I have a Galaxy Fit watch I bought about 6 months ago. Up until yesterday, the battery life was superb. On heavy use days, it might drain to 75%. On lazy days, it was still in the 90s at bedtime. I took an app update yesterday and now it's draining super fast. I got down to 2% at dinner time last night. It's at 36% at 2pm now. I saw some similar issues on the Gear watch mentioned, but the Galaxy Fit doesn't have its own GPS or wifi to turn off.
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