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Tenda A21 Review | 63 Data compared

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

Tenda A21 review. Compare 63 technical specifications and user reviews to see how it ranks among wi-fi extenders and if it is worth buying.

6.5

Overall score

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 components:

80.0%

6.2

Technical Score

20.0%

7.5

User score

Good
6.2

Technical Score

What it is: An assessment of the Wi-Fi extender's technical performance, covering eight key areas: speed, coverage, signal stability, connectivity, Ethernet features, mesh support, ease of setup, and design.

When it matters: When you want to compare Wi‑Fi extenders based on speed, coverage, ports, and wireless features.

Score components:

40.0%

5.7

Wi-Fi Performance

30.0%

4.7

Network & Security

12.0%

8.7

Setup & Management

10.0%

6.6

Hardware & Deployment

8.0%

10

Ports

Good
7.5

User score

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 components:

70.0%

8.2

User reviews

30.0%

5.9

Popularity

User score:
United Kingdom
amazon
4.1
(173)
amazon
3.7
(6)
United States
Amazon_logo.png
4.0
(16)

(Reviews last updated: June 2026)

Very good
  • 7.1
    Gaming

    Score components:

    35.0%

    6.8

    Wi-Fi speed

    30.0%

    10

    QoS support

    20.0%

    1.0

    Ethernet backhaul

    15.0%

    10

    N. of LAN ports

  • 8.9
    Travel

    Score components:

    45.0%

    8.7

    Weight

    30.0%

    10

    Portable design

    15.0%

    6.8

    Wi-Fi speed

    10.0%

    10

    Access Point mode

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Best prices in UK

Best rankings

?

Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

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.

Technical Specifications of Tenda A21

Technical Score

What it is: An assessment of the Wi-Fi extender's technical performance, covering eight key areas: speed, coverage, signal stability, connectivity, Ethernet features, mesh support, ease of setup, and design.

When it matters: When you want to compare Wi‑Fi extenders based on speed, coverage, ports, and wireless features.

Score components:

40.0%

5.7

Wi-Fi Performance

30.0%

4.7

Network & Security

12.0%

8.7

Setup & Management

10.0%

6.6

Hardware & Deployment

8.0%

10

Ports

6.2
Tenda A21 has a technical score of 6.2 points, which is lower than 71.6% of Wi-Fi extenders.
User score

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 components:

70.0%

8.2

User reviews

30.0%

5.9

Popularity

User score:
United Kingdom
amazon
4.1
(173)
amazon
3.7
(6)
United States
Amazon_logo.png
4.0
(16)

(Reviews last updated: June 2026)

7.5
Tenda A21 has a user score of 7.47 points, which is lower than 86.3% of Wi-Fi extenders.
Popularity
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.
5.9
Tenda A21 has a popularity of 5.9 points, which is lower than 57.8% of products in this category.
Ratio quality/price

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 components:

60.0%

6.5

Overall score

40.0%

10

Price

7.5
Tenda A21 has a quality-to-price ratio of 7.5 points, which is lower than 71.6% of products in this category.
Wi-Fi version
What it is: The Wi‑Fi generation the extender supports, such as Wi‑Fi 5, Wi‑Fi 6, or Wi‑Fi 6E.
When it matters: When you want the extender to work well with newer routers and support modern wireless features.

Importance: HIGH

Wi-Fi 5 (802.11ac)
Tenda A21 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
What it is: The wireless frequency bands the extender can use.
When it matters: When your router and devices depend on support for the right Wi‑Fi bands.

Importance: HIGH

Dual-band
Tenda A21 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
What it is: Whether the extender can operate on the 6 GHz band.
When it matters: When you want the extender to work well with newer routers and support modern wireless features.

Importance: LOW

no
Tenda A21 does not support the 6 GHz band. 5.9% of Wi-Fi extenders support the 6 GHz band.
Wi-Fi speed
What it is: The combined theoretical maximum wireless speed across the supported bands.
When it matters: When you need better speed and signal strength in rooms that are harder to reach.

Importance: HIGH

2034 Mbps
Tenda A21 reaches 2034 Mbps Wi-Fi speed, faster than 66.7% of Wi-Fi extenders.
Max speed 2.4 GHz
What it is: The maximum supported wireless speed on the 2.4 GHz band.
When it matters: When you need better speed and signal strength in rooms that are harder to reach.

