I live in a mobile network black spot where coverage is non-existent to minimal. Everyone who comes here has the same issue no matter what network they're on. It's got to the point where I can't use any mobile to make calls which is frustrating and sending texts is barely possible.
Therefore, I know there are ways of using wifi to make and receive calls but is there an app or setting that will allow text messages to be sent as well? The reason it has to be texts and not data is because the recipient does not have wifi or network data available to them.
Hope that makes sense.
edit:We have 2 android and 2 apple devices. Samsung Galaxy S6, 2 x iphones 5 and a Motorola G3.
edit 2: All our phones are on either O2 or another provider using the O2 network. As mentioned, none of the other networks improve on the O2 reception.