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Siemens Gigaset SL400 / SL400A / SL400H

Siemens Gigaset SL400 / SL400A / SL400H
alaScore 93

931 reviews

Oct, 2015

alaTest has collected and analyzed 931 reviews of Siemens Gigaset SL400 / SL400A / SL400H. The average rating for this product is 4.2/5, compared to an average rating of 4.0/5 for other Cordless Phones for all reviews. Reviewers really like the reliability and price. The design and size are also appreciated.

usability, size, design, price, reliability

We analyzed user and expert ratings, product age and more factors. Compared to other Cordless Phones the Siemens Gigaset SL400 / SL400A / SL400H is awarded an overall alaScore™ of 93/100 = Excellent quality.

Review analysis

(Based on 931 reviews)

Expert Reviews  

User Reviews  

Showing 117 review(s)

Expert Reviews User Reviews
Showing 1 - 94 of 117 Show Reviews: in English | in other languages (814)

Consumer review by: ( review summary for Siemens Gigaset SL400 / SL400A / SL400H


alaTest has collected and analyzed 84 user reviews of Siemens Gigaset SL400 / SL400A / SL400H 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 People are impressed by the reliability and size. The design and usability also get good reviews, but views are divided on the price.

usability, design, size, reliability

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

This summary is based on the products: Gigaset SL400A Single DECT Bluetooth Cordless Phone - Black / SilverExtra Handset Gigaset SL400H for Gigaset SL400Gigaset SL400H Additional Handset for SL400A - Black / Silver

Oct, 2015

Consumer review by: RACatalina (

Great phones, but...

We bought 2 Gigaset SL400A twins, as we need four phones and couldn't find anyone selling the quad version. They are great phones, which are very easy to use and set up. One of our main reasons for choosing them was the ability to transfer contact...

Apr, 2013

Consumer review by: 1960sgirl (

Beautifully designed phone

i'm very pleased with this phone. It is beautifully designed and made and for me, being able to site the phones anywhere in my house without the need for installing phone cable runs is really important. The sound quality is excellent, and the...

Oct, 2011

Consumer review by: Stephen (

Siemens Gigaset SL400A


Great build quality and battery life

Dec, 2014

Consumer review by: carol (

Siemens Gigaset SL400A


Clear reception whether your calling out or receiving a call

Dec, 2014

Consumer review by: Elena (

Siemens Gigaset SL400A


Lightweight and nice looking phones. We like the screen saver as a clock also. Have not used all the features yet as was bought for us as a Christmas box

Expensive for what they are, but we do like them

Nov, 2014

Consumer review by: Vicky (

Siemens Gigaset SL400A


It's links up via Bluetooth with hearing aids

Quite small, difficult with poor sight

Jul, 2014

Consumer review by: Dwayne (

Siemens Gigaset SL400A


These handsets are just quality. Far superior to the plastic of other phones

Costly but you pay for what you get. First two sets also had scratches on screen which was disappointing as had to return twice

Jan, 2014

Consumer review by: GM (

Siemens Gigaset SL400A


This is a fantastic phone. Very easy to set up, it's small and compact. The sound is brilliant. I've always had problems with sound on other cordless phones, but not on this one. The range is excellent, I take it with me in my jeans pocket when I go to...

I gave a low score of 5 out of 10 for value for money, simply because it is an expensive handset, but having said that, you get what you pay for. After years of buying cheap ones and eventually throwing them away, this phone is well worth it's price...

Jan, 2014

Consumer review by: Lez (

Siemens Gigaset SL400A


The phone has a quality feel and is nice and substantial in the hand, I was able to sync my handsets with my address book on my Mac which saved a lot of time setting it up

One of the more expensive cordless phones

Nov, 2013

Consumer review by: Kieran (

Siemens Gigaset SL400A



Quality of sound of outgoing message is extremely poor.- very muffled

Apr, 2013

Product Specifications


Built-in Camera: No
Cordless Phone Standard:DECT
Hands Free Functionality: Yes
Loudspeakers: Yes
Low Radiation: Yes
MMS Functionality: No
Polyphonic Ringtones: Yes
SIM Reader: No
SMS Function: Yes
Video Phone: No


Bluetooth: Yes
Ethernet: No
ISDN Port: No


Backlight Illumination:Display + Keypade Backlight
Number of Display Colours:65.536

General Features

Elderly Friendly Phone: No
Recording System:Digital Announcement and Recording / Not Applicable / Unknown
System Phone: No
Type:Cordless Phone / Cordless Phone with Answering Machine / Single Handset

IP Telephony

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


Display of Calling Number: Yes