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Surely there a set of defined standards for this sort of connection type stuff? Seems very odd the range of experiences people are having......
 
Kinda sorta. It’s the first phone to exclusively use the intel modem. Previous versions have been a mix of Qualcomm and intel.
But it's the very first Intel chip to support Verizon/Sprint on an iPhone. The previous Intel modems didn't support CDMA. That's the whole point.
 
Yeah I hope they don't slow down all the other devices so their flag ship ones outshine the rest. Like with the Qualcomm vs Intel modem deals. :)
They already did btw. At least, with the X. When it was launched, the difference between the Intel and Qualcomm modem was apparent (I had both devices). Now I see that my Qualcomm X does not have signal in some places where I always had it, but didn't have it with Intel either. Apple is good at this stuff, that's for sure.
 
...and toggling airplane and roaming on and off a bunch of times and now I'm at:

31.2/9.05
30.8/10.8
41.4/3.39

So it seems to be a crapshoot - when it re-connects to the network, it might hit the right frequency/right tower, or it might not.
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That was an issue of voice, not data.
Ahhh. I don’t remember it being voice OR data. Just people complaining they were getting only 1-2 bars and a visual fix was applied.

Having said that, here in Miami I have not had much issue with AT&T’s cell service as they have definitely upped signal in previous “bad areas”.
 
But it's the very first Intel chip to support Verizon/Sprint on an iPhone. The previous Intel modems didn't support CDMA. That's the whole point.

This is irrelevant to LTE.

I had the Verizon X and now a Verizon Xs and have no issues on either WiFi or LTE.

Modem baseband is not trivial to develop, and it could just be an edge case that was never hit in testing. I used to develop GPRS baseband and we hit weird stuff with cell sites all the time.

It’ll be fixed in the baseband.

And to the MacRumors editor: there’s no “Verizon firmware”. That’s the carrier setting version, which is stuff like APN, visual voicemail, etc.
 
Keep in mind that the XS is the first iPhone using an Intel rather than QUALCOMM modem chip on the Verizon network.

*edit* I read that wrong. You are correct that this is the first iPhone that isn’t using a Qualcomm modem on Verizon. Ignore my previous comment.
 
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That is not technically true. Best Buy’s iPhone 6s and higher phones have always been Qualcomm ‘universal’ (different from ‘unlocked’) devices because of their ‘Choose phone freedom - any carrier, any phone, any plan’ philosophy. The iPhones are only ‘locked’ to a carrier once they’re activated. This also has the lovely side effect of reducing inventory complexity and making it so there’s less of a chance of being ‘out’ of a phone for a certain carrier like previous devices.

If you buy an iPhone 6s, 7, 8, X, or XS series phone from Best Buy, as long as it’s not a PREPAID phone, it should be usable on any carrier in the US. If using it outside of Verizon, Sprint, AT&T, or T-Mobile, such as an MVNO or local carrier, you’ll need to put a Verizon SIM card in first, or it will tell you the SIM isn’t compatible with the activation server.

*fine print: I work for Best Buy Mobile.
I don't think you get it at all. The previous Intel modems didn't support CDMA (Verizon/Sprint). This is the very first version of the Intel modem that does. That's the initial point of the post you're quoting.
 
That is not technically true. Best Buy’s iPhone 6s and higher phones have always been Qualcomm ‘universal’ (different from ‘unlocked’) devices because of their ‘Choose phone freedom - any carrier, any phone, any plan’ philosophy. The iPhones are only ‘locked’ to a carrier once they’re activated. This also has the lovely side effect of reducing inventory complexity and making it so there’s less of a chance of being ‘out’ of a phone for a certain carrier like previous devices.

If you buy an iPhone 6s, 7, 8, X, or XS series phone from Best Buy, as long as it’s not a PREPAID phone, it should be usable on any carrier in the US. If using it outside of Verizon, Sprint, AT&T, or T-Mobile, such as an MVNO or local carrier, you’ll need to put a Verizon SIM card in first, or it will tell you the SIM isn’t compatible with the activation server.

*fine print: I work for Best Buy Mobile.

Okay, but it didn't change his fact which is true. The XS and XS Max use an Intel modem, previous Verizon phones were Qualcomm. Though this doesn't appear to be a modem issue for those that are having it.
 
I returned my Xs Max due to this issue. I couldn't risk it possibly being fixed with a software patch with only a 14 day return policy.
Apple has just done a second engineering capture on device #2 . If this was a minor problem I wouldn't have seen the exact same issue on 3 straight XS phones. It happened on both Verizon and AT&T. I would have tested T-Mobile also but I was out of town .
 
I’m no expert by any means but the fact that some users seem to have issues while others not, indeed make me think it is indeed a Software Issue. Maybe some setting in combination with some carrier settings. I don’t know.

Personally I feel mine is just as my X, and having making side by side test in location with weak WiFi and LTE signal along with my girlfriends 8 Plus, and I get exact same results in both phones.
 
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I think I found a solution for my slow LTE on my iPhone xs. Try doing this : go into cellular > LTE > data only. Just use data only, not the voice and data and try to do the speed test. It's significantly faster. Not sure if this is an ios 12 issue ir not.
 
Strange. I just lost all cellular data connectivity on my XS Max about an hour ago. I have 3 bars and the LTE symbol is showing but no data. Other iPhones in the office on the same carrier(AT&T) seem to be working fine.

Swapped the sim into a 6 plus works fine. I tried turning off LTE and resetting network settings and no luck.
I had the same issue yesterday. Restarting the device worked but that’s not a fix. I never had this issue with my 8.
 
I think I found a solution for my slow LTE on my iPhone xs. Try doing this : go into cellular > LTE > data only. Just use data only, not the voice and data and try to do the speed test. It's significantly faster. Not sure if this is an ios 12 issue ir not.

I think this is similar to what I reported back a page about toggling data roaming. You are forcing a reconnection to the network, which is then connecting to a different tower or to different frequencies. Toggling airplane mode a few times has a similar effect in my testing, and can also take a connection that is working fine and make it suddenly run super slow; it's luck of the draw each time the device connects to the network.
 
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The team I am working with at Apple confirms there is a major problem . I am only posting what they are telling me .
Ya. What they are working on is how can they make this just enough better to stop publicity. Recalling iPhones and retooling line Would probably never happen
 
dear god fix this. it's so irritating. I switched to Verizon for better service and got the Xs and since then, my service has been crap and it seems likely due to this issue as others I know on Verizon seem to be doing just fine
 
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