OVERALL
ALTERNATIVES
SPECS
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REVIEWS
Scored using Wi-Fi extenders Methodology v1.0
Wi-Fi extenders Methodology v1.0
Mathematical & Unbiased Scoring
Products in this category are evaluated mathematically under Frontumo Wi-Fi extenders Methodology v1.0 using verified laboratory benchmarks, technical specifications, and authentic consumer ratings with 0% commercial bias.
Explore Wi-Fi extenders Methodology v1.0

Tenda A21 Review | 63 Data compared

Avg. price:~£35Wi-Fi version:Wi-Fi 5 (802.11ac)Wi-Fi speed:2034 MbpsCoverage area:279 m²

Tenda A21 Review: Compare 63 technical specifications and user reviews to see how this product ranks in the Wi-Fi extenders category and whether it is worth buying.

6.3

Overall score

Score
6.3/ 10
✕
What it is
An overall evaluation of the Wi-Fi extender's quality, based on technical analyses and user reviews.
When it matters
When you need a quick reference to spot the best Wi‑Fi extenders overall.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 73% of models
Score components

80%

6.0

Technical score

20%

7.4

User score

â–¼Worse than 73% of wi-fi-extenders
6.0

Technical score

Technical score
6.0/ 10
✕
What it is
An assessment of technical performance for products in the Wi-Fi extenders category across these key areas: Wi-Fi Performance, Network & Security, Ports, Setup & Management, Hardware & Deployment.
When it matters
When you want to compare Wi‑Fi extenders based on speed, coverage, ports, and wireless features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 72% of models
Score components

40%

5.7

Wi-Fi Performance

30%

4.6

Network & Security

12%

8.7

Setup & Management

10%

6.3

Hardware & Deployment

8%

7.8

Ports

â–¼Worse than 72% of wi-fi-extenders
7.4

User score

User score
7.4/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the Wi-Fi extender.
When it matters
When you want to know how a Wi‑Fi extender performs in daily use and how reliably it maintains a stable connection over time according to user feedback.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 82% of models
Score components

70%

8.2

User ratings

30%

5.6

Number of reviews

Based on 195 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
â–¼Worse than 82% of wi-fi-extenders
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Best prices

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Best rankings

Available: ranking among products currently available (including other versions of this product).All: ranking among all products in the database.
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Technical Specifications of Wi-Fi extender Tenda A21

Technical score
Technical score
6.0/ 10
✕
What it is
An assessment of technical performance for products in the Wi-Fi extenders category across these key areas: Wi-Fi Performance, Network & Security, Ports, Setup & Management, Hardware & Deployment.
When it matters
When you want to compare Wi‑Fi extenders based on speed, coverage, ports, and wireless features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 72% of models
Score components:

40%

5.7

Wi-Fi Performance

30%

4.6

Network & Security

12%

8.7

Setup & Management

10%

6.3

Hardware & Deployment

8%

7.8

Ports

6.0
User score
User score
7.4/ 10
✕
What it is
A rating that combines user reviews and the total number of reviews received by the Wi-Fi extender.
When it matters
When you want to know how a Wi‑Fi extender performs in daily use and how reliably it maintains a stable connection over time according to user feedback.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 82% of models
Score components

70%

8.2

User ratings

30%

5.6

Number of reviews

Based on 195 buyer reviews from online shops.
Read buyer reviews on Amazon →
How we calculate this
User ratings – average star rating across all shop listings, weighted by how many reviews each has, on a 1–10 scale.
Number of reviews – how many buyer reviews the product has, on a logarithmic scale; the 8% most-reviewed models in the category get 10.
7.4
Popularity
Popularity
5.6/ 10
✕
What it is
An indicator based on the number of reviews received by the Wi-Fi extender.
When it matters
When you prefer to buy a Wi‑Fi extender that has already been chosen and reviewed by many other users.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 58% of models
Popularity:
Tenda A21 has a popularity score of 5.6 points, which is lower than 56.9% of Wi-Fi extenders.
5.6
Value for money
Value for money
7.4/ 10
✕
What it is
An indicator that combines the Wi-Fi extender's overall rating with its cost.
When it matters
When you are looking for a Wi‑Fi extender with a good balance between performance and price.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 73% of models
Score components:

