For example, you can’t use an Apple Watch with an Android device, but you can connect a Fitbit (a Google-owned company) to an iPhone without issue. Contents Google Pixel Watch and Samsung phones Galaxy Watch: Setup Guide. The Galaxy Watch is a smartwatch that can analyse your exercise patterns, manage your health and allows you to use a variety of convenient apps for making phone calls and playing music. By rotating the bezel, you can access convenient features quickly and easily. You can also change the watch face to your taste. If you're going to use the watch without a SIM, it really doesn't matter what carrier the watch is from. Just buy it, set it up and connect to your phone through BT. You can still make and take calls through the watch while connected to through BT as well as send and receive text messages. What the LTE plan would do for you though is allow you to leave your phone at home and still receive calls, texts and use apps that require a data connection. There are shared number companion plans, standalone plans with calls/texts/data or data-only prepaid plans. You can charge a Samsung Galaxy Watch without the charger it came with, but you do need a charger. You have two options: use a compatible Qi charging station, or, if your Galaxy phone supports PowerShare, you can charge your Galaxy Watch using the phone. Note: Galaxy Fit models and Galaxy Watches running Wear OS cannot be used without a phone. If you have no phone, it's no problem! With certain watch models, you can still use your watch when it's solo. Before you set up a new mobile plan, you may be asked if you want to restore your watch's settings from a previous backup. It's obviously just a move from them to get more people to buy Samsung phones, since this is the best Galaxy Watch yet. I think you can use it without a phone once it's set up but you will need a phone for the initial setup. That's what I'm thinking of doing. I currently use an Apple Watch that I setup like this. Galaxy Watch. ECG Monitoring and Blood Pressure tracking are available through the Samsung Health Monitor app- only available on Galaxy devices. Customers in many countries have access to Samsung's vital blood pressure tracking tool. However, blood pressure tracking on Galaxy Watch for series is currently not available in the US. syRu.