There is normally no cell phone signals when you hike on mountains. It’s highly recommended to have a Walkie Talkie with you to keep in touch with other people in your group, in particular for emergency.
You can find Walkie Talkie from many places like Walmart, Bust Buy, Fry’s, etc. Most people like to buy from Amazon, here is our recommendations.
Cobra CXT545：Buy Now
Motorola MH230R: Buy Now
Midland GXT1000VP4: Buy Now
For more choices, please visit Amazon: Walkie Talkie