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alaScore 89

494 reviews

Oct, 2016

alaTest has collected and analyzed 494 reviews of BT BT4000 TWIN. The average rating for this product is 4.4/5, 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 BT BT4000 TWIN is awarded an overall alaScore™ of 89/100 = Very good quality.

Review analysis

(Based on 494 reviews)

User Reviews  


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Showing 1 - 445 of 493 Show Reviews: in English

Consumer review by: ( review summary for BT BT4000 TWIN


alaTest has collected and analyzed 435 user reviews of BT BT4000 TWIN from The average user rating for this product is 4.4/5, compared to an average user rating of 4.1/5 for other Cordless Phones on

92% of the reviews on give this product a positive rating.

This summary is based on the products: BT 4000 Cordless Big Button Phone with Nuisance Call BlockerBT 4000 Cordless Big Button Phone with Nuisance Call Blocker

Oct, 2016

Consumer review by: Supergran (

BT Big Button 4000 Cordless Telephone - Twin


I love the fact you can block nuisance numbers

Nov, 2015

Consumer review by: Lizzy (

a really good phone


Very happy with this phone it was bought for me mum who is 91 and has poor eyesight, she is very happy with it and finds it easy to see and use.very good price too.

Nov, 2015

Consumer review by: Gogs (



Nice and easy to use and set up.

Oct, 2015

Consumer review by: cassy (

BT Big Button 4000 Cordless Telephone/Answer M/c. - Single


Easy to set up and use. plenty of features and number storage space

Oct, 2015

Consumer review by: LJ (

Easy to see numbers and easy to set up.


Can not find fault with them. They do exactly what it says on the box.

Oct, 2015

Consumer review by: Bill (

Just the job


This phone is ideal for me I can block those nuisance calls either from the UK or international also I know who is calling family etc...I recommend this phone. Very pleased with it.

Oct, 2015

Consumer review by: sid (

Not for me


Bought to replace another BT phone which was great. This only showed part of the number which was not helpful! Also did not let you know if there was a message. Have just taken back and swapped for a re placement which hopefully will have the features...

Oct, 2015

Consumer review by: Lyn (

Great Phone


This phone was an excellent purchase. Very easy to set up. A good size and easy to use buttons. Very happy customer.

Oct, 2015

Consumer review by: Sweet Berry (

BT Big Button 4000 Cordless Telephone/Answer M/c. - Single


I love this phone. It's easy to use and the volume on it is excellent.

Oct, 2015

Consumer review by: Gillian (

Big Button Cordless Telephone by BT


This product is simple to use - purchased for elderly couple - very pleased with product. Efficient phone directory proves useful for them.

Oct, 2015

Product Specifications

BT is one of Europe's leading providers of telecommunications services. Its principal activities include local, national and international telecommunications services, higher-value broadband and Internet products and services, and IT solutions. PRODUCT FEATURES: 255 name & number phonebook; SIM Card Reader/Writer; Call Waiting; Caller Display; GAP compatibility; 15 handset ringer melodies; Up to 10 hours talk & up to 100 hours standby time.


Standby Time:Up to 100 h
Talk Time:Up to 600 min


Built-in Camera: No
Cordless Phone Standard:DECT
Hands Free Functionality:No / Yes
Loudspeakers:No / Yes
Low Radiation: No
MMS Functionality: No
Polyphonic Ringtones:No / Yes
SIM Reader:No / Not Applicable
SMS Function:No / Yes
Video Phone: No


Bluetooth: No
Ethernet: No
ISDN Port: No


Backlight Illumination:Display Backlight / No
Number of Display Colours:Monochrome
Type:LCD display

General Features

Elderly Friendly Phone: No
Recording System:Not Applicable
System Phone: No
Type:Cordless Phone / Single Handset


Model:4000 SMS
Packaged Quantity:1
Product Line:BT Synergy

IP Telephony

H.323 VoIP-Protocol: No
IP Phone: No
SIP-Standard (Session Initiation Protocol): No


Display of Calling Number: Yes



Service & Support

Type:1 year warranty


Conference Call Capability:3-way
Cordless Phone Standard:DECTGAP
Dialer Type:Keypad
Header Features:W/ call waiting caller ID
Type:Cordless extension handset

Telephone Features

Caller ID:Built-in / Yes
Intercom:Built-in / Yes
Speakerphone:Built-in / Yes
Voice Mail Capability:Built-in / Yes