If your phone is completely dead, it will not register a missed call. When a phone is dead, it means that it is not powered on and cannot receive any incoming calls or notifications. Therefore, it will not record any missed calls in its call log [1].

However, it's important to note that some phone providers may have different features or settings that could affect this. For example, some providers may send customers a text message with the time and date of a missed call, even if the phone was off at the time. But this would depend on the specific provider and their notification features [3].

In general, if your phone is off or completely dead, the missed calls will not be registered on the device itself. However, you may still be able to see missed calls in your provider's call history or usage history, especially if the caller left a voicemail [3].

Learn more:

1. If my phone is dead does it still register a missed call? - Quora
2. Show missed calls when phone is off? - Apple Community
3. Solved: If phone is shut off, will missed calls be display... - Community