Bests & Worsts Reviews from Amazon

I have never felt a need to write a negative review more than I have for this product. This has just been an awful experience for me, to the point where I will never own another Jawbone product. Even if one was given to me as a gift, I'd throw it out. I've gone through multiple Gen 2 Up bands. The reason being is after 6 weeks, they just stop working. There is no gradual decline or indication that it will die. They just die. I've gone through the RMA process, where they will make you do multiple resets of the device and then will send you a replacement after you send them back the broken band. The new one will come, work OK for awhile (notice that I didn't say "well"), and then like clockwork, at about the 6 week mark, it just stops working. When the band was working, my results fluxuate between extremely precise to so inaccurate I don't know what it's doing. It wasn't uncommon for it to just disappear during workout mode. I'd have a 45 minute workout, and there would be a 15 minute window in the middle of it where it didn't record anything, even though my movements were identical before and after the blackout. If you call Jawbone about this, they'll tell you it's you, and you should do a soft reset of the device. The sleep mode is nowhere near accurate, especially when I compared it with a Lark. It'll have me in a deep sleep when I'm in bed, reading a book, may even get up and get a glass of water, so there is plenty of movement. It doesn't detect this, I'm in deep sleep. However, when I am asleep, I get lots of awake time and footsteps captured. I'm pretty sure I'm not sleep walking to the extent of 1500 steps. If you call Jawbone about this, they'll tell you it's you, and you should do a soft reset of the device. There is a calibration feature that is supposed to make the device more accurate. So I got on the treadmill and walked exactly 1/2 mile so I could use that to calibrate. The band detected that I walked much greater than that, and when I was able to "adjust" the distance for the walk, the lowest option they offered was 1.2 miles. Yet the number of steps it counted was pretty close to what I was counting in my head. It must think that I am 9 feet tall and my strides cover a great distance. I didn't bother calling Jawbone about this. By this point, I know they are of no help. I had a band that wouldn't even accept a soft or hard reset. I tried this on one before I called, knowing they would tell me to. If you call Jawbone about this, they tell you that nobody else has experienced this, but they will begrudingly replace it. Yet their forums are full of people who have this exact issue. After my most recent band started vibrating and wouldn't stop until the battery died, I've decided I had enough. There isn't anything out there yet that tracks movements, sleep, and provides an awesome workout and food journal really well, but that doesn't mean any of us should settle for a product that is so flawed that I spend more time on the phone with customer support than I do analyzing the data it gathered. Here's to hoping that Fitbit Flex is a little better when it makes it to market.