Mostly Smartphones work with enTouch wireless. Here are some of them:- Alcatel 1, Alcatel Go Flip 3, Alcatel One Touch Evolve, Blu Tank Xtreme, Coolpad Snap 4, Kyocera DuraXV Extreme, and LG Rebel 4.  You can visit "https://entouchwireless.com/hearing-aid-compatibility/" if you are looking for hearing aid-compatible devices