====== hidden SIP settings ======

thanks to https://www.reddit.com/r/homelab/comments/qyrt7k/cisco_7962g_phones_with_fpbx_and_chan_sccp/hlj6d0l?utm_medium=android_app&utm_source=share&context=3

download [https://play.google.com/store/apps/details?id=de.szalkowski.activitylauncher|Activity Launcher]

Launch activity `com.android.services.telephony.sip.SipSettings`