For those wondering, I bought the Gear S3 LTE variant today, in order to replace my WiFi version Gear S2. First off, yes you can connect any S3 variant with the iPhone, you just have to download the beta ipa file from the Internet onto your pc first. I will include instructions and a link below. Second, the Gear S3 app for the iphone is still a Beta. There are little issues with the app, but nothing that prevents everything from working. So far, I get all my email notifications, texts (iMessage if my watch is connected to my phone via BT), and phone calls. Without the phone, texts and calls must be sent to the watches phone number or call forwarded from the iphone. Any questions, ask away. Pics of sizes between S2 classic and S3 Frontier attached. How to install: ** IF YOU WERE CONNECTED TO A GEAR S2 BEFORE, YOU MUST GO TO PHONE SETTINGS AND CLICK FORGET S2 BEFORE DOING ANYTHING ELSE. ** Now, Go to this link on a Mac or PC. Download the ipa file in the first post. http://forum.xda-developers.com/gear-s2/general/leaked-gear-manager-ios-iphone-7-t3499304 Once done, connect your phone to your pc and open iTunes. Open the ipa file or drag to iTunes, so it loads to your phone. Open settings on phone, go to General, then Profiles and Device Management and approve Samsung Electronics. Then turn BT on, so your phone can discover your watch when you turn it on. Turn your S3 on. Pair S3 with phone in BT settings. Now open S3 app. Connect new watch. If it doesn't connect the first try, turn off watch, turn watch back on and try again. Took me 2 attempts. Done.