This is a very important piece of safety knowledge that many people are unaware of. Wallet users must pay attention to security risks when connecting to public WiFi. Especially when you import wallet mnemonics or keys when using public WiFi, your wallet may be hacked and lose coins.
so:
1. Do not connect to unknown and unverified public WiFi hotspots.
2. Delete all settings on the device that enable it to connect to any WiFi network.
3. Whenever using a public WiFi network, use scientific software for better encryption.