[msravi]

The hardest part is to get power management right. Anyone can build a modem that "works", but nobody other than Qualcomm, (and I really mean that), has gotten power management right.

What I mean is that even today, if you buy a 4G enabled phone not powered by Qualcomm, your battery will drain in a few hours and you'll be left with a dead brick for the rest of the day.

Source: I spent years building 3G and 4G PHY chips at various QC competitors that have all since folded up or have been bought and merged into other teams.

[wil421]

>What I mean is that even today, if you buy a 4G enabled phone not powered by Qualcomm, your battery will drain in a few hours and you'll be left with a dead brick for the rest of the day.

I had an iPhone 7 with an intel modem (AT&T iPhone) for 3 years. The battery did not die in 4 hours.

[MuffinFlavored]

There isn't a Qualcomm chip on the iPhone 7 whatsoever?

[selectodude]

Starting with the iPhone 7, all non-CDMA models had intel modems.

[msh]

Bullshit on the drained in a few hours. IPhone xs have quite fine battery life. See https://www.anandtech.com/show/13392/the-iphone-xs-xs-max-re... for example.

[etcet]

That test is using Wifi, not LTE.