---
title: "Galaxy A21 Screen Protector — $12K/yr Amazon US Niche (2026) - Flapen"
canonical_url: "https://flapen.com/research/us/cell-phones-accessories/galaxy-a21-screen-protector"
last_updated: "2026-08-09T14:02:44.239Z"
locale: en
meta:
description: "Niche score 32/100 · $12K/yr market · 7K searches/yr · $8.40 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:description": "Niche score 32/100 · $12K/yr market · 7K searches/yr · $8.40 avg price. Doesn't clear our bar today. Data updated Jul 2026."
"og:title": "Galaxy A21 Screen Protector — $12K/yr Amazon US Niche (2026) - Flapen"
---
# **galaxy a21 screen protector**
**Skip it**
Prices mostly outside the sweet spot ($5.12–$10.20) — this niche doesn't clear our bar today.
Market size 3Growth 10Conversion 100Competition 13Returns 65Price range 0Avg price 23Brand share 31Review moat 44Quality gap 53
**Conversion**
**Incredible****19.6%**
search→purchase rate — share of searches ending in a sale
**Returns**
**Good****2.4%**
return rate — above 5% kills the launch gate
**Quality gap**
**Good****4.4★**
avg incumbent rating — lower means beatable quality
**Review moat**
**Okay****2,072.9**
avg incumbent reviews — the moat a new listing must climb
**Brand share**
**Okay****86%**
top-5 brand share — brands hold most of the demand
**Avg price**
**Bad****$8.40**
avg listing price — sweet spot $15–$100
**Competition**
**Bad****84%**
top-5 click share — a locked-up shelf
**Growth**
**Bad****-29.6%**
90-day search growth — must beat 0% to launch
**Market size**
**Bad****$12K**
$12K/yr · 7K searches
**Price range**
**Bad****$5.12–$10.20**
cheapest to priciest tracked listing — scored on the share inside $15–$100
According to Flapen's Amazon United States niche tracking, galaxy a21 screen protector is a $12K/yr Amazon United States market (7K searches/yr). The top 5 brands hold 86% of demand. Demand peaks in Jul–Aug. Verdict: Skip it — 32/100.
Data updated Jul 6, 2026 · scored weekly · [~~How we score niches ~~](https://flapen.com/research/methodology)
## **galaxy a21 screen protector market data**
- **Units sold / yr**
- **1K–2K**
- avg 0–100/product
- **Revenue / yr**
- **$11K–$13K**
- units × avg price
- **Conversion rate**
- **19.6%**
- **Avg BSR**
- **#4,954**
- **Page quality**
- **0%**
- **Prime**
- **100%**
- **Sponsored**
- **60%**
- **Out of stock**
- **31.6%**
- **Avg brand age**
- **59 months**
- **Avg seller age**
- **249 days**
## **Competition & brand share**
The top 5 products capture 84% of clicks — a locked-up shelf that new listings rarely crack.
**Brands**
**9 **▼falling
**Sellers**
**10**
**Top-5 brand share**
**86%**
Top 20: 100%
**Top-5 click share**
**84%**
Top 20: 100%
**Open market**
**9%**
- Supershieldz35% - JxVrennzik15% - HPTech15% - beukei11% - VIESUP10% - LYWHL5% - Open — no brand owns it (3 brands, 9%)
## **Demand & seasonality**
Weekly Amazon search volume, last 101 weeks — -29.6% search growth over the last 90 days.
400300Spike '25Spike '26 seasonDecMarJunAugNovMarMay
Peak months: Jul, Aug · busiest ÷ quietest = 2.2×
[**Open Trend **](https://flapen.com/research/us/cell-phones-accessories/galaxy-a21-screen-protector/trend)
## **Top galaxy a21 screen protector search terms**
- **galaxy a21 screen protector**2K/yr-34.1%20.8% conv. - **samsung a21 screen protector**2K/yr-32.6%15.0% conv. - **samsung galaxy a21 screen protector**2K/yr-21.4%18.4% conv. - **a21 screen protector**844/yr-28.2%22.3% conv. [**All search terms **](https://flapen.com/research/us/cell-phones-accessories/galaxy-a21-screen-protector/search-terms)
## **Top galaxy a21 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%$1K20%$2K30%$3K40%$5K1101001K10K Reviews — right = deep review moatMarket share (90d) ≈ est. sales
Beatable (≤4.3★) Contested Strong incumbent (>4.7★)
All 10 tracked products in this niche — three views at once, no toggling.
