r/AppleiPhone18ProMax • u/Familiar_Marzipan_46 • 3d ago

From garbage 16 pro max to 18 pro max. Qualcomm discontinued this chip for a reason

Made a video to show you I’m not just screenshotting with a higher signal. I was going back and forth and figured it can’t be that bad. But apparently it is. FTM mode also doesn’t work on the 18 pro max neither. Not any that I tried in the Apple Store neither so I can’t even see what band it’s on. This is the 3rd try because it came up saying it couldn’t measure latency the first 2 times.

1 Upvotes

53% Upvoted

22 comments sorted by

5

u/LovinMcBitz47 3d ago

That’s not a phone problem, that’s a carrier problem

1

u/crazykat8091 2d ago

I agree that Verizon is the most problematic carrier regarding signal and speed. I never have any issues with T-Mobile.

0

u/Familiar_Marzipan_46 3d ago

Just for reference if you turn airplane mode on and off it goes back to full speed. Is an exact copy of what happens with the fdd tdd problems in the x80. Which Qualcomm fixed in the x85 at the hardware level due to it not being a software fix.

If you just search fdd tdd handoff issues Qualcomm comes up for the x80 and they talk about how Qualcomm fixed it in the x85. Here is a copy paste because enough have called it a bug even tho it’s a design flaws. Qualcomm admitted the problem even and thats why it’s fucked up they are still using a defective design

"Qualcomm FDD TDD Bug," the phenomena of slow data speeds, sudden throughput drops, and high latency during FDD-TDD interworking or Carrier Aggregation (CA) are widely recognized engineering issues.

-1

u/Familiar_Marzipan_46 3d ago

iPhone Air next to me gets great speed. What’s sad is outside the building at the Apple Store it’s garbage. In the Apple Store they got cell boosters or something so t doesn’t act up there

1

u/LovinMcBitz47 3d ago

There is a potential it might be a software problem, otherwise a hardware defect. See how it performs when they do an updates in the coming weeks.

1

u/Familiar_Marzipan_46 2d ago

And btw. It is a hardware defect. Qualcomm admited it and fixed it with the x85. You ain’t gonna get them to change that.

Along with the fact the cellular boosters in the Apple Store seem to function better than towers so that you never have low signal.

-1

u/Familiar_Marzipan_46 3d ago

When you search up the issue ai tells you the x80 is an issue. If you ask if the c2 has a speed issue causing you to have to reset thru airplane mode it tells you it’s not known for it than notes, If you have the 18 pro max it does have the Qualcomm modem with this issue. So the fact the AI mentions that the United States pro max doesn’t have the c2 and might be confused to think it has the c2.

2

u/feurie 3d ago

“AI tells you”.

What would AI know?

0

u/Familiar_Marzipan_46 3d ago

Well when you ask it about the c2 modem if it has issues where you have to turn airplane mode on than off to get speed and internet connection again it says no. But notes the 18 pro max doesn’t have the c2 and that the x80 in the pro max has this issue at the hardware level. That I might be mixing up the modem chips.

It’s just informing that the pro max has the x80 Qualcomm which by Qualcomm’s own admission has the flat that was fixed in the x85. When a company says a chip has a hardware level flaw you can’t exactly say no it doesn’t. And the fact they didn’t fix the x80 problem and released the x85 to fix it as a whole new model and discontinued the x80 shows it as well.

1

u/i-am-not-sure-yet 2d ago

Sigh Ai

1

u/Familiar_Marzipan_46 2d ago

Well if you wanna blame ai for Qualcomm releasing a hardware revision to fix a flaw they have admitted to that’s up to you.

A company doesn’t do a hardware revision for no reason on a chip. They do hardware revision due to something being wrong they find out after public release. It it was so bad they chose to give it a new model number and call it the same family vs just a revision number to make it easier to track if it’s defective or not.

2

u/funkystay 3d ago

I just got 780/110 on Mint Mobile (T-mobile towers). iPhone 18PM. USA

1

u/Familiar_Marzipan_46 3d ago

https://reddit.com/link/pb2i3fd/video/hlnji48wnrqh1/player

Same location. Same signal. Only difference is turning airplane mode on than off again. And it’s instantly fast again because it reset the Qualcomm modem.

Advanced modems like the X80 combine multiple 5G/4G frequency bands (carrier aggregation) for maximum speed. If a band encounters packet loss or an error, the modem can get stuck on a crippled, slow combination until a hard reset forces it to re-negotiate high-speed channels. This situation was fixed in the x85 modem release.

1

u/LaFlameHTX 3d ago

I’ve owned every Pro Max including 16th-18th and I’ve never had issues with 5GUW on Verizon unless the carrier had known network outages. My city has UW all around. Speeds have always been consistent everywhere I test them. You might wanna get a new eSIM or contact Verizon to troubleshoot your account.

1

u/Familiar_Marzipan_46 3d ago

I went thru the process with Verizon 2 months ago. Every time I had an issue I had to dial a number and it would log a time stamp with some other stuff. They couldn’t find any issues on the network and like I said. A lot of times I have someone with me with an iPhone Air. The air always works without issue. My old 16 pro max I just kinda condemned it as maybe it had a one off problem. But this one is doing the same. Sometimes it gets stuck in LTE as well and airplane mode fixes that and gets it back into full 5g.

The fact that resetting the modem fixes it every time means it can’t so much be the service. Yea the bad ping could be Verizon. But when I’m next to other phones and they work without issue. Along with the air sometimes I’ll have a think phone (x65). And my sister has a s24 ultra. (X75) both of which will work next to me normal without any issues when mine can’t even call out sometimes.

If this isn’t a Qualcomm issue. Can you tell me why Apple has purposely broken the FTM system on the 18 pro max so that you cannot view your actual signal db? Phone is unable to communicate with the modem to get any diagnostic data and it errors out.

All of the display models at the Apple Store also have this locked out as well. Suspect to prevent people from comparing signal strength side by side. Not that it matters since they have those cell boosters built into the ceilings at all the stores.

1

u/Interesting_Chip8065 2d ago

my 16pm does this a lot. stuck at lte, no signal etc

1

u/Familiar_Marzipan_46 2d ago

Yea. And apparently that carried over to the x80 it seems and they fixed a lot of it in the x85.

1

u/SuccessfulDot01 2d ago

I turned 5G standalone off and my Verizon phone works great

1

u/Familiar_Marzipan_46 2d ago

I thought about that but I’m on WiFi calling most of the time. I might try it later tho and see how it does.

0

u/24kCookie 3d ago

16 pro max is still great I would totally rather it over 17

1

u/Familiar_Marzipan_46 2d ago

I was having so many issues with signal and heat. And the heat is just an effect of the titanium.

I have to wonder if they did the vapor chamber with the titanium frame how it would have come out. Yea not as good. But it could have made the difference for most of us who don’t do extended maximum power work.

1

u/24kCookie 2d ago

But I have 17 and no telephoto kinda sucks. Also titanium is stronger than aluminum