60%

6.3

Overall score

40%

10

Price

7.4
Wi-Fi version
Wi-Fi 5 (802.11ac)
Wi-Fi version
Wi-Fi 5 (802.11ac)
â–¼ Worse than 46% of models
This wi-fi extender supports Wi-Fi 5 (802.11ac), more advanced than 9.8% of Wi-Fi extenders and equal to 44.1% of Wi-Fi extenders.
Wi-Fi bands
Dual-band
Wi-Fi bands
Dual-band
â–¼ Worse than 15% of models
This wi-fi extender supports Dual-band, more versatile than 10.8% of Wi-Fi extenders and equal to 74.5% of Wi-Fi extenders.
6 GHz band support
no
6 GHz band support
no
â–¼ Worse than 6% of models
This wi-fi extender does not support the 6 GHz band. 5.9% of Wi-Fi extenders support the 6 GHz band.
Wi-Fi speed
2034 Mbps
Wi-Fi speed
2034 Mbps
â–² Better than 67% of models
Market range: <733 Mbps – >5.4k Mbps
This wi-fi extender reaches 2034 Mbps Wi-Fi speed, faster than 66.7% of Wi-Fi extenders.
Max speed 2.4 GHz
300 Mbps
Max speed 2.4 GHz
300 Mbps
â–¼ Worse than 62% of models
Market range: <300 Mbps – >600 Mbps
This wi-fi extender reaches 300 Mbps on 2.4 GHz, slower than 61.8% of Wi-Fi extenders and equal to 36.3% of Wi-Fi extenders.
Show more
Ethernet backhaul
no
Ethernet backhaul
no
â–¼ Worse than 52% of models
This wi-fi extender does not support Ethernet backhaul. 51.6% of Wi-Fi extenders support Ethernet backhaul.
Mesh compatibility
Wi-Fi+
Mesh standard
proprietary mesh
Roaming feature
no
Roaming feature
no
â–¼ Worse than 83% of models
This wi-fi extender does not support roaming. 83.3% of Wi-Fi extenders support roaming.
802.11k support
yes
802.11k support
yes
â–² Better than 24% of models
This wi-fi extender supports 802.11k. 24% of Wi-Fi extenders support 802.11k.
Show more
N. of LAN ports
1
N. of LAN ports
1
â–¼ Worse than 16% of models
Market range: <1 – >2
This wi-fi extender has 1 LAN port/s, more than 9.8% of Wi-Fi extenders and equal to 74.5% of Wi-Fi extenders.
Ethernet port speed
1 Gbps
Ethernet port speed
1 Gbps
â–² Better than 25% of models
Market range: <0.1 Gbps – >2.5 Gbps
This wi-fi extender offers 1 Gbps Ethernet speed, faster than 25.5% of Wi-Fi extenders and equal to 63.7% of Wi-Fi extenders.
N. of USB ports
0
N. of USB ports
0
â–¼ Worse than 3% of models
Market range: <0 – >0
This wi-fi extender has 0 USB port/s, fewer than 2.9% of Wi-Fi extenders and equal to 97.1% of Wi-Fi extenders.
PoE standard
N/A
Dedicated smartphone app
yes
Dedicated smartphone app
yes
â–² Better than 16% of models
This wi-fi extender comes with a dedicated smartphone app. 15.7% of Wi-Fi extenders come with a dedicated smartphone app.
Web UI management
yes
Web UI management
yes
â–² Better than 2% of models
This wi-fi extender has a web management interface. 2% of Wi-Fi extenders have a web management interface.
Web UI at re.tenda.cn.
Automatic firmware updates
no
Automatic firmware updates
no
â–¼ Worse than 46% of models
This wi-fi extender does not have automatic firmware updates. 46.1% of Wi-Fi extenders have automatic firmware updates.
LED control
yes
LED control
yes
â–² Better than 15% of models
This wi-fi extender has LED control. 14.7% of Wi-Fi extenders have LED control.
Buttons present
wps, reset
Show more
Mounting type
wall-plug
Portable design
yes
Portable design
yes
â–² Better than 34% of models
This wi-fi extender has a portable design. 34.3% of Wi-Fi extenders have a portable design.
Height
56.2 mm
Height
56.2 mm
â–² Better than 80% of models
Market range: <38 mm – >190 mm
This wi-fi extender is 56.2 mm tall, shorter than 80.4% of Wi-Fi extenders.
Width
78 mm
Width
78 mm
â–² Better than 56% of models
Market range: <61.5 mm – >170 mm
This wi-fi extender is 78 mm wide, narrower than 55.9% of Wi-Fi extenders and equal to 2% of Wi-Fi extenders.
Thickness
56.2 mm
Thickness
56.2 mm
â–¼ Worse than 73% of models
Market range: <34 mm – >76.2 mm
This wi-fi extender is 56.2 mm thick, thicker than 72.6% of Wi-Fi extenders.
Show more

