The Cosmo Communicator is Earth Computers’ 2nd endeavor to reinvent the significantly-loved Psion Series 5 for the smartphone age in an Android/Linux incarnation. Its clamshell type aspect features a slide-out keyboard, and some features are workable devoid of the have to have to open up the product. It can be an thought that has created a large amount of interest, but does this £665.eighty three (ex. VAT, or £799 inc. VAT) handheld personal computer/smartphone have a position in your tech armoury?

Time was when smartphones with keyboards have been a matter. There have been slide-outs, hinged lids, and total frontal (Blackberry-fashion) keyboards. Just before that there was the Psion Series 5 (and some smaller variants much too), with a hinged lid defending a monochrome display screen and a slide-out keyboard that was simply globe class. Mobile comms was not integrated into the Series 5, but it was an magnificent little personal computer. I employed a person for a extended time as a pocket-sized creating machine. It was not just me: the Series 5 was iconic.

Many makes an attempt have been produced to resurrect the Psion Series 5, and the most recent have appear from Earth Personal computers. The United kingdom company’s to start with shot, the Gemini PDA, was intriguing but had its drawbacks. The Cosmo Communicator moves the thought on, importantly which includes functionality into the lid, which is a authentic boost to usability. 


The Cosmo Communicator is Earth Computers’ 2nd stab at re-imagining the 1997 Psion Series 5 for the smartphone era. It runs Android 9 and Linux (in owing program) on a MediaTek Helio P70 chipset with 6GB of RAM and 128GB of internal storage (expandable by using MicroSD).

Images: Sandra Vogel/ZDNet

This is a significant beast compared to a standard smartphone. The footprint — 171mm extended and seventy nine.3mm deep — is comparable to that of a significant-display screen (six.5-inch) smartphone, but it truly is a great deal thicker. The Cosmo Communicator actions seventeen.3m thick at its thickest level, which is the a bit elevated centre of the lid. It can be a weighty product much too, at 326g. 


The again of the lid segment is house to a 24MP digicam, a 1.91-inch AMOLED contact display screen and a fingerprint reader/touchpad.

Picture: Sandra Vogel/ZDNet

The place the Gemini PDA had a featureless lid, the Cosmo Communicator has a fingerprint sensor, a 24MP digicam with flash and a 1.91-inch AMOLED contact display screen. The latter is important to the device’s usability. With the Gemini PDA it was required to open up the clamshell to do really significantly anything. In this article, the display screen presents information and facts and caters for some interaction. For example, it will show a notification when a textual content will come in, and you can then faucet the display screen to dismiss it or initiate a response — you have to open up the clam to basically style a reply, but when you do so you happen to be taken suitable to the SMS application.

Incoming e-mails are shown in this article much too, and while you can only see the commencing of a concept, it could be sufficient to really encourage you to open up up and reply — again, when you do open up the clam, the applicable application is suitable in entrance of you creating the method of responding as speedy and seamless as possible.

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Far more than that, there is a basic menu on the entrance display screen. The fingerprint sensor is included in a tiny contact pad. A solitary push of the pad phone calls up the primary entrance display screen, displaying time and date, and a number of program icons (Bluetooth, battery, wi-fi and SIM position). Tapping the pad opens a different display screen displaying recent phone calls, and it truly is effortless to simply call a quantity on the record with a faucet. Tiny icons allow you to obtain contacts and a dialpad so you can initiate new phone calls, and as soon as in a simply call there are tappable icons for factors like speaker manner, muting and including contacts into a simply call.

A further display screen will get you into a menu of 8 shortcuts to functions like digicam, video clip, torch, power and options for the small entrance display screen — you can alter its orientation and brightness for example, and even allow it to car rotate. 

This entrance display screen is fantastically useful and its presence in this article presents a significant boost to usability compared to the Gemini PDA. Genuine, the a variety of interactive icons can be very tiny, but it truly is responsive and I uncovered myself fortunately dismissing textual content messages and using voice phone calls devoid of opening up the product. 

Open up the clamshell and a total QWERTY keyboard slides towards you. This is the coronary heart of the Cosmo Communicator, and its resemblance to the outdated Psion Series 5 is no coincidence. Indeed, the designer of the authentic Series 5 keyboard, Martin Riddiford, had a hand in its creation. The Cosmo Communicator’s backlit keyboard has a softer, significantly less definite sense than the Psion Series 5’s, but the similarities are noticeable.

I uncovered that some keys unsuccessful to sign-up with my usual mild contact, and I had to modify my speed and typing action a bit to compensate. But however, I was in a position to contact style at about 75 p.c of my usual speed, which is good heading for these kinds of a tiny keyboard.

The keyboard meant I could use the Cosmo Communicator for significant document creation — this critique was penned on it, for example. I worked on creating projects while out and about, whilst I had to be at a table as thumb-typing while standing with the product opened up or seeking to rest it on my knees have been the two unsatisfactory. However, I would get the Cosmo Communicator into conferences to compose notes in choice to my laptop. It would not be my continual typing product, but it would be the suitable in good shape for some events.


