Use APKPure App
Get SIM serial number ICCID old version APK for Android
View and share the SIM serial number of your mobile phone.
View and share the SIM serial number of your mobile phone.
Excellent for operator change, contract change, SIM card replacement.
Do not just read the serial number from the SIM but also try to correct it if it is not consistent.
Frequently the operator changes are not successful due to the wrong SIM serial number.