If I use findmyiphone to remotely clear my device will that prevent it from being activated?

I'm selling a broken (water damaged) iPhone and I can't clear it myself because I can't turn it on. The person buying it apparently can fix water damaged phones but they want to activate it when it's fixed. I want to know if I can set my phone to clear when it's connected to Wi-Fi or data (once they turn it on) and that won't prevent them from activating it. I don't want to send them a phone that will be useless when they get it but I also don't want to send all of my personal information to them if they can get it turned on somehow.

Please answer from experience

It has to be cleared by entering your password, so either you must do that, or you must give the password to someone else so he can do it (not a good idea). Just clearing the iPhone will not eliminate the need to enter your password to reset it.

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