SiteOS SMS Gateway

Tap below to download the app to this phone. Once it's downloaded, follow the setup steps below.

1. Open the downloaded file from your Downloads or Files app (not the browser's download banner) to install it.
2. If Android blocks the install: go to Settings → Apps → Play Store → ⋮ → Play Protect and turn off "Scan apps with Play Protect" temporarily, then install from Files. You can turn Play Protect back on afterwards.
3. Open the SMSGate app and grant the SMS, Phone, and Notifications permissions when prompted. On Android 15, if SMS looks greyed out: App info → ⋮ → Allow restricted settings → Permissions → SMS → Allow.
4. In the app, go to Settings → Battery and disable battery optimization (set background usage to unrestricted). Reboot the phone once after changing this.
5. Keep this phone on a charger permanently — that's what keeps message delivery reliable.
6. Turn on Cloud mode on the Home screen. The app will show a username and password — enter those back in the SiteOS enrolment wizard.