg)**Galaxy S21 Tempered Glass Screen Protector + Camera Lens Protector \[ 2 + 2 Pack \]\[Case Friendly\] \[Anti-Scratch\] \[Ultrasonic Fingerprint Unlock\] Clear HD Glass Protective Film for Samsung Galaxy S21**BIGFACE**$13.10**4.3★5,556 rev](https://www.amazon.com/dp/B08XQD6XJH) [3**(3 Pack) Supershieldz Designed for Samsung Galaxy S21 5G Tempered Glass Screen Protector Anti Scratch Bubble Free**Supershieldz**$8.35**4.4★31,924 rev](https://www.amazon.com/dp/B08RZCWG5W) [4**Heenjer 2 Pack for Samsung Galaxy S21 5G / SM-g991u Screen Protector Tempered-Glass Micro-curved Edges Case Friendly Bubble Free HD Clear Easy Installation**Heenjer**$4.84**4.4★657 rev](https://www.amazon.com/dp/B0DQNPYSG4) [5**JETech Screen Protector for Samsung Galaxy S21 5G 6.2-Inch Tempered Glass Film with Easy Installation Tool Fingerprint ID Compatible HD Clear 3-Pack**JETech**$7.76**4.5★34,147 rev](https://www.amazon.com/dp/B0CP73JQKL)
**~~View all top sellers →~~**
### **Newest**
by launch date
[**Heenjer 2 Pack for Samsung Galaxy S21 5G / SM-g991u Screen Protector Tempered-Glass Micro-curved Edges Case Friendly Bubble Free HD Clear Easy Installation**Heenjer**$4.84**657 rev1y ago](https://www.amazon.com/dp/B0DQNPYSG4) [![iCsapr 4 Pack Glass Screen Protector Compatible for Samsung Galaxy S21 5G / SM-g991u [9H Hardness]-HD Screen Tempered Glass Scratch Resistant Easy Install [Case Friendly]](https://m.media-amazon.com/images/I/411SgnSLu-L.jpg)**iCsapr 4 Pack Glass Screen Protector Compatible for Samsung Galaxy S21 5G / SM-g991u \[9H Hardness\]-HD Screen Tempered Glass Scratch Resistant Easy Install \[Case Friendly\]**iCsapr**$6.95**1,917 rev1y ago](https://www.amazon.com/dp/B0DLJQ26W2) [**JETech Screen Protector for Samsung Galaxy S21 5G 6.2-Inch Tempered Glass Film with Easy Installation Tool Fingerprint ID Compatible HD Clear 3-Pack**JETech**$7.76**34,147 rev2y ago](https://www.amazon.com/dp/B0CP73JQKL) [**JETech Screen Protector for Samsung Galaxy S21 6.2-Inch with Camera Lens Protector Easy Installation Tool Tempered Glass Film HD Clear 2-Pack Each**JETech**$9.99**27,208 rev3y ago](https://www.amazon.com/dp/B0BM6YCSLK) [**NEWC 3 Pack Designed for Samsung Galaxy S21 5G (6.2) Screen Protector Tempered Glass Scratch-Proof Bubble-Free Ultra Resistant (0.26 mm HD Ultra Transparent) 9H Hardness Glass**NEW'C**$7.20**107,371 rev4y ago](https://www.amazon.com/dp/B094P14PNJ)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[**JETech Screen Protector for Samsung Galaxy S21 5G 6.2-Inch Tempered Glass Film with Easy Installation Tool Fingerprint ID Compatible HD Clear 3-Pack**JETech**$7.76**4.5★**▲ 74%**](https://www.amazon.com/dp/B0CP73JQKL) [![iCsapr 4 Pack Glass Screen Protector Compatible for Samsung Galaxy S21 5G / SM-g991u [9H Hardness]-HD Screen Tempered Glass Scratch Resistant Easy Install [Case Friendly]](https://m.media-amazon.com/images/I/411SgnSLu-L.jpg)**iCsapr 4 Pack Glass Screen Protector Compatible for Samsung Galaxy S21 5G / SM-g991u \[9H Hardness\]-HD Screen Tempered Glass Scratch Resistant Easy Install \[Case Friendly\]**iCsapr**$6.95**4.4★**▲ 68%**](https://www.amazon.com/dp/B0DLJQ26W2) [**Heenjer 2 Pack for Samsung Galaxy S21 5G / SM-g991u Screen Protector Tempered-Glass Micro-curved Edges Case Friendly Bubble Free HD Clear Easy