Can anyone confirm that an (Ex ATT) N920A version of the Galaxy Note 5 phone supports 3G on the 900Mhz band. If so is there a setting to enable it, or is there something about the O2 LTE network that might prevent it being used.
The specs* suggest it should, but I have one that has been flashed with Android 7.0. and I can't seem to get it to use 3G on 900Mhz. I live in a village where the local mast only offers 800 & 900 Mhz, but it is not clear what O2 offer on those frequencies.
I have Note II which picks up a good 3G HSDPA signal, (UTMS : HOME(CS+PS)) signal on WDCMA 900 band 8. The Note 5 however gets a good 800Mhz band 20 LTE signal, but defaults to 2G GPRS (PGSM900) for voice calls. Forcing it to WCDMA results in no voice capability at all.
Taken to other places I can get a 3G WCDMA signal - but it seems to be only on the 2100Mhz band.
I am trying to work out if the problem is
a) the N920A doesn't support 3G on 900Mhz only on 2100Mhz
b) I have a bad N920A phone
c) there is a problem with Android 7.0 on this phone
d) There is soemthing wrong with the network settings on the phone
e) There is something about the local O2 mast that prevents an LTE capable phone from using 3G
My knowledge of the network, and particularly how 4G works is limited, and I am hoping someone (possibly someone who has a N920A Note 5) can provide either an answer, or pointers as to where else to look.
Regards
*From http://www.smartphonezero.com/samsung-galaxy-note-5-sm-n920a-sm-n920f-sm-n920i-sm-n920v-sm-n920t-spe...
SM-N920A
2G: GSM 850 / 900 / 1800 / 1900 MHz
3G: UMTS 850 MHz (B5) / 900 MHz (B8) / 1900 MHz (B2) / 2100 MHz (B1)
4G: LTE 700 MHz (B17) / 850 MHz (B5) / 1700/2100 MHz (B4) / 1900 MHz (B2) / 700 MHz (B12) / 2300 MHz (B30)
