In a separate post a few mins ago you said you have the SMR-945u that's a LTE version and isn't included in the beta at the moment
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As @GaryB82 mentioned, your watch has to be Bluetooth model (LTE models with no Carrier plan are ineligible) in order to participate in this Beta. (SM-R960,950,940,930 models)
Unfortunately, we don't have further plans with LTE for Beta as of now but will keep you updated in the community forum as soon as we are ready to launch.
