I had a Huawei phone that when you set an alarm and then switch off the phone, the alarm will go off. If the battery is removed and put back, the alarm won't go off. And, all the Samsung devices I used don't do that.
I vaguely remember back then that they used to go off, nowadays I thought I was crazy thinking they did go off and I was thinking around the time I had the S4 but could be earlier when I was using the Galaxy Ace. Using your Huawei example, it means that when the batteries were still removable they would be able to go off therefore nowadays they don't 🤔
