topic Bluetooth Keyboard Input No Longer Works on S24 Ultra After Update on 04-17-2026 Ver S928U1UES5CZD2 in Galaxy S24

Bluetooth keyboard Error With S24 Ultra

Mujarva — Wed, 18 Feb 2026 14:48:34 GMT

I get an error message " Can't connect to ProtoArc XK04" every time I try to connect this keyboard to my S24 Ultra. Does anyone know what the problem and how to solve it?

Re: Bluetooth keyboard

LongHiker — Thu, 12 Feb 2026 18:58:44 GMT

@Mujarva Have you tried the steps outlined in that device's manual?

Re: Bluetooth keyboard

SamsungModerator1 — Thu, 12 Feb 2026 19:48:46 GMT

Hey Mujarva, thank you for reaching out to Samsung community. I see that you are having issues with connecting the keyboard with your phone.

To connect the ProtoArc XK04 to a Samsung phone, follow these steps:
Charge the Keyboard: Ensure the keyboard is fully charged before attempting to connect it to your Samsung phone.

Delete Bluetooth Pairing: Remove the keyboard's Bluetooth pairing from your Samsung phone's Bluetooth settings.

Enter Pairing Mode: Press and hold the FN key and one of the Bluetooth channel keys (Q, W, or E) for 3-5 seconds until the corresponding Bluetooth indicator light starts blinking rapidly.

Reconnect: On your Samsung phone, go to the Bluetooth settings, search for "ProtoArc XK04," and select it to start the Bluetooth pairing process.

Confirm Pairing: Follow any on-screen prompts to complete the pairing process. Once successfully paired, the Bluetooth indicator light on the keyboard will stop blinking and remain solid for a few seconds before turning off.

If the keyboard still cannot connect, try connecting it to other devices to see if the issue is specific to your Samsung phone. If the problem persists, consider reaching out to ProtoArc support for further assistance.

Re: Re: Bluetooth keyboard

Mujarva — Wed, 18 Feb 2026 13:40:35 GMT

Thank you! I've followed every step. The keyboard pairs to my phone, but it doesn't "connect". I reached out to the company to no avail. However, the keyboard connects easily to my S22 Ultra and my Samsung TV. BUT I haven't been able to connect it with my S24 Ultra.

Re: Re: Bluetooth keyboard

Mujarva — Wed, 18 Feb 2026 13:41:14 GMT

Yes

Re: Re: Bluetooth keyboard

SamsungModerator1 — Fri, 27 Feb 2026 16:36:39 GMT

Hmmm, that's unfortunate they are not following up with you. We got some more things we can try.
Let's try clearing the cache for Bluetooth. Sometimes the system's Bluetooth app needs a quick refresh to detect new devices:
1) Go to Settings > Apps.
2) Tap the Sort icon (next to "Your apps") and toggle Show system apps to ON.
3) Find and tap Bluetooth.
4) Tap Storage > Clear cache.
We can also try resetting the Wi-Fi/Bluetooth settings. If the S24 is still not detecting the keyboard, resetting the network stack can often clear up deep-seated connection bugs:
1) Open Settings and go to General management.
2) Tap Reset.
3) Select Reset Wi-Fi and Bluetooth settings (this will not delete your photos or files, but you will need to reconnect to Wi-Fi and re-pair other Bluetooth devices).
4) Tap Reset settings to confirm.

The last thing we can try doing is a Factory Reset on your device. If none of the other troubleshooting steps helped, I recommend backing up your data before following through with this guide. Check out the link here: https://www.samsung.com/us/support/answer/ANS10002030/

If these steps do not help, feel free to send us a private message to the link below with your IMEI number. Thank you.
https://us.community.samsung.com/t5/notes/composepage

Re: Re: Re: Bluetooth keyboard

Mujarva — Fri, 20 Feb 2026 02:34:26 GMT

You are so kind! I tried to clear my Bluetooth cache, however, the clear cache doesn't highlight when I press on it. The second suggestion I was aware of but afraid to try because I don't wanna rest the Bluetooth things that I already have connected to Bluetooth, I might have forgotten some of their connection names. Especially the ones that connect automatically. And that keyboard is the only one that I had trouble connecting to. The company said to just return it to Amazon, because we had no luck in connecting it to my phone.

Re: Re: Re: Bluetooth keyboard

SamsungModerator1 — Mon, 23 Feb 2026 03:49:36 GMT

Thank you for the update. We appreciate you sharing how the troubleshooting steps fared. It looks like we have tried everything I can think of. If a factory reset is not an option. The only other two things I can recommend are possibly reaching out to ProtoArc to see if they have any suggestions. Or you can use the link below to send us a private message, so we can see if this is a serviceable symptom. Please include your model number and IMEI number in your private message.
https://us.community.samsung.com/t5/notes/composepage

Re: Re: Re: Re: Bluetooth keyboard

Mujarva — Thu, 26 Feb 2026 07:28:21 GMT

Thank you! I finally got the keyboard connected. I followed your advice and just bit the bullet and I reset my Wi-Fi and Bluetooth. And now it works! 😊

Re: Bluetooth keyboard Error With S24 Ultra

Mujarva — Thu, 26 Feb 2026 07:29:37 GMT

I am VERY HAPPY now!😊

Re: Bluetooth keyboard Error With S24 Ultra

SamsungModerator1 — Fri, 27 Feb 2026 14:49:47 GMT

That is great news! 😀 I get that performing a factory reset can be a huge inconvenience, but it is a handy last resort for troubleshooting. To help out, if anyone else has this issue, I will update my previous post. Thank you for being a part of the Samsung community.

Bluetooth Keyboard Input No Longer Works on S24 Ultra After Update on 04-17-2026 Ver S928U1UES5CZD2

LexICT — Mon, 20 Apr 2026 02:06:30 GMT

My Logitech MX Keys S and a generic Bluetooth Keyboard worked until the last update I received on 04-17-2026. I can connect to these devices, but typing any characters fails.