RCS on phones

I had forgotten that RCS messaging use Wi-Fi or data so no SMS or MMS charges.

The Samsung S5 runs Marshmallow 6.0,  RCS needs Android 5+. RWG mobile SIM ending 932 Balance £10.75p.  The internet data is now working. Fails to send MMS but SMS texts incur no charge. But no RCS even though it is enabled in Samsung Messages.  Tried using Google Messages + Carrier Service but says not compatible.

Put the RWG SIM in the IMO Q4 Pro phone running v9 and RCS is available in G-Messages.

O2 Classic SIM

The O2 SIM in the IMO Q4 is RCS enabled!