Hom much flow does SolaX 4G dongle cost every month?

For only real-time data uploading, 31 days * 288 entries (24*12) * 1024 Bytes/entry = 8928KBytes = 8.8MBytes. Considering remote upgrading and some other data-consuming functions, it is recommended to choose the 30MB/month package or a similar data package or service.