XK04 Foldable Compact Keyboard for Phone and Tablet, Black | Pocket-Sized, PU Leather Cover, Bluetooth 3-Device Workflow, for Business Travelers, On-the-go Typing

The ProtoArc XK04 has been a great addition for getting work done when I’m away from my desk. It’s thin enough to toss in a bag for a coffee shop session before a meeting, and the setup is fast enough that it doesn't feel like a chore to pull out. I also use it at home to knock out a bit of work on my phone or tablet while watching TV in the evening. It isn't as rigid as a full-size desktop keyboard, but for the size, it’s surprisingly comfortable to type on and even works fine for gaming. The best feature is that it stores three Bluetooth profiles. Being able to toggle between a phone and tablet instantly without re-pairing is a huge time-saver. If you need a compact, reliable keyboard for travel or casual use, this one is hard to beat.

I couldn't be happier with my ProtoArc Foldable Keyboard! As someone who is always working on the go, finding a keyboard that is truly compact, easy to pack, and comfortable to type on felt impossible—until I found this. It folds up incredibly small to fit in my bag, connects instantly to my devices, and the keys feel snappy and satisfying. What really blew me away, though, was ProtoArc’s customer service. I had a quick question about my device, and their support team responded almost immediately, resolving my inquiry with absolute kindness and efficiency. It is so rare to find a company that matches a high-quality product with genuinely outstanding customer support. 10/10 recommend—I'll definitely be buying from ProtoArc again!

This keyboard genuinely surprised me. I picked it up to pair with my Galaxy Z Fold 7 and it has completely changed how I use that phone. Propped up in flex mode with the XK04 in front of it, the whole setup feels like a proper micro workstation rather than a phone trick. The fold mechanism is solid with no wobble or flex when typing, and the key travel is better than I expected from something this compact. Bluetooth pairing was instant and has stayed stable across sessions. The PU leather cover doubles as a stand and keeps everything protected in a bag without adding bulk. Typing speed comes up quickly. There is a short adjustment period to the layout, but within a day or two muscle memory adapts. Build quality feels durable and the whole package is impressively light given how sturdy it feels. If you have a foldable phone or tablet and you want to actually get work done on the go, this is the keyboard to grab. It earns every star.

I felt this keyboard met all my expectations. Compact, efficient, and long lasting battery. It provides a mini mouse pad even, when you fold it up. Sometimes you only need a keyboard for starting up, and launching programs, especially when you're getting ready for a gaming session. This was ideal for my latest work trip, and complimented my handheld PC nicely. Highly recommend this one! Easy to set up, and change the macro for F keys and media control. I didn't even notice any noise coming from the keys. It's compatible with windows, but that's all I tried it with. I used the Bluetooth feature. Great keyboard!

This is a well-designed product. It paired very easily with my Samsung Tablet and Samsung Phone. The keys are comfortable to type on for it being so compact. The keys have good travel and they look durable. When folded - the width and breadth are quite small, although the thickness is a bit more than what I expected - nothing bad, but whih it was a bith thinner. The mechanism at the hinge is impressive. I am typing this review on my phone using the keyboard. This will be a nice keyboard for travel. Keys are quiet as well.

When ordering this keyboard I figured it’d be a typically cheap and poorly made product like many other budget tech on Amazon. In reality, this is a very well-made foldable keyboard and I was surprised by the quality. Very responsive, very light, and folds to a great size. Comes with a nice charging cord as well. Great packaging. Set it up in about 30 seconds and was immediately usable. Would highly recommend to anyone looking for a portable keyboard — works great with my Lenovo Legion Go