Importance: MEDIUM

300 Mbps
Tenda A21 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
What it is: Whether the extender supports Ethernet backhaul through a wired network connection.
When it matters: When you want a more stable link over Ethernet instead of relying only on wireless repeating.

Importance: MEDIUM

no
Tenda A21 does not support Ethernet backhaul. 52.2% of Wi-Fi extenders support Ethernet backhaul.
Mesh compatibility
What it is: The mesh systems or ecosystems the extender can work with.
When it matters: When you want smoother roaming and more consistent coverage across your home.

Importance: LOW

Wi-Fi+
Mesh standard
What it is: The mesh standard or ecosystem the extender uses.
When it matters: When you want smoother roaming and more consistent coverage across your home.

Importance: LOW

proprietary mesh
Roaming feature
What it is: Whether the extender supports seamless roaming between network nodes.
When it matters: When you want smoother roaming and more consistent coverage across your home.

Importance: MEDIUM

no
Tenda A21 does not support roaming. 83.3% of Wi-Fi extenders support roaming.
802.11k support
What it is: Whether the extender supports 802.11k for better roaming information between access points.
When it matters: When you want smoother roaming and more consistent coverage across your home.

Importance: LOW

yes
Tenda A21 supports 802.11k. 27.1% of Wi-Fi extenders support 802.11k.
Show more
N. of LAN ports
What it is: The number of wired LAN ports on the extender.
When it matters: When you need to connect wired devices such as TVs, consoles, PCs, or switches.

Importance: MEDIUM

1
Tenda A21 has 1 LAN port/s, more than 8.1% of Wi-Fi extenders and equal to 76.8% of Wi-Fi extenders.
Ethernet port speed
What it is: The maximum Ethernet speed supported by the wired ports.
When it matters: When you connect wired devices and want them to run at full local network speed.

Importance: MEDIUM

1 Gbps
Tenda A21 offers 1 Gbps Ethernet speed, faster than 25.7% of Wi-Fi extenders and equal to 64.4% of Wi-Fi extenders.
N. of USB ports
What it is: The number of USB ports on the extender.
When it matters: When you need to connect wired devices such as TVs, consoles, PCs, or switches.

Importance: LOW

0
Tenda A21 has 0 USB port/s, equal to 97.1% of Wi-Fi extenders.
PoE standard
What it is: The Power over Ethernet standard the extender supports, if any.
When it matters: When you want to power the extender over Ethernet instead of using a separate power adapter.

Importance: LOW

N/A
Dedicated smartphone app
What it is: Whether the extender can be managed through a dedicated smartphone app.
When it matters: When you want easier setup, monitoring, and control from your phone.

Importance: MEDIUM

yes
Tenda A21 comes with a dedicated smartphone app. 15.2% of Wi-Fi extenders come with a dedicated smartphone app.
Web UI management
What it is: Whether the extender offers a web-based interface for setup and management.
When it matters: When you prefer advanced setup and control from a web browser.

Importance: MEDIUM

yes
Tenda A21 has a web management interface. 2% of Wi-Fi extenders have a web management interface.
Web UI at re.tenda.cn.
Automatic firmware updates
What it is: Whether the extender can install firmware updates automatically.
When it matters: When you want security and stability updates without having to manage them manually.

Importance: LOW

no
Tenda A21 does not have automatic firmware updates. 48% of Wi-Fi extenders have automatic firmware updates.
LED control
What it is: Whether the extender’s LED indicators can be adjusted or turned off.
When it matters: When the extender sits in a bedroom or another space where bright status lights can be annoying.

Importance: LOW

yes
Tenda A21 has LED control. 12.1% of Wi-Fi extenders have LED control.
Buttons present
What it is: The physical buttons available on the extender, such as reset, power, or WPS.
When it matters: When you prefer direct physical controls instead of relying only on software menus.

Importance: LOW

wps, reset
Show more
Mounting type
What it is: The mounting style the extender uses, such as wall-plug or desktop placement.
When it matters: When the extender needs to fit neatly into a tight space, behind furniture, or near an outlet.

Importance: LOW

wall-plug
Portable design
What it is: Whether the extender has a travel-friendly portable design, usually a compact plug-in form factor rather than a larger desktop or fixed-installation unit.
When it matters: When you want an extender that is easy to pack, move between locations, or use temporarily while travelling.

