How to say “My phone's dead and I don't know anyone's number by heart.” in Japanese

In Japanese

スマホの充電(じゅうでん)が切(き)れちゃったけど、誰(だれ)の番号(ばんごう)も覚(おぼ)えてないんだよね。

Sumaho no jūden ga kirechatta kedo, dare no bangō mo oboetenai n da yo ne.