### **Top sellers**
by 90-day click share
[1**Supershieldz (2 Pack) Designed for Samsung Galaxy A21 Tempered Glass Screen Protector Anti Scratch Bubble Free**Supershieldz**$7.10**4.6★6,285 rev](https://www.amazon.com/dp/B085Q3S74B) [2![JxVrennzik [4 Pack] Tempered Glass Screen Protector for Samsung Galaxy A21](https://m.media-amazon.com/images/I/41YbMUxxSYL.jpg)**JxVrennzik \[4 Pack\] Tempered Glass Screen Protector for Samsung Galaxy A21**JxVrennzik**$9.45**4.5★2 rev](https://www.amazon.com/dp/B0FSXSRNYJ) [3**HPTech (2 Pack) Designed For Samsung Galaxy A21 Tempered Glass Screen Protector Easy to Install Anti Scratch Bubble Free Case Friendly**HPTech**$5.12**4.4★922 rev](https://www.amazon.com/dp/B0928DBX4W) [4**beukei (4 Pack) for Samsung Galaxy A21 Screen Protector Tempered Glass Anti Scratch Bubble Free**beukei**$7.13**4.6★353 rev](https://www.amazon.com/dp/B08816ZJ8W) [5![VIESUP for Samsung Galaxy A21 Screen Protector Tempered Glass 9H Hardness HD Anti-Scratch Screen Protector Protective Film for Galaxy A21 [2-Pack]](https://m.media-amazon.com/images/I/41OtGQMMCrL.jpg)**VIESUP for Samsung Galaxy A21 Screen Protector Tempered Glass 9H Hardness HD Anti-Scratch Screen Protector Protective Film for Galaxy A21 \[2-Pack\]**VIESUP**$10.20**4.4★51 rev](https://www.amazon.com/dp/B08DHN3WZ2)
**~~View all top sellers →~~**
### **Newest**
by launch date
[![JxVrennzik [4 Pack] Tempered Glass Screen Protector for Samsung Galaxy A21](https://m.media-amazon.com/images/I/41YbMUxxSYL.jpg)**JxVrennzik \[4 Pack\] Tempered Glass Screen Protector for Samsung Galaxy A21**JxVrennzik**$9.45**2 rev9mo ago](https://www.amazon.com/dp/B0FSXSRNYJ) [![Anvzle for Samsung Galaxy A21 Case with [2 Pack] Tempered Glass Screen Protector for Galaxy A21 Heavy Duty Armor [Military-Grade] Protective with Magnetic Ring Stand Phone Case Black](https://m.media-amazon.com/images/I/41Rw6L5XY+L.jpg)**Anvzle for Samsung Galaxy A21 Case with \[2 Pack\] Tempered Glass Screen Protector for Galaxy A21 Heavy Duty Armor \[Military-Grade\] Protective with Magnetic Ring Stand Phone Case Black**Anvzle**$8.68**53 rev1y ago](https://www.amazon.com/dp/B0DQD2P13B) [**HPTech (2 Pack) Designed For Samsung Galaxy A21 Tempered Glass Screen Protector Easy to Install Anti Scratch Bubble Free Case Friendly**HPTech**$5.12**922 rev5y ago](https://www.amazon.com/dp/B0928DBX4W) [![YEBF Galaxy A21 HD Clear Tempered Glass Screen Protector + Camera Lens Protectors by YEYEBF [2+2 Pack] [3D Glass] [Anti-Glare] [Bubble-Free] Screen Protector Glass for Samsung Galaxy A21](https://m.media-amazon.com/images/I/41dzP8At+uL.jpg)**YEBF Galaxy A21 HD Clear Tempered Glass Screen Protector + Camera Lens Protectors by YEYEBF \[2+2 Pack\] \[3D Glass\] \[Anti-Glare\] \[Bubble-Free\] Screen Protector Glass for Samsung Galaxy A21**YEYEBF**$9.03**6,098 rev5y ago](https://www.amazon.com/dp/B08VNM1PWK) [![VIESUP for Samsung Galaxy A21 Screen Protector Tempered Glass 9H Hardness HD Anti-Scratch Screen Protector Protective Film for Galaxy A21 [2-Pack]](https://m.media-amazon.com/images/I/41OtGQMMCrL.jpg)**VIESUP for Samsung Galaxy A21 Screen Protector Tempered Glass 9H Hardness HD Anti-Scratch Screen Protector Protective Film for Galaxy A21 \[2-Pack\]**VIESUP**$10.20**51 rev5y ago](https://www.amazon.com/dp/B08DHN3WZ2)
**~~View all new products →~~**
### **Trending**
90-day click momentum
