DO I NEED A CERTAIN PHONE MODEL TO BE ABLE TO USE THE BUTTON?
The answer is yes. Your smartphone must run on iOS or Android and must have Bluetooth 4.0, 4.1 or 4.2.
Please check the list below or with your phone manufacturer.
iPhone
iPhone 4s
iPhone 5
iPhone 5s
iPhone 5c
iPhone 6
iPhone 6 Plus
iPhone 7
iPhone 7 Plus
Android (OS required: Android 4.3)
Samsung
Galaxy S3
Galaxy S3 mini
Galaxy S4
Galaxy S4 Mini
Galaxy S4 Active
Galaxy S5
Galaxy S6
Galaxy S7
Sony
Xperia E3
Xperia M
Xperia SP
Xperia T
Xperia TX
Xperia V
Xperia Z
Xperia Z1
Xperia Z1S
Xperia ZL
Xperia ZR
Xperia Z Ultra
Xperia Z1 Compact
Xperia X
Xperia Z5
Xperia XZ
Nexus
Nexus 4
Nexus 5
Nexus 5x
Nexus 6P
Nexus 6
LG
G Series
G2
G Pro
G Pro2
G Flex
Vu 3.0
Optimus Exceed 2
Fuel
L35, L40, L65, L70, L80, L90
F60, F70
Realm
Tribute
Volt
VU 3.0
Motorola
Moto E
Moto G
Moto X
Luge
Droid RAZR M
RAZR HD
RAZR Maxx HD
Droid Ultra
Maxx
Mini
HTC
One Series
Max
Mini
M8
Butterfly 2
S
Desire (510, 516, 601, 610, 616, 816, 820, eye)