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Panasonic KX-TG8421

Panasonic KX-TG8421
alaScore 84

56 reviews

Aug, 2018

alaTest has collected and analyzed 56 reviews of Panasonic KX-TG8421. The average rating for this product is 4.3/5, compared to an average rating of 4.0/5 for other Cordless Phones for all reviews.

We analyzed user and expert ratings, product age and more factors. Compared to other Cordless Phones the Panasonic KX-TG8421 is awarded an overall alaScore™ of 84/100 = Very good quality.

Review analysis

(Based on 56 reviews)

Expert Reviews  

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Consumer review ( review summary for Panasonic KX-TG8421


alaTest has collected and analyzed 43 user reviews of Panasonic KX-TG8421 from The average user rating for this product is 4.3/5, compared to an average user rating of 4.1/5 for other Cordless Phones on

93% of the reviews on give this product a positive rating.

This summary is based on the products: Panasonic KX-TG8421EB Colour DECT Single Phone With Answer Machine - BlackPanasonic KX-TG8421EB Colour DECT Single Phone With Answer Machine - Black

Aug, 2018

Expert review by : mfereday (

A Panasonic DECT Phone : Panasonic,KX-TG8421


While nowhere as near as prolific as new mobile phone handsets that appear on a regular basis, its near-cousin, the DECT phone, does come in a variety of models from different manufacturers.

The KX-TG8421 DECT phone looks better that its name would indicate. It is easy to set up and has a useful range of features. The handset should give up to 15 hours talk time or 250 hours on standby when away from the docking base. Panasonic has priced...

Jan, 2010

Expert review by (

Panasonic KX-TG 8421, 8422, 8423, 8424


In their new range of dect phones, Panasonic have launched the KX-TG range, a state of the art cordless phone. The stylish phone is available in both black and silver, and is full of features but still remains one of the easiest phones on the market to...

Dec, 2009

Product Specifications

Thanks to its universal design, unique technology and ecology its a perfect phone for a home office or for home life. The integrated digital answering system automatically answers and takes messages from the caller when nobody is home. The large, 2.0-inch screen is easy-to-read, and the GUI-like icon based menu screen lets you access functions without confusion. Items on the menu screen can be enlarged for easier viewing. You can also choose from 3 attractive Wallpaper patterns to suit your taste and room decor. The illuminated keypad and display also simplifies operation in the dark. The hands-free speakerphone or a connected optional headset lets you talk on the phone even when you're busy cooking, using your PC, or doing just about anything. It's also handy for taking notes, typing, etc. For easy dialing you can store up to 200 names and numbers in the built-in-memory. You can know who is calling before you answer if you have subscribed the caller ID service by your local telephone company: The LCD displays caller's name and number.

Answering Machine

Answering System Type:Digital
Recording Capacity:40min


Standby Time:Up to 250 h
Talk Time:Up to 900 min

Call management

Call blocking: Yes
Call log entries:50
Caller ID: Yes
Calling line identification presentation (CLIP): Yes
Conference call: Yes
Redialing: Yes
Speed dialing: Yes


Backlight buttons: Yes
Colour of product:Black / Brown / Silver / White
Mounting type:Desk

Dimensions & Weight (Base)


Dimensions & Weight (Handset)



Backlight colour:White
Built-in Display: Yes
Display diagonal:5.08
Display number of colours:65536 colours
Display Resolution:128 x 160
Type:LCD display


Packaged Quantity:1
Product Line:Panasonic KX


Battery capacity indicator: Yes
Battery full indication: Yes
Battery low indication: Yes

Management features

Alarm Clock: Yes
Any key answer: Yes
Clock with calendar: Yes
Navigation key: Yes


Call list capacity phonebook:50
Phonebook capacity:200
Redial list capacity:10 / 50

Other features

Base station keys:Y
Handset keypad locking: Yes
Mac compatibility: No
Wall mountable: Yes

Packaging Content

Base station: Yes
Belt clip: Yes


Answering Machine: Yes
Recording Time:40

Phone features

Multi base capability:4
Multi handset capability:6
Night mode: Yes
Number of melodies:14 / 20
Paging function: Yes
Polyphonic ring: Yes
Short Message Service (SMS): Yes
Speakerphone: Yes
VIP group function: Yes
VIP group with own melody: Yes

Ports & interfaces

Headset connectivity: Yes
Wireless Connection: Yes


Battery recharge time:7
Battery technology:Nickel-Metal Hydride (NiMH) / Nickel–Metal Hydride (NiMH)
Battery Type:AAA
Number of Batteries Supported:2
Standby time:250
Talk Time:15


Conference Call Capability:3-way
Cordless Phone Standard:DECTGAP
Dialer Type:Keypad
Header Features:W/ answering system & caller ID
Type:Cordless phone

Telephone Features

Automatic Redial:Built-in / Yes
Caller ID:Built-in / Yes
Handset Locator:Built-in / Yes
Intercom:Built-in / Yes
Speakerphone:Built-in / Yes
Voice Mail Capability:Built-in / Yes

Telephone Memory

Speed Dial Capacity:9

Weight & Dimensions

Base dimensions:98 x 150 x 52
Base weight:180
Handset dimensions (WxDxH):48 x 32 x 150 / 48 x 32 x 151
Handset weight:105