How to get 2nd IMEI number using adb?

Which code to use with service call depends on Android release. On Android 9 IPhoneSubInfo method 1 returns first IMEI while methods 3 and 4 return both IMEIs:

~$ service call iphonesubinfo 3 i32 1 | grep -oE '[0-9a-f]{
8
}
 ' | while read hex; do echo -ne "\u${
hex:4:4
}
\u${
hex:0:4
}
"; done; echo

~$ service call iphonesubinfo 3 i32 2 | grep -oE '[0-9a-f]{
8
}
 ' | while read hex; do echo -ne "\u${
hex:4:4
}
\u${
hex:0:4
}
"; done; echo

Related: How to check IMSI/ICCID on MIUI10?