If your camera won’t switch to the front or back camera, try force-closing the camera application and re-opening it. If it still won’t switch, reboot your device. If this doesn’t solve your problem, you can try factory resetting your device. For instructions on how to do this, visit the BU Studio 7.0 II Troubleshooting page. BLU Studio 7.0 II Troubleshooting
Check the charging port for any debris that would prevent the charger from connecting properly. Attempt the charge the device with a different charger to verify that the charger isn’t defective or faulty. Leave the phone on the charger for fifteen to thirty minutes before attempting to power the device on.
It needs a full-sized SIM card. If you don’t have a full-size SIM card, you can use an adapterlike this one to make your micro SIM or nano SIM work with your phone. It will only work with GSM carriers such as AT&T and T-Mobile.