Install steps (every tap):
1. Tap ⬇ Download for Android above.
2. If your browser warns about the file, tap Download anyway — this is our official app.
3. Wait for the download to finish (about 90 MB), then tap OPEN on the download notice — or pull down your notifications and tap safegrid-security.apk there.
4. If your phone says it's not allowed to install unknown apps: tap Settings, switch Allow from this source ON, then tap back.
5. Tap INSTALL. If you're updating, your login and settings are kept.
6. Tap OPEN — you're done.

Stuck? The file is also in My Files → Downloads — tap it there to install.