The primary display screen, with the software equivalent of the Psion Series 5’s components menu bar at the base.

Picture: Sandra Vogel/ZNet

The Cosmo Communicator’s primary 5.9-inch two,160-by-1,080-pixel display screen is intended mostly to be employed in landscape manner, but it will rotate into portrait manner to accommodate the simple fact that Android applications are, by and significant, intended to be employed in this orientation. However, keeping this product with the display screen in portrait manner is awkward and unwieldy.

The Cosmo Communicator runs Android 9 with a Cosmo overlay that features a quantity of bespoke applications. LEDIson was shipped with the authentic Gemini PDA and allowed callers and notifications to be recognized by way of a sequence of configurable LED lights on the product. It can be in this article again, even while it truly is redundant because the entrance display screen tells you who is calling, texting, emailing and so on.


Agenda was the Psion Series 5’s killer application, and Earth Personal computers has completed a good work of recreating it.

Picture: Sandra Vogel/ZDNet

Pre-installed third get together applications consist of Word, Excel and Skype, all of which are relatively far more practical. In its have software suite, Earth Personal computers has also absent to great pains to reproduce arguably the killer application of the Psion Series 5: Agenda. This diary application presented a clean presentation of my weekly diary, synced from Google Calendar, and also has superb 12 months planner and month to month totally free/occupied sights. I also quickly grew to become a enthusiast of the Notes application, which can seize textual content, illustrations or photos, videos and voice recordings.


The Cosmo Communicator’s Notes application.

Picture: Sandra Vogel/ZDNet

Tapping the critical to the still left of the space bar phone calls up a software menu bar that emulates the components-based mostly bar on the authentic Psion Series 5, supplying brief obtain to a array of applications. It can be arguably unnecessary presented the tappable application shortcuts, but is even so a nice bespoke element.

The Cosmo Communicator runs on a MediaTek Helio P70 chipset with 6GB of RAM. This system sent average Geekbench 5 scores of 296 (solitary core) and 1471 (multi-core), which are distinctly center of the highway.

You could sense that 128GB of internal storage is not sufficient, considering that 13GB of this is employed by the program alone. There is a MicroSD card slot for exterior storage, but working with that principles out the device’s 2nd SIM slot. That’s a disgrace, whilst the product does also guidance eSIMs. At least the SIM caddy is available on a person of the short edges of the lid segment with the Gemini PDA you had to remove the best of the lid segment to get at the  SIM slot.

Bluetooth 5, GPS, NFC and 802.11ac wi-fi — the NFC zone is on the lid. There is a three.5mm headset jack, a USB-C charge slot and a 2nd USB-C port for attaching a array of peripherals. Accessories consist of a USB-C-to-HDMI cable (£39.98 inc. VAT) and a USB-C Hub with two USB three. ports, a USB-C connector and an Ethernet port (£44.99 inc. VAT).

Connectivity is a critical component of the Cosmo Communicator’s functionality. It supports Debian Linux, and if you are so inclined the product can be related to a watch and an exterior keyboard and employed like a Personal computer. Perfectly, in concept. In simple fact, Linux guidance was not executed at the time of creating — enjoy the guidance internet pages if you happen to be interested in this aspect of the product. 

The Cosmo Communicator has two cameras: an outward-facing 24MP digicam, and a 5MP digicam to the best still left of the primary display screen. The internal digicam is effective fantastic for video clip calling, while the primary digicam is Ok for shooting basic photographs, but there is certainly little in the way of sophistication in this article. If you have to have far more than the basic principles, glance elsewhere. 

On paper, the 4,220mAh battery really should produce at least a day’s use, but in exercise battery lifetime was disappointing. The Personal computer Mark battery examination noted just six hrs and 13 minutes, and throughout tests I employed fifty{36a394957233d72e39ae9c6059652940c987f134ee85c6741bc5f1e7246491e6} of a total battery in about three hrs of typing on various events. If you happen to be significant about working with the Cosmo Communicator for day-to-day efficiency, you can have to have to glance out for charging points throughout the working day.


Picture: Earth Personal computers


The Cosmo Communicator is a different intriguing product from Earth Personal computers, and surely an advance on its Gemini PDA predecessor. When the Linux capacity gets to be readily available, it will have even better appeal. Possessing reasonably speedy keyboard enter readily available on these kinds of a tiny product is very eye-catching, and the bespoke applications are properly intended and nicely realised. The Cosmo Communicator could even change a laptop for some or all of the time, at least for some folks.

However, £799 (inc. VAT) purchases you a good laptop, and significant-display screen smartphones can be coupled with folding Bluetooth keyboards. This means that the Cosmo Communicator could battle to get traction outdoors a reasonably tiny area of interest, except Earth Personal computers can locate a way to lessen the value tag.

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