I personally have an apple watch (which I also purchased here on Overstock) because I have an iphone and together they are super convenient! However, I also have the fitbit alta that I wear on my other wrist to keep up with my fitbit friends and now my boyfriend as well. I purchased the Blaze for my boyfriend as a birthday gift. I know that he has some sort of Samsung cell phone, so I knew that the Blaze would be compatible. Now I have had 2 fitbits that I have linked to my iphone and both times it was a snap to set up. I did notice that my boyfriend had to take a few more steps and it took much longer with the Samsung than it did with the iphone. Regardless, my boyfriend loves his Blaze! Both he and I work in law enforcement and having a watch that can alert you of a phone call or text message that you can actually read without having to pull your phone out is awesome! I also purchased the stainless steel band for him and he loves the fact that the bands are so easy to change up.