Here is screenshot from adding sender to contact list. You can see that it goes with a string in place of mobile number (this cannot be done in other way).
The behaviour in r23 is a bit different - only senders that match the contact will have an avatar as the contact. Previously adding even one such a sender to any contact was ending up in assigning same avatar to all alphanumeric senders. Unfortunatelly I still cannot have separate contacts for this kind of SMSs while having many of those (banking, comercials, authorization, ...)
Hope it is more clear now.
Here is screenshot from adding sender to contact list. You can see that it goes with a string in place of mobile number (this cannot be done in other way).
The behaviour in r23 is a bit different - only senders that match the contact will have an avatar as the contact. Previously adding even one such a sender to any contact was ending up in assigning same avatar to all alphanumeric senders. Unfortunatelly I still cannot have separate contacts for this kind of SMSs while having many of those (banking, comercials, authorization, ...)
Hope it is more clear now.