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OK, both phones are now in the same WiFi. The Samsung S7 has always the Signal beta version, the Samsung S5 Mini the regular version. Problem: S7 can call S5...
This is all so buggy!!! I tried the same with the mobile network, WiFi deactivated. No connection at all. And messages from S7 to S5 Mini arrive quite fast, but...
It seems to work now in both directions both with WiFi and mobile network. Messages also are sent and received immediately. [S5 Mini log](https://debuglogs.org/8ca369bbdb71ba6f6df7e304f60567dce46cdfa36b3ee971c1a7010b714a072c) S7 log still not possible, it...
Still seems to work in both directions after restart of S7. The connectivity seems to be somehow established.