https://github.com/itds-consulting/android-silent-ping-sms
Java284
5 years ago
Silent Ping SMS for Android (does not require rooted device)
GNU General Public License v3.0
<b>NOTE:</b> App repo is archived by dev. It is read-only for all users and it is no longer actively maintained.
Send silent text messages: SMS will not be delivered as standard SMS, target
user will receive no visual notification about SMS being received.