4.How to check the firmware version number
Turn on the device. Enter into Setting-> About Phone.
The “build number” is the firmware version number.
5. How to judge the device detected SIM CARD
a). Install the SIM CARD. Turn on the device.
b). Enter into Setting->More…->Mobile Networks->Access Point Names.
If there is not any APNS, it means the device has not detected any SIM card.
If there is some APNS, it means the device has detected SIM card.