I don't know noithin' about that but....I do know that the "4G LTE" that most all of our phones have these days, is a bit of a fraud.
"4G" designates a very specific set of performance criteria and cababilities. Our phones and systems don't come close to meeting those criteria. But..."3G" was getting "tired" from a marketing standpoint, and they couldn't wait.
The "LTE in "4G LTE" stands for "long term evolution". Essentially they're saying that it isn't 4G now, but maybe it will be some day!
Funny.....my Camry's a "hydrogen fuel-cell LTE".