Calls and SMS to other onoff App users are free!
Calls and SMS to non-onoff App users will cost you...
All calls both to and from onoff Numbers are actually outgoing calls and deducted from the available balance on your sim card.
If you use " Answer by VOIP" feature, incoming calls will be free of charge.
International calls will require onoff Credits. These can be purchased from within the app itself.
You can see the cost of calling &messaging to each country inside the app.Open the side menu, press add credits, and from here you can see the cost of calls and SMS.
Incoming calls and SMS do not require credits.
You don't need to use onoff credits for calls and SMS to other National Numbers( for example, calls & SMS from a French number to other French numbers,a UK number to other UK numbers,.....etc)
IF YOU RUN OUT OF CREDITS YOU WILL NEED TO PURCHASE MORE IN ORDER TO MAKE OUTGOING CALLS AND SEND SMS TO INTERNATIONAL NUMBERS.