📱 Nothing Phone (2a) - Nothing OS B4.1-260928-1157 Changelog

Firmware bot

Feedback? On your device: Go to Settings -> System -> Feedback.
Firmware rollouts are usually staggered, meaning not all users will receive the update simultaneously. This approach allows us to monitor for any issues and ensure a smooth and stable deployment.

What’s New in This Update

General Improvements and Bug Fixes

💬 Fixed an issue where third-party notifications could crash unexpectedly in certain scenarios.
⚙️ Enhanced overall system stability.
🛡️ Updated to October 2026 security patch.

Notes:
Your device may use more power and feel warmer during installation. Performance will return to normal after the update is complete.

Akash_Meher

When 2a will receive Open beta 5.0

beinghuman

Akash_Meher I think tmrw

Abhie

I faced an issue after the update. My Phone doesn’t getting 5g, But after a restart it got fixed

Daniel

[unknown] Please post in English.

KATTASAIKUMAR

Daniel when 5.0 update to 2a

Honey

Same question

ANSULSAGAR

Daniel when was nothing phone 2a Plus resive OS.5.O open beta update

Unhingedrhombus

It’s been 15 days, my Bluetooth is not connecting to any device. Some of the saved once get connected for few seconds and later automatically disconnects and never connects again. Tried resetting phone, issue didn’t resolved.

Kanishka Singh

Same here after updating my phone (3) to nothing os 5, my Skullcandy earphones are not connecting automatically and I always have to reset my Bluetooth settings to connect it again

TanishkSharma_7nrFm4jwxI

Kanishka Singh

Kanishka Singh same 🤚🏻

OndraUll_k

It looks like for me the ram not-working issue is solved. Before i had nothing X + spotify opened and third app would strougle and sometimes crash spotify. Now i had opened nothing X + spotify + instagram + WhatsApp + chrome + youtube and non of them restarted 🎉

FidusOzzwinDiengdoh

My Nothing Phone (2a), running build Pacman-B4.1-260928-1157-IND, has stopped recognising SIM slot 2. Both SIM slots worked before the October 2026 security update. Now neither Sim Card 1 nor Sim Card 2 works in slot 2, only one IMEI appears when I dial *#06#, and IMEI 2 shows null in Settings. The built-in diagnostic reports “No SIM card detected,” and I have submitted the diagnostic report. Please investigate whether this is a software or hardware issue and advise whether an official firmware rollback is possible.

Coldpaw

Hi, there is no need to open three different topics for your issue. Also keep in mind the Nothing Community is not the official customer support channel for Nothing, here it is mostly “users helping users”.

Have you already submitted a (detailed as possible) bugreport via the official support form?:

Settings -> System -> Feedback -> tap that little Feedback icon an fill out the form.

Since you have already tried to swap the SIM cards and the device still doesn’t seem to recognize the second slot, it could possibly be a hardware issue. One last resort would be trying to do a full factory reset just to rule out any kind of software related issue, however before doing that, I would wait for a better reply of the customer service or see if other Phone (2a) owners using the dual-SIM feature would actually chime in and share their experiences.

FidusOzzwinDiengdoh

Regarding your first point, I appreciate the advice, but perhaps there is a reason I opened three separate topics about the same issue. When a basic function of a phone suddenly stops working, and there seems to be no quick solution, a person naturally tries different ways to get some attention and find help. It wasn’t because I didn’t understand that all three topics concerned the same issue, but because I was desperate to find a solution as quickly as possible. I believe you can understand that frustration. And yes, I’m already well aware that the Nothing Community is primarily a “users helping users” platform, not an official customer support channel.

Coming to the technical issue, my suspicion is that this could be related to the recent security update patch. Before installing the update, both SIM slots were working normally without any issues. The problem started only after the update. Specifically, SIM 2 takes an unusually long time to activate, but eventually fails to activate altogether. I’ve already tried swapping the SIM cards, and the issue persists.

For your information, I’ve also already sent an email to the official Nothing Support team regarding this issue. I’m not ruling out a possible hardware problem, but given the timing of the issue, I believe the recent software update should be investigated before concluding that it’s a hardware fault. Hopefully, Nothing Support can identify the actual cause rather than having users resort to a factory reset without first establishing what’s gone wrong.

