dev4223 I believe the idea of Smart Charging is to prevent your phone from charging all the way up to 100% immediately. You can leave your phone charging overnight by supplying minimum current starting at 80%, then there comes to the thing you mentioned in which the phone can resume charging before/after the alarm. I have only tried it once.
However, smartphones are just as “smart” as they are these days, once the phone reaches at full, current will no longer pass through.