I am also currently going through all the different options of a new phone or tablet I could pair with my Gear S. I'd love a very small phone, or a phablet/tablet to leave at home... Still undecided on this. I am just getting tired of my aging Note 2.
I asked Smsung on FB and they are unwilling to tell you anything except Galaxy device on Android 4.4 as a minimum. I bought the Wifi only Tab 7 for that reason, and it won't even find the Gear S. When I asked them again, they pointed me to the ATT list of devices, and when I told them that ATT would obviosuly only list the devices
they sell, and none of the others, there was zero help from them.
I have been looking into the Alpha, which as Active said is not high end enough, into the smaller Tab S, which I don't like too much, and which seems to not be working anyway... and am now researching additional alternatives.
Anyhow, long story short, I am now researching
compatiblity lists posted outside of the US, since they get a ton of devices that never see the US. I found the attached list of compatible devices on the
German Tmo site, but would like to know if the
Galaxy Core 2 dual sim that is available on amazon.com is also compatible. Would you believe that Samsung is not able to answer this simple question when asked?!
You can buy the Gear S directly from Samsung (unlocked I assume) in
France and the
UK. Narry a mention of compatibility or even the need of a specific phone on the French page, and on the
UK support page, Samsung support either does not answer questions at all, yet leaves them visible and unanswered on the page, or gives out wrong info. Bizarre to say the least.
I love my Gear S to pieces, but find the unsupport Samsung offers for this device mindblowing.
ETA: The
Italian Samsung site actually lists compatible devices (available in Italy):
Galaxy Note 4, Galaxy Note 3, Galaxy Note 3 Neo, Galaxy Note II, Galaxy S5, Galaxy S5 mini, Galaxy S4, Galaxy S4 Active, Galaxy S4 mini, Galaxy S3, Galaxy S3 Neo, Galaxy Mega 6.3, Galaxy S4 zoom, Galaxy K zoom e Galaxy Alpha.
I had considered the K Zoom for a bit, but it's pretty large and heavy.