I had the charge 2 for months and it tracked great, and my resting heart rate was 60 bpm. A few days ago, I got the Ionic and my resting heart rate is now 78, up 18 bpm in a couple days. I got 8 hours of active minutes yesterday despite not being active that long because the heart rate readings are almost always 100+, even while resting. I am seemingly unable to get my sleep insights because my heart rate is so high it cannot track or understand my sleep stages, and when I woke up this morning my heart rate was 115. My average calories burned has gone from 3000 to 6000 in two days, and it is clear that it is inaccurate. I also have worn the charge 2 I used before while wearing the ionic, and the readings seem to be at least 20-40 bpm off with the ionic having higher reading. I have confirmed its inaccuracy with the charge two, manually taking my heart rate with my pulse and through a different brand chest strap heart rate monitor that all say about the same readings that are 20-40 bpm off from the ionics readings.I have followed the instructions on the fitbit website to both restart and shutdown the Ionic, and I have charged it multiple times. It seems to be more accurate right after restarting, but eventually it becomes inaccurate again. I factory reset my ionic and then follow the directions to update and set it up again. I did this twice, and it was still found to be inaccurate yesterday and today, using the same methods I mentioned before. I have yet to be given any way to fix this, despite several chats with support and as of right now it is an ongoing investigation.
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