Installation**Heenjer**$4.84**4.4★**▲ 20%**](https://www.amazon.com/dp/B0DQNPYSG4) [![Galaxy S21 Tempered Glass Screen Protector + Camera Lens Protector [ 2 + 2 Pack ][Case Friendly] [Anti-Scratch] [Ultrasonic Fingerprint Unlock] Clear HD Glass Protective Film for Samsung Galaxy S21](https://m.media-amazon.com/images/I/41r8-6U0qOL.jpg)**Galaxy S21 Tempered Glass Screen Protector + Camera Lens Protector \[ 2 + 2 Pack \]\[Case Friendly\] \[Anti-Scratch\] \[Ultrasonic Fingerprint Unlock\] Clear HD Glass Protective Film for Samsung Galaxy S21**BIGFACE**$13.10**4.3★**▲ 17%**](https://www.amazon.com/dp/B08XQD6XJH) [**(3 Pack) Supershieldz Designed for Samsung Galaxy S21 5G Tempered Glass Screen Protector Anti Scratch Bubble Free**Supershieldz**$8.35**4.4★**— 2%**](https://www.amazon.com/dp/B08RZCWG5W)
**~~View all trending →~~**
## **What buyers say about galaxy s21 screen protector**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Size-Overall**19%
*“Fit well”*
**Assembly/Installation**14%
*“Easy to put on”*
**Quality-Overall**14%
*“Great product, just what I needed”*
**Drop/Impact Protection**10%
*“Screen protector”*
**Ease Of Use**8%
*“Easy to understand and use”*
**Value For Money**6%
*“reasonable price”*
**Advertised Vs Actual Product**5%
*“Better than expected”*
**Durability**4%
*“Very Durable”*
**Efficiency**3%
*“Works well”*
**Strength**2%
*“Sturdy, easy to install”*
### **What buyers complain about **
**Size-Overall**30%
*“To small”*
**Durability**11%
*“First one broke during application”*
**Compatibility-Overall**6%
*“Does not fit the S24”*
**Advertised Vs Actual Product**4%
*“False advertising”*
**Functionality-Overall**4%
*“It does not work”*
**Instructions/User Manual/Troubleshooting**4%
*“Also the guide to apply the glass was not what I expected”*
**Ease Of Use**3%
*“It would have been a very difficult job otherwise”*
**Display-Overall**3%
*“Doesn't quite cover the whole screen”*
**Value For Money**2%
*“is not worth it”*
**Quality-Overall**1%
*“The product is just cheap”*
### **Top return reasons **
**Size-Overall**78%
**Compatibility-Overall**9%
**Functionality-Overall**3%
**Advertised Vs Actual Product**3%
**Adhesion/Stickiness**2%
**Length**1%
**Value For Money**1%
**Display-Overall**1%
**Touch Screen**1%
**Defective Material/Parts**1%
## **Common questions**
- **Is galaxy s21 screen protector profitable to sell on Amazon United States?**
- The niche generates $330K/yr across 8 tracked products. 90-day search growth is +1.8%. Flapen's verdict: Skip it (39/100).
- **How competitive is the galaxy s21 screen protector niche?**
- 7 brands and 11 sellers compete. The top 5 products take 87% of clicks and top 5 brands hold 90% of demand.
- **What do buyers complain about in galaxy s21 screen protector?**
- Top complaints mined from reviews: Size-Overall, Durability, Compatibility-Overall. The return rate is 2.7%.
- **When does demand for galaxy s21 screen protector peak?**
- Demand peaks in Jul; the busiest month runs 1.8× the quietest.
- **What does it cost to enter the galaxy s21 screen protector niche?**
- Listings span $4.84–$13.10; the average listing price is $8.51 (sweet spot $15–$100). The average incumbent carries 27,862 reviews — the moat a new listing must climb.
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