Noun
けんがい
しまった！兄ちゃんが俺の携帯に電話するって言ってたのに、ここ圏外だわ。
Oh no. My brother said that he’d call me on my cell, but there’s no reception here.
The range is outside of the range, meaning you're out of range.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.