If you reinstall your phone, reset a bulb or just replace an ESP that has stopped working, ha assigns it the right entity name but with a ‘_1’ (or ‘_2’ or ‘_3’… ) on the end. (for obvious reasons)
This way you end up having a cluttered entity list AND you have to rename all the references to that entity in your configuration (automations, templates, lovelace etc).
It would be nice to be able to either merge two entities like these:
- device_tracker.iphone_6s
- device_tracker.iphone_6s_2
or just to be able ot tell ha that there is only one - delete the other one and assign everything to the original entity