When sending an sms on the dual sim A51, why can't I no longer see both Sim Card options to choose from? Like when calling, there's that 'always asks' option, instead of having one designated sim card.

Why does Samsung health only allow one time slot when recording my sleep? For instance, if I wake up around 3am and go back to sleep at 4am, does it account for that one hour of being awake or it records until that 3am?