In article <1dkktzzyfaujv$.
d...@news.solani.org>, RonTheGuy
<r...@null.invalid> wrote:
> >> What kind of 5G?
> >> I don't know how 5G works but I heard a phone may not have all 5G bands.
> >
> > iphones have all three types: low, mid and mmw. other phones vary.
>
> What specific set of buttons do I press on the iPhone 12 to see the specific
> frequencies supported by the specific phone on the specific carrier?
you don't, because that does not matter.
however, the specs lists it:
<
https://www.apple.com/iphone-12/specs/>
5G NR (Bands n1, n2, n3, n5, n7, n8, n12, n20, n25, n28, n38,
n40, n41, n66, n71, n77, n78, n79)
5G NR mmWave (Bands n260, n261)
FDD-LTE (Bands 1, 2, 3, 4, 5, 7, 8, 12, 13, 14, 17, 18, 19, 20,
25, 26, 28, 29, 30, 32, 66, 71)
TD-LTE (Bands 34, 38, 39, 40, 41, 42, 46, 48)
CDMA EV-DO Rev. A (800, 1900 MHz)
UMTS/HSPA+/DC-HSDPA (850, 900, 1700/2100, 1900, 2100 MHz)
GSM/EDGE (850, 900, 1800, 1900 MHz)
5G (sub-6 GHz and mmWave)
Gigabit LTE with 4x4 MIMO and LAA4
Wi-Fi 6 (802.11ax) with 2x2 MIMO
Bluetooth 5.0 wireless technology
Ultra Wideband chip for spatial awareness
NFC with reader mode
Express Cards with power reserve
different carriers support different types of 5g, and then there's
bands within each type, but regardless, the phone will use whatever is
best in a given situation unless you explicitly disable 5g.
one reason to do that is to conserve on battery life since the early 5g
chipsets are still battery hogs, although they are much better than the
first 5g chipsets, which lasted about 1-2 hours on a charge and also
caused the phone to overheat.