This would be perfect - but it keeps losing its Bluetooth connection. I bought a replacement from a different manufacturer - but their ad lied about what charger it uses so theirs is already going back. This one - I get halfway through an email and it'll lose the connection. Then it's 2 minutes of fumbling around trying to make it work again, the tablet closing applications when it reconnects, and then me praying it won't do it again. First I thought it was battery, and I started using it plugged in (I'm using this in a truck). But it'll still do it. Calling this "frustrating" is an understatement. I'm surprised I haven't broken this over my knee yet and thrown it out the window. Someone explain to me WHY it's impossible to find a "full size" (or nearly full size) folding keyboard - that has BT 5.0, uses a USB-C charger, that doesn't have a useless number pad, that WORKS. I may just order another one of these and roll the dice again - but I'm beginning to believe all of these are junk no matter what you buy. I only need these things to work for like 30 minutes without having an issue. It's not like I'm on it all day. Let me write 1 or 2 emails and fill out a timesheet without any issue - BUT NOOOO - apparently that's asking too much. EDIT - I wound up buying a Samers KF08S keyboard instead. It looks just like this - but it's not the same. Slightly larger (actually full size), the power button seems better, and most importantly - it's been working perfectly. I'm using these with a Samsung tablet (a higher model, provided by my company) and I haven't had issues yet with the Samers model. The Procarc would cause all applications to close - if I turned it on AFTER I launched the app I needed. That was insanely annoying since everything requires a password on the tablet - and I can't shut that feature off due to company security. The Samers doesn't do that. I can turn the keyboard on and the tablet couldn't care less. It works exactly how you'd want it to work. Maybe it's the Samsung Tablet, the version of Android, the Proarc keyboard causing the issue - who knows. Your experience may be different. But the Samers model is almost exactly the same - just a little bigger - and everything on that has been working flawlessly. It's been a little while now and still no complaints with the Samers model. I can turn it on and start using it with any app launched on the tablet and it just works. First time, Everytime, it works. It causes no crazy problems like closing apps down, it connects quickly and just works. Amazing right? Something finally does what it's supposed to - without causing 3 other headaches in the process.

Bought this to pair with my tablet to make a more compact and travel-friendly work station! I love this compact keyboard! This connected easily via Bluetooth and honestly is such an improved sensitivity vs the cheaper case with keyboard options. It folds to about a hard-drive size and is super lightweight, making it extremely travel-friendly and easy to slip into any purse. Battery lasts really long. I've been using it for weeks on and off, and I still haven't needed to charge the keyboard. Keyboard feels well-built and doesn't feel like a cheap keyboard at all.

Really nice piece of gadget that fits in my small folio bag and is an excellent travel companion.

this is a terrific keyboard! Worked immediately. great size & light. Having the phone holder is big bonus for me. Practically means I rearely use my laptop or PC. Keyboard is EASY to use

I bought this folding keyboard mainly for its compact and lightweight format (I use it with iPad). It fits easily in a bag, unfolds within seconds, and provides a typing surface that feels very close to my 12” MacBook (2016) or the Magic Keyboard for iPad. The keys are comfortable and pleasant to use. Once unfolded, it feels like a full-size keyboard, so I don’t get the sense of being cramped. Even the slightly off-center space bar doesn’t bother me at all. The hinge falls under the right thumb, but that’s not an issue for me since I know what I bought and I accept the small compromises that come with a folding design. The build is entirely plastic, so of course it doesn’t have the premium aluminum finish Apple would offer, yet for the price I am genuinely impressed by the engineering behind it. Battery life has been perfectly fine so far. I sometimes type with the keyboard on my lap, for example on a plane, and while it can feel a bit less stable, it remains functional. The trick I found to prevent it from bending in the middle while typing is simply to support it with my thumbs underneath. It’s easy enough to do and doesn’t affect usability. I also customized it to fit my needs: I use a Canadian French layout, so I added stickers for certain keys, and I covered the brand name printed across the space bar since I didn’t like it showing. These small adjustments make the keyboard feel more personal. Overall, this is an excellent compromise between portability, comfort, and price. I was pleasantly surprised by its quality and practicality. It’s not as solid as an Apple keyboard, but for what it is, it works very well and I can carry it anywhere without hassle. With the added reassurance of a two-year warranty, I feel confident in my purchase. For now, I am very satisfied, and it’s proving to be a great little tool.

Excelente producto, no viene con la "ñ" pero se puede configurar desde la tablet para que tenga esa letra.

It’s a good option. The folded form is genuinely portable, they keys feel good and the smaller size is workable, although I do typo more, which seems like a fair trade off since I don’t use it constantly to get familiar. Easily swaps between my iPads and Vision Pro, have only charged once since I got it a few weeks ago. Feels pretty solid so far. I’ve already had a college buy one having tried it. Have one thing in mind, the unlocked position is not locked, if it is not on a solid surface you will have it foot a bit as you type. But there is nothing claiming otherwise, in fairness.