[![JxVrennzik [4 Pack] Tempered Glass Screen Protector for Samsung Galaxy A21](https://m.media-amazon.com/images/I/41YbMUxxSYL.jpg)**JxVrennzik \[4 Pack\] Tempered Glass Screen Protector for Samsung Galaxy A21**JxVrennzik**$9.45**4.5★**▲ 88%**](https://www.amazon.com/dp/B0FSXSRNYJ) [![VIESUP for Samsung Galaxy A21 Screen Protector Tempered Glass 9H Hardness HD Anti-Scratch Screen Protector Protective Film for Galaxy A21 [2-Pack]](https://m.media-amazon.com/images/I/41OtGQMMCrL.jpg)**VIESUP for Samsung Galaxy A21 Screen Protector Tempered Glass 9H Hardness HD Anti-Scratch Screen Protector Protective Film for Galaxy A21 \[2-Pack\]**VIESUP**$10.20**4.4★**▲ 66%**](https://www.amazon.com/dp/B08DHN3WZ2) [**HPTech (2 Pack) Designed For Samsung Galaxy A21 Tempered Glass Screen Protector Easy to Install Anti Scratch Bubble Free Case Friendly**HPTech**$5.12**4.4★**▲ 47%**](https://www.amazon.com/dp/B0928DBX4W) [![YEBF Galaxy A21 HD Clear Tempered Glass Screen Protector + Camera Lens Protectors by YEYEBF [2+2 Pack] [3D Glass] [Anti-Glare] [Bubble-Free] Screen Protector Glass for Samsung Galaxy A21](https://m.media-amazon.com/images/I/41dzP8At+uL.jpg)**YEBF Galaxy A21 HD Clear Tempered Glass Screen Protector + Camera Lens Protectors by YEYEBF \[2+2 Pack\] \[3D Glass\] \[Anti-Glare\] \[Bubble-Free\] Screen Protector Glass for Samsung Galaxy A21**YEYEBF**$9.03**4.4★**— 0%**](https://www.amazon.com/dp/B08VNM1PWK) [**beukei (4 Pack) for Samsung Galaxy A21 Screen Protector Tempered Glass Anti Scratch Bubble Free**beukei**$7.13**4.6★**— 2%**](https://www.amazon.com/dp/B08816ZJ8W)
**~~View all trending →~~**
## **What buyers say about galaxy a21 screen protector**
What buyers praise and complain about, mined from review topics.
### **What buyers love **
**Quality-Overall**19%
*“Very good product”*
**Size-Overall**15%
*“Perfect fit”*
**Drop/Impact Protection**14%
*“Prevents scratch's”*
**Ease Of Use**14%
*“ease of use”*
**Compatibility-Overall**14%
*“It stated compatible”*
**Value For Money**8%
*“the price was right”*
**Durability**7%
*“durable”*
**Assembly/Installation**4%
*“Easy to install”*
**Advertised Vs Actual Product**4%
*“Just as described”*
### **What buyers complain about **
**Quality-Overall**50%
*“Junk”*
**Size-Overall**25%
*“Fitting Issue”*
**Compatibility-Overall**25%
*“It did not fit my Galaxy Flip 7”*
### **Top return reasons **
**Size-Overall**75%
**Compatibility-Overall**13%
**Adhesion/Stickiness**4%
**Advertised Vs Actual Product**3%
**Drop/Impact Protection**2%
**Functionality-Overall**2%
**Length**2%
**Strength**1%
**Touch Screen**1%
## **Common questions**
- **Is galaxy a21 screen protector profitable to sell on Amazon United States?**
- The niche generates $12K/yr across 10 tracked products. 0 of 1 products launched in the last 360 days are still selling. 90-day search growth is -29.6%. Flapen's verdict: Skip it (32/100).
- **How competitive is the galaxy a21 screen protector niche?**
- 9 brands and 10 sellers compete. The top 5 products take 84% of clicks and top 5 brands hold 86% of demand.
- **What do buyers complain about in galaxy a21 screen protector?**
- Top complaints mined from reviews: Quality-Overall, Size-Overall, Compatibility-Overall. The return rate is 2.4%.
- **When does demand for galaxy a21 screen protector peak?**
- Demand peaks in Jul–Aug; the busiest month runs 2.2× the quietest.
- **What does it cost to enter the galaxy a21 screen protector niche?**
- Listings span $5.12–$10.20; the average listing price is $8.40 (sweet spot $15–$100). The average incumbent carries 2,073 reviews — the moat a new listing must climb.
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