Tenda A21 vs the average Wi-Fi extender

246810TotalWi-Fi PerformanceNetwork & SecurityPortsSetup & ManagementHardware & Deployment
  • 86% larger coverage area
    Coverage area
    279 m²
    ★ Better than 93% of models
    Market range: <93 m² – >260 m²
    This wi-fi extender covers a larger area than the average Wi-Fi extender (279 m² vs 150 m²). The average Wi-Fi extender covers 150 m².
    279 m² vs 150 m²
  • 2 more antennas
    Wi-Fi speed
    4 Mbps
    â–² Better than 67% of models
    Market range: <733 Mbps – >5.4k Mbps
    This wi-fi extender has more antennas than the average Wi-Fi extender (4 vs 2). The average Wi-Fi extender has 2 antennas.
    4 vs 2
  • 14.6% faster Wi-Fi speed
    Wi-Fi speed
    2034 Mbps
    â–² Better than 67% of models
    Market range: <733 Mbps – >5.4k Mbps
    This wi-fi extender reaches faster Wi-Fi speed than the average Wi-Fi extender (2034 Mbps vs 1775 Mbps). The average Wi-Fi extender reaches 1775 Mbps Wi-Fi speed.
    2,034 Mbps vs 1,775 Mbps
  • 4 more spatial streams
    Spatial streams per band
    6
    ★ Better than 94% of models
    Market range: <2 – >4
    This wi-fi extender has more spatial streams per band than the average Wi-Fi extender (6 vs 2). The average Wi-Fi extender has 2 spatial streams per band.
    band breakdown: 4 + 2 spatial streams.
    6 vs 2
  • 65.8 mm lower height
    Height
    56.2 mm
    â–² Better than 80% of models
    Market range: <38 mm – >190 mm
    This wi-fi extender is shorter than the average Wi-Fi extender (56.2 mm vs 122 mm). The average Wi-Fi extender has a height of 122 mm.
    56.2 mm vs 122 mm
  • 2x cheaper
    Tenda A21 is cheaper than the average Wi-Fi extender (£35 vs £70).
    £35 vs £70
  • 2x cheaper
    Tenda A21 is cheaper than the average Wi-Fi extender (£35 vs £70).
    £35 vs £70
  • 86% larger coverage area
    Coverage area
    279 m²
    ★ Better than 93% of models
    Market range: <93 m² – >260 m²
    This wi-fi extender covers a larger area than the average Wi-Fi extender (279 m² vs 150 m²). The average Wi-Fi extender covers 150 m².
    279 m² vs 150 m²
  • 2 more antennas
    Wi-Fi speed
    4 Mbps
    â–² Better than 67% of models
    Market range: <733 Mbps – >5.4k Mbps
    This wi-fi extender has more antennas than the average Wi-Fi extender (4 vs 2). The average Wi-Fi extender has 2 antennas.
    4 vs 2
  • 14.6% faster Wi-Fi speed
    Wi-Fi speed
    2034 Mbps
    â–² Better than 67% of models
    Market range: <733 Mbps – >5.4k Mbps
    This wi-fi extender reaches faster Wi-Fi speed than the average Wi-Fi extender (2034 Mbps vs 1775 Mbps). The average Wi-Fi extender reaches 1775 Mbps Wi-Fi speed.
    2,034 Mbps vs 1,775 Mbps
  • 4 more spatial streams
    Spatial streams per band
    6
    ★ Better than 94% of models
    Market range: <2 – >4
    This wi-fi extender has more spatial streams per band than the average Wi-Fi extender (6 vs 2). The average Wi-Fi extender has 2 spatial streams per band.
    band breakdown: 4 + 2 spatial streams.
    6 vs 2
  • 65.8 mm lower height
    Height
    56.2 mm
    â–² Better than 80% of models
    Market range: <38 mm – >190 mm
    This wi-fi extender is shorter than the average Wi-Fi extender (56.2 mm vs 122 mm). The average Wi-Fi extender has a height of 122 mm.
    56.2 mm vs 122 mm
  • No Ethernet backhaul
    Ethernet backhaul
    no
    â–¼ Worse than 52% of models
    This wi-fi extender does not support Ethernet backhaul, while the average Wi-Fi extender does. 51.1% of Wi-Fi extenders support Ethernet backhaul.
  • No Mesh Wi-Fi support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support mesh Wi-Fi, while the average Wi-Fi extender does. 65% of Wi-Fi extenders support mesh Wi-Fi.
  • No WPA3 support
    WPA3 support
    no
    â–¼ Worse than 57% of models
    This wi-fi extender does not support WPA3, while the average Wi-Fi extender does. 56.7% of Wi-Fi extenders support WPA3.
  • No roaming support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support roaming, while the average Wi-Fi extender does. 82.5% of Wi-Fi extenders support roaming.
