What should I do if the Samsung mobile phone sm-a3000 card dies?

According to your description, I suggest you:

1. Unable to turn off the phone. It is recommended that you hold down the power-on key and the volume down key 10 for more than a second, and try to turn off the phone and restart it. If you still can't turn it off, you need to send your phone to a service center for processing. If it can be closed, you can continue to operate the following steps.

2. If an external SD card is plugged into the fuselage, take it out for testing. Eliminate the bad performance of SD card

3. Uninstall the third-party software test before the crash to eliminate the incompatibility between the third-party software and the mobile phone.

4. Back up the important data of the mobile phone and restore the factory settings.

If the fault still exists, it is recommended that you take the machine, purchase the invoice and warranty card, and send the mobile phone to the nearest Samsung service center for inspection and maintenance. For more information about the service center, please visit:

. Samsung . com/support/service locations . ASP

Samsung knows to provide you with high-quality solutions and answer your questions attentively, hoping to get your satisfactory evaluation.