“Device checkup” is the only thing in DeviceHelp that actually does anything, and it only works once and fails to allow a repeat checkup. And the checkup itself fails to provide any quantitative data. The rest of DeviceHelp are just a bunch of very basic tutorial videos.
I used the checkup, it told me that my Wi-Fi was turned off, and nothing else. I turned the Wi-Fi on, DeviceHelp failed to update this info, and there was no way to reset DeviceHelp and try again. So I erased DeviceHelp . Tried it again, and now it told me that 4 areas of my phone were “ok” without any other data. Wouldn’t even provide me with how much battery life I have left, or how fast my connections are.
Useless. Don’t bother. Save your storage.