While we endeavored to make this test as scientific as possible, make no mistake: you should take the results with a grain of salt. For starters, the data presented here presumes that our test treadmill was accurately and consistently measuring one mile during each of our walks, over a testing period that lasted several months. (We've been amassing the data on these products for a while.). And -- even if our testing was 100 percent accurate -- your real-world experience with these activity trackers will almost certainly not be. For instance, these devices can confuse activities like washing the dishes or lifting weights as "steps," because they're generally measuring the swing of your arm more than anything you're doing with your feet.

And, as always, these devices are subject to an endless array of software and firmware updates, in which the manufacturers are constantly tweaking and modifying measurements and data collection across the board, Each company uses its own algorithm to measure distance and no two trackers will give the same