File transmission method, device, electronic device and storage medium

Abstract

The present invention provides a file transmission system, method, device and storage medium, the system comprising: a mobile terminal, a portable wifi, and a cloud server; the mobile terminal is connected to the portable wifi and accesses the cloud server through the portable wifi; the mobile terminal is used to receive an upload request for a target file, detect whether the target file is stored in the cloud server and the portable wifi, and upload the target file to the portable wifi when it is determined that the target file is not stored in the cloud server and the portable wifi; the portable wifi is used to asynchronously upload the target file to the cloud server when the target file is stored; and is used to receive and store the target file uploaded by the mobile terminal when the target file is not stored, and asynchronously upload the target file to the cloud server; the cloud server is used to receive and store the target file asynchronously uploaded by the portable wifi. The present invention does not require the mobile terminal to maintain the working state of the mobile terminal and the stable availability of the mobile network for a long time.

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