There's nothing "bad" about the 1901 but it's different to the Qualcomm modem. That's a fact. Enjoy your phone. It's totally fine. But Qualcomm v Intel is different. See iPhone 7
https://9to5mac.com/2016/10/20/iphone-7-qualcomm-intel-modem-cellular-performance/
There are actually reports the T-Mobile model is faster than Verizon. But until we get a real write up, I'll go with the better node process.
iPhone X - A1865:
- Qualcomm X16
- 14nm Samsung FinFET
iPhone X - A1901
- Intel XMM 7480
- 28nm (TSMC?)
As you can see, when it comes to the process, the Intel modem is 1.5 nodes behind the Qualcomm modem
https://www.reddit.com/r/apple/comments/79k7vr/iphone_x_qualcomm_vs_intel_battery_life_real/
See, that's why I chose the words that I did. I'm not saying that the Qualcomm baseband chip isn't better than the Intel one, which I don't know but can believe it is. When you have 2 suppliers for a component it is often the case that one is better than the other. Usually it's because one can't provide enough volume so there's a lottery but in this case it's because Intel can't provide a CDMA baseband, which Apple would prefer they did, so the Qualcomm hybrid GSM/CDMA baseband may come with that unintended side benefit, which if you can choose to get over the other and you trust that it is better, more power to you. Absolutely.
What I am saying is that the A1901 is the more common iPhone X model, and in some regions of the world it's the single one offered (and would be too in the US if Apple didn't support CDMA which they "only" started with the iPhone 4). And by that, that the A1901 and all of its components are absolutely iPhone X spec, any differences that may exist (which again I may not be sold on until I see some numbers but I can regardless believe they do exist) will be marginal, and when I see people buying into this unnecessary paranoia, in regions where you can't even get the A1865, I know the splitting of hairs - I mean, we're getting down to worry about the fabric process of an iPhone subsystem - is getting too far. And buyers paranoia is a very common occurrence when an iPhone comes out, which is unnecessary and needlessly detracts from people enjoying their absolutely top notch phone (pun intended :P). My A1901 has good reception, excellent battery life and great LTE speeds - better than my Huawei 4G home gateway.
When I got my 6s Plus and it had a Samsung-made A9, boy was I pissed. I couldn't really send it back either. It shadowed what should have been a joyful moment of getting a new iPhone. And 2 years later, in retrospect, it really didn't matter and I regret that I worried. The phone was absolutely up to the spec, and most people selling a 6s nowadays aren't even aware or mention the SoC provided.
TL;DR: if you live in the US, believe that the A1865 is better than A1901 and can get it instead, more power to you. If you got an A1901 and would be a hassle to exchange it, or live in some regions where straight up nothing else than the A1901 is offered, then my god please just enjoy your phone instead of being paranoid, any differences will be marginal and they both completely fulfill what an iPhone X is.
