1, the version of the mobile phone system is low, which does not support the current healthy version of Huantai. You can try to update the system version or wait for Huantai Health Adaptation to support more models.
2. Turn on "Traffic Free Mode" and the APP cannot be downloaded. You can try to turn off this mode and switch to a normal network environment before downloading and installing.
3. Mobile phone security software or permission settings prevent applications from downloading and installing. You can try to turn off relevant settings or uninstall security software before downloading and installing.