Why can't the drone in flight receive the verification code?

Drones generally use IOT cards, and IOT cards can't receive short messages.

IOT card is an intelligent terminal equipment flow card provided by operators for IOT service enterprises.

IOT cards are only sold to enterprise users in batches, and are widely used in bicycle sharing, mobile payment, car networking and other fields, with the characteristics of low tariff, security and high communication efficiency. Because IOT card is very similar to ordinary SIM card, there is a "flow card" in the market, and its particularity of "anonymous authentication" makes IOT card a tool for online fraud.

On 20021May 12, the Ministry of Industry and Information Technology held a video conference on the prevention and control of telecommunication network fraud in the information and communication industry in Beijing, demanding that the risk remediation of key businesses such as telephone cards and Internet of Things cards be strengthened.