I have several SIM7000Es in use and have 3 SIMs from different providers working OK.
See my debug output:
Modem communication in BLUE, with commands in Italic.
<<perform power on reset sequence here>>>
LTE start >>>DEBUG line 3229; SP=8425[0/0/0@Pwr_on]{
[color=blue]RDY
+CFUN: 1
+CPIN: SIM PIN[/color]
}
>>>DEBUG line 3253; SP=8425[0/0/0@Pwr_on]{[color=blue][i]AT[/i]
OK[/color]}
LTE Alive
>>>DEBUG line 3268; SP=8425[0/0/0@Pwr_on]{
}
>>>DEBUG line 3272; SP=8425[0/0/0@Pwr_on]{[color=blue][i]AT+CPIN?[/i]
+CPIN: SIM PIN
OK[/color]}
Sending PIN=0000
>>>DEBUG line 3279; SP=8425[0/0/0@Pwr_on]{
[color=blue][i]AT+CPIN=0000[/i]
OK[/color]}
>>>DEBUG line 3279; SP=8425[0/0/0@Pwr_on]{
[color=blue]
+CPIN: READY[/color]
}
>>>DEBUG line 3314; SP=8425[0/0/0@Pwr_on]{[color=blue][i]AT+CSCS="IRA"[/i]
OK[/color]}
>>>DEBUG line 3316; SP=8425[0/0/0@Pwr_on]{
[color=blue][i]AT+IFC=1,1[/i]
OK[/color]}
>>>DEBUG line 3318; SP=8425[0/0/0@Pwr_on]{
[color=blue][i]AT+CMGF=1[/i]
OK[/color]}