Is there yet a fix for the delayed notifications on iPhone?

So apparently what I am experiencing is slight miscommunications, the routers apparently do have problems communicating at times, the provider said even his does that sometimes. So I think that's why I get slight delays. Not as bad, but just in case there was in fact a problem he brought me the same model but a different router just in case there was an actual problem with the other one. So far so good though! I guess I'm done here!

Well, I'm honestly thinking it's a router issue, as when I was living with my parents it never seemed to drop. I had to be connected to the 2.4 G connection there because the 5 G was too weak, but even being on the 2.4 G here in my tiny apartment is problematic. I'm thinking about changing my router first to see if that fixes it, I'll post an update once I receive it and let you know!

I called a tech support person to help me out, they couldn't see anything actually wrong with the router I have, so they'll be sending someone out. Hopefully they can fix it or get me a new one soon. No issues on cell data though!

I'd had a tech come yesterday, and he said that apparently where I live, the cables and connections are very old, and in my case, the cables were not connecting well. It had still been acting up after he'd left, however, as a last resort earlier today I unplugged the router and plugged it back in. Finally, everything seems to be working! He'll be checking back Friday but at least for now anyway, it all seems good!

So those of you who have been blaming apple, make sure you know your router isn't in need of an upgrade, make sure all of your connections are good and there's nothing interfering with the signal, (some companies are just horrible providers all around), and then if the problem still persists for you, then maybe think about sending a request for maybe a new device or if you have apple care, send it for repair before making an assumption that it's just Apple's fault.

I'm not fully positive yet it's fixed, I'll keep tabs on it. If there are no updates sooner, you'll know it's been fixed for me!

Okay, so no one came in the end or called me, and what I don't understand is why sometimes my router's app will sometimes say things like, "The app cannot connect to the modem" when it appears everything is fine. Of course the agent I talked to on the phone today blames apple. I guess there's really no point in my discussing this here, the last thing I'll say is I do not have this issue on mobile data. I wondered if it had to do with WPA3 not being an option on my router, but it is said to WPA-Personal and WPA2PSK AES and this still occurs. I am curious though if anyone has this issue with mobile data when using their phone out and about and have a decent signal. It's funny that my WiFi shows a signal but nothing comes through.

Yes, it does still happen on 2.4 G I've just discovered.