  • No 802.11r support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support 802.11r, while the average Wi-Fi extender does. 57.3% of Wi-Fi extenders support 802.11r.
  • 150 Mbps slower 2.4 GHz speed
    Max speed 2.4 GHz
    300 Mbps
    â–¼ Worse than 62% of models
    Market range: <300 Mbps – >600 Mbps
    This wi-fi extender reaches a slower 2.4 GHz speed than the average Wi-Fi extender (300 Mbps vs 450 Mbps). The average Wi-Fi extender reaches 450 Mbps on 2.4 GHz.
    300 Mbps vs 450 Mbps
  • 1 dBi lower antenna gain
    Antenna gain
    3 dBi
    â–¼ Worse than 68% of models
    Market range: <2 dBi – >5.97 dBi
    This wi-fi extender has lower antenna gain than the average Wi-Fi extender (3 dBi vs 4 dBi). The average Wi-Fi extender has 4 dBi antenna gain.
    3 dBi vs 4 dBi
  • 1.5 W higher power consumption
    Operating power consumption
    11 W
    â–¼ Worse than 66% of models
    Market range: <3.57 W – >15.2 W
    This wi-fi extender uses more power than the average Wi-Fi extender (11 W vs 9.5 W). The average Wi-Fi extender uses 9.5 W of power.
    11 W vs 9.5 W
  • 8.4% lower user score
    User score
    7.4/ 10
    ✕
    What it is
    A rating that combines user reviews and the total number of reviews received by the Wi-Fi extender.
    When it matters
    When you want to know how a Wi‑Fi extender performs in daily use and how reliably it maintains a stable connection over time according to user feedback.
    Score distribution
    ▼▼
    <55-66-77-88-99-10
    Tenda A21
    the average Wi-Fi extender
    Tenda A21 has a lower user score than the average Wi-Fi extender (7.38 vs 8.000).
    7.38 vs 8
  • 9.1% worse value for money
    Tenda A21 has a lower value-for-money score than the average Wi-Fi extender (7.38 vs 8.1).
    7.38 vs 8.05
  • No Mesh Wi-Fi support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support mesh Wi-Fi, while the average Wi-Fi extender does. 65% of Wi-Fi extenders support mesh Wi-Fi.
  • 150 Mbps slower 2.4 GHz speed
    Max speed 2.4 GHz
    300 Mbps
    â–¼ Worse than 62% of models
    Market range: <300 Mbps – >600 Mbps
    This wi-fi extender reaches a slower 2.4 GHz speed than the average Wi-Fi extender (300 Mbps vs 450 Mbps). The average Wi-Fi extender reaches 450 Mbps on 2.4 GHz.
    300 Mbps vs 450 Mbps
  • 1 dBi lower antenna gain
    Antenna gain
    3 dBi
    â–¼ Worse than 68% of models
    Market range: <2 dBi – >5.97 dBi
    This wi-fi extender has lower antenna gain than the average Wi-Fi extender (3 dBi vs 4 dBi). The average Wi-Fi extender has 4 dBi antenna gain.
    3 dBi vs 4 dBi
  • No Ethernet backhaul
    Ethernet backhaul
    no
    â–¼ Worse than 52% of models
    This wi-fi extender does not support Ethernet backhaul, while the average Wi-Fi extender does. 51.1% of Wi-Fi extenders support Ethernet backhaul.
  • No WPA3 support
    WPA3 support
    no
    â–¼ Worse than 57% of models
    This wi-fi extender does not support WPA3, while the average Wi-Fi extender does. 56.7% of Wi-Fi extenders support WPA3.
  • No roaming support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support roaming, while the average Wi-Fi extender does. 82.5% of Wi-Fi extenders support roaming.
  • No 802.11r support
    Mesh Wi-Fi support
    no
    â–¼ Worse than 66% of models
    This wi-fi extender does not support 802.11r, while the average Wi-Fi extender does. 57.3% of Wi-Fi extenders support 802.11r.
  • 1.5 W higher power consumption
    Operating power consumption
    11 W
    â–¼ Worse than 66% of models
    Market range: <3.57 W – >15.2 W
    This wi-fi extender uses more power than the average Wi-Fi extender (11 W vs 9.5 W). The average Wi-Fi extender uses 9.5 W of power.
    11 W vs 9.5 W
  • 10.2 mm thicker
    Thickness
    56.2 mm
    â–¼ Worse than 73% of models
    Market range: <34 mm – >76.2 mm
    This wi-fi extender is thicker than the average Wi-Fi extender (56.2 mm vs 46 mm). The average Wi-Fi extender has a thickness of 46 mm.
    56.2 mm vs 46 mm