Importance: LOW

yes
Tenda A21 has a portable design. 34.3% of Wi-Fi extenders have a portable design.
Derived from compact plug-in form factor.
Height
What it is: The height of the extender body.
When it matters: When the extender needs to fit neatly into a tight space, behind furniture, or near an outlet.

Importance: LOW

56.2 mm
Tenda A21 is 56.2 mm tall, shorter than 80.4% of Wi-Fi extenders.
Width
What it is: The width of the extender body.
When it matters: When the extender needs to fit neatly into a tight space, behind furniture, or near an outlet.

Importance: LOW

78 mm
Tenda A21 is 78 mm wide, narrower than 55.9% of Wi-Fi extenders and equal to 2% of Wi-Fi extenders.
Thickness
What it is: The depth or thickness of the extender body.
When it matters: When the extender needs to fit neatly into a tight space, behind furniture, or near an outlet.

Importance: LOW

56.2 mm
Tenda A21 is 56.2 mm thick, thicker than 72.6% of Wi-Fi extenders.
Show more

Tenda A21 vs the average wi-fi extender

  • 92.4% larger coverage area
    Tenda A21 covers a larger area than the average wi-fi extender (279 m² vs 145 m²). The average Wi-Fi extender covers 145 m².
    What it is: The estimated area the extender is designed to cover.
    When it matters: When you need better speed and signal strength in rooms that are harder to reach.

    Importance: HIGH

    Tenda A21 covers a larger area than the average wi-fi extender (279 m² vs 145 m²). The average Wi-Fi extender covers 145 m².279 m² vs 145 m²
  • 2 more antennas
    Tenda A21 has more antennas than the average wi-fi extender (4 vs 2). The average Wi-Fi extender has 2 antennas.
    What it is: The number of antennas built into or attached to the extender.
    When it matters: When you need better speed and signal strength in rooms that are harder to reach.

    Importance: LOW

    Tenda A21 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
    Tenda A21 reaches faster Wi-Fi speed than the average wi-fi extender (2,034 Mbps vs 1,775 Mbps). The average Wi-Fi extender reaches 1,775 Mbps Wi-Fi speed.
    What it is: The combined theoretical maximum wireless speed across the supported bands.
    When it matters: When you need better speed and signal strength in rooms that are harder to reach.

    Importance: HIGH

    Tenda A21 reaches faster Wi-Fi speed than the average wi-fi extender (2,034 Mbps vs 1,775 Mbps). The average Wi-Fi extender reaches 1,775 Mbps Wi-Fi speed.2034 Mbps vs 1775 Mbps
  • 4 more spatial streams
    Tenda A21 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.
    What it is: The number of spatial streams supported on each wireless band.
    When it matters: When many phones, laptops, TVs, and smart-home devices are online at the same time.

    Importance: LOW

    Tenda A21 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.6 vs 2
  • 65.8 mm lower height
    Tenda A21 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.
    What it is: The height of the extender body.
    When it matters: When the extender needs to fit neatly into a tight space, behind furniture, or near an outlet.

    Importance: LOW

    Tenda A21 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).
    Tenda A21 is cheaper than the average wi-fi extender (£35 vs £70).£35 vs £70
  • 92.4% larger coverage area
    Tenda A21 covers a larger area than the average wi-fi extender (279 m² vs 145 m²). The average Wi-Fi extender covers 145 m².
  • 2 more antennas
    Tenda A21 has more antennas than the average wi-fi extender (4 vs 2). The average Wi-Fi extender has 2 antennas.
  • 14.6% faster Wi-Fi speed
    Tenda A21 reaches faster Wi-Fi speed than the average wi-fi extender (2,034 Mbps vs 1,775 Mbps). The average Wi-Fi extender reaches 1,775 Mbps Wi-Fi speed.
  • 4 more spatial streams
    Tenda A21 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.
  • 65.8 mm lower height
    Tenda A21 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.

