Installed 3CXPhone from Play.. version 3.0. On a new v12 config directly attached to the WAN on one of our statics.. it works fine. However, I configured a tunnel connection for Out of Office mode (we firewall inbound SIP to our trunk providers..).. no audio received by the PBX from the phone. First tested on *777. Sanity checked by a cell call into my extension.. one-way audio only.. from cell to softphone.. nothing "from" the softphone. Okay.. so being a VAR and MSP I manage multiple instances.. added a profile for somebody else.. same deal. That client does NOT have SIP firewalled (people with iPhones/iPads travelling overseas..).. again worked like a champ. Clearly looks like either a config issue or a bug with 3.0. So.. I still had the "3CX for VIOP providers" installed. 2.0.5. Added a profile.. *777 works like a champ on it.. WITH tunnel enabled to "our" connection. Do we have a bug in 3.0 on Android for my Samsung? Will test Monday.. boss has the same model/carrier and others have other Android models.