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Third-party reviews

Based on 195 buyer reviews from online shops.
Reviews last updated: June 2026 · How we calculate this
Read buyer reviews on Amazon →

What we like about Tenda A21

  • Significantly improves speeds over older N300 extenders, especially on the 5GHz band
  • Extremely easy one-touch setup using the WPS button
  • Budget-friendly price point for AC2100 performance
  • Intelligent LED indicator helps find the perfect placement easily
  • Gigabit Ethernet port provides reliable wired connections for consoles and TVs
  • Good coverage for small to medium-sized apartments/homes

What we don't like about Tenda A21

  • Speeds can be cut in half compared to the main router due to standard extender technology
  • The 2.4GHz band performance is often reported as average or similar to older models
  • Relatively large physical size compared to more compact AC1200 extenders
  • Higher power consumption (11W) than some competing budget models
  • Occasional reports of difficulty with initial configuration for some users

Verdict

The Tenda A21 is a high-performance AC2100 dual-band Wi-Fi range extender featuring four external 3dBi omni-directional antennas to deliver coverage up to 3,000 sq. ft. and support for over 30 devices simultaneously. It leverages 4x4 MU-MIMO technology to achieve concurrent transmission speeds of up to 1734Mbps on the 5GHz band and 300Mbps on the 2.4GHz band, significantly outperforming standard AC1750 and AC1900 repeaters. Key pros include its easy one-touch WPS setup, a versatile Gigabit Ethernet port that supports both Access Point (AP) mode and wired client connections, and an intelligent LED signal indicator for optimal placement. However, some users note that while it enhances range, it may inherently reduce peak throughput speeds compared to a dedicated mesh system or wired connection, and it lack support for the latest Wi-Fi 6 standards.

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