Wed Feb 07, 2018 1:18 pm
On my test device I can read this in the MTK Engeneer Mode ("call" *#9646633# and go to Telephony > Band Mode > SIM1"). Maybe this helps you.
GSM Mode: EGSM900, DCS1800, PCS1900, GSM850
UMTS Mode: WCDMA-IMT-2000, WCDMA-GSM-900
LTE Mode (only for SIM1): Band 1,3,7,8,20