Coldpaw

FidusOzzwinDiengdoh I understand your frustration completely, but it’s like opening a dozen support tickets - it won’t get you any faster help. I can only say again this is not a tech support forum per se, sometimes Nothing staff chimes in on a thing or two, but that’s not guaranteed - there is a reason the official support form exists.

While the timeframe is absolutely suspicious, I have already witnessed such strange coincidences in tech myself, for example years ago my brother got a brand new monitor, hours later he got a corrupted picture - turns out the GPU developed a fault, he blamed his new monitor for it, but I can’t see a single reason how this could possibly have happened.

So yes, this issue, as pressing and important it is for you, should be investigated further. Personally I also wouldn’t do a factory reset right now and rather wait until more information comes along. I still hope other Phone (2a) dual-SIM users will read this and join the discussion.

I even done a quick search here but haven’t found any further reports which could be related to your particular issue. I would even like to test myself, however I only own NP3 and NP2 and also I don’t have any active physical SIM cards anymore.

However I started asking around on the Nothing Discord and at least on our German channel a Phone (2a) owner who uses dual-SIM and who has the latest security update said both SIMs are working fine as usual for him, even after the update he got zero problems related to SIM slots.

FidusOzzwinDiengdoh

I appreciate you taking the time to look into this further and even asking around on Discord. That’s genuinely helpful, and I respect the effort.

Regarding the multiple topics, I understand your point. However, when a problem arises unexpectedly and you’re struggling to find a solution, sometimes you try different avenues in the hope that someone who has experienced the same issue might notice and offer a solution. After all, when your phone suddenly starts malfunctioning, patience isn’t exactly the easiest thing to practise! 😅 Nevertheless, I understand what you’re saying.

As for the issue itself, I’m not claiming that the security update is definitely responsible. I’m simply pointing out that everything was working normally before I installed the latest security patch, and the problem started afterwards. SIM 2 now takes an unusually long time to activate but ultimately fails to do so. That’s why I believe the software update deserves closer investigation before the issue is attributed to hardware failure.

I’m also aware that another Phone (2a) user hasn’t experienced any problems after the same update. However, one person’s device working normally doesn’t necessarily rule out a software-related issue affecting another device. Differences in device configurations or individual circumstances could potentially be relevant.

Besides, I’ve already contacted the official Nothing Support team by email, so I’ll wait for their response and see what they have to say. Hopefully, more Phone (2a) dual-SIM users will join this discussion, as their experiences could help establish whether this is an isolated case or something more widespread.

Another possibility I’ve been considering is whether this issue could be related to the regional software build. Since my device is running the India build, I’m curious whether other Phone (2a) users in India who installed the same security patch have experienced similar problems, even if users in other regions haven’t.

I’m not claiming that this is necessarily a region-specific bug, but I think comparing experiences across different regions and software builds could help narrow down the cause. It would be useful to know whether this issue is isolated to my device or whether other users running the same build are experiencing something similar.

Anyway, thanks again for taking the time to investigate.

tomhoodjs

If these issues started after a software update, try restarting the phone and checking for any pending updates. You can also clear the cache of the affected apps and check whether the problem persists in Safe Mode. If nothing helps, sharing your Nothing Phone model and Nothing OS version would make it easier to figure out whether this is a software bug or a device-specific issue.

FidusOzzwinDiengdoh

Thanks for the suggestions. However, just for your information, I’ve already restarted my phone and checked for pending updates, but unfortunately, nothing has changed.

As I mentioned earlier, the issue started only after installing the recent security patch. Before the update, both SIM slots were working perfectly fine. Now, SIM 2 takes an unusually long time to activate but eventually fails to activate altogether.

I’ve also provided my device’s software build information and contacted the official Nothing Support team via email. At this point, I’m trying to determine whether this could be a software-related issue introduced by the recent update rather than a hardware fault.

I appreciate your suggestions, but I’ve already gone through the basic troubleshooting steps. What would be more helpful now is to hear from other Phone (2a) users running the same software build or to receive further guidance from the Nothing Support team.