in my understanding you can allocate a contact to a specific SIM when you choose "ask first/every time" and then, when you want to make a call to a specific contact and you have to choose which SIM to use, you are able mark a check box like "remember this decision for this contact". But on my BV 6000 (with newest firmware20161011 and Android 6.0 Kernel 12th October) there appears a check box named something like "use this SIM for all calls" - and that is what the phone does:
Every time I try to mark and remember my SIM-card decision for business/private contact I´m just calling, the phone change the complete setting to "only use this or this SIM card for ALL calls", not only for the specific contact I want it to remember.
Do I operate wrong?
Thanks in advance,