Total
Overall
Wi-Fi Performance
Hardware & Deployment
  • No Mesh Wi-Fi support
    Tenda A21 does not support mesh Wi-Fi, while the average wi-fi extender does. 66.7% of Wi-Fi extenders support mesh Wi-Fi.
  • 150 Mbps slower 2.4 GHz speed
    Tenda A21 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.
  • 1 dBi lower antenna gain
    Tenda A21 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.
  • No Ethernet backhaul
    Tenda A21 does not support Ethernet backhaul, while the average wi-fi extender does. 51.6% of Wi-Fi extenders support Ethernet backhaul.
  • No WPA3 support
    Tenda A21 does not support WPA3, while the average wi-fi extender does. 56.7% of Wi-Fi extenders support WPA3.
  • No roaming support
    Tenda A21 does not support roaming, while the average wi-fi extender does. 82.5% of Wi-Fi extenders support roaming.
  • No 802.11r support
    Tenda A21 does not support 802.11r, while the average wi-fi extender does. 58.3% of Wi-Fi extenders support 802.11r.
  • 1.5 W higher power consumption
    Tenda A21 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.
  • 10.2 mm thicker
    Tenda A21 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.
  • No Ethernet backhaul
    Tenda A21 does not support Ethernet backhaul, while the average wi-fi extender does. 51.6% of Wi-Fi extenders support Ethernet backhaul.
    What it is: Whether the extender supports Ethernet backhaul through a wired network connection.
    When it matters: When you want a more stable link over Ethernet instead of relying only on wireless repeating.

    Importance: MEDIUM

    Tenda A21 does not support Ethernet backhaul, while the average wi-fi extender does. 51.6% of Wi-Fi extenders support Ethernet backhaul.
  • No Mesh Wi-Fi support
    Tenda A21 does not support mesh Wi-Fi, while the average wi-fi extender does. 66.7% of Wi-Fi extenders support mesh Wi-Fi.
    What it is: Whether the extender can join a mesh Wi‑Fi setup for smoother whole-home coverage.
    When it matters: When you want smoother roaming and more consistent coverage across your home.

    Importance: HIGH

    Tenda A21 does not support mesh Wi-Fi, while the average wi-fi extender does. 66.7% of Wi-Fi extenders support mesh Wi-Fi.
  • No WPA3 support
    Tenda A21 does not support WPA3, while the average wi-fi extender does. 56.7% of Wi-Fi extenders support WPA3.
    What it is: Whether the extender supports WPA3 wireless security.
    When it matters: When you want stronger protection for your network and connected devices.

    Importance: MEDIUM

    Tenda A21 does not support WPA3, while the average wi-fi extender does. 56.7% of Wi-Fi extenders support WPA3.
  • No roaming support
    Tenda A21 does not support roaming, while the average wi-fi extender does. 82.5% of Wi-Fi extenders support roaming.
    What it is: Whether the extender supports seamless roaming between network nodes.
    When it matters: When you want smoother roaming and more consistent coverage across your home.

    Importance: MEDIUM

    Tenda A21 does not support roaming, while the average wi-fi extender does. 82.5% of Wi-Fi extenders support roaming.
  • No 802.11r support
    Tenda A21 does not support 802.11r, while the average wi-fi extender does. 58.3% of Wi-Fi extenders support 802.11r.
    What it is: Whether the extender supports 802.11r for faster roaming handoffs.
    When it matters: When you want smoother roaming and more consistent coverage across your home.

    Importance: LOW

    Tenda A21 does not support 802.11r, while the average wi-fi extender does. 58.3% of Wi-Fi extenders support 802.11r.
  • 150 Mbps slower 2.4 GHz speed
    Tenda A21 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.
    What it is: The maximum supported wireless speed on the 2.4 GHz band.
    When it matters: When you need better speed and signal strength in rooms that are harder to reach.

    Importance: MEDIUM

    Tenda A21 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
    Tenda A21 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.
    What it is: The antenna gain, describing how effectively the antenna focuses signal.
    When it matters: When you need better speed and signal strength in rooms that are harder to reach.

    Importance: LOW

    Tenda A21 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
    Tenda A21 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.
    What it is: The power the extender typically uses during normal operation.
    When it matters: When you care about energy use, heat output, or running costs.

    Importance: LOW

    Tenda A21 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
Total
Overall
Wi-Fi Performance
Network & Security
Hardware & Deployment

Graphic comparison of Tenda A21 and

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Third-party reviews

United Kingdom
amazon
4.1
173 Reviews
amazon
3.7
6 Reviews
United States
Amazon_logo.png
4.0
16 Reviews

(Reviews last updated: June 2026)

What customers 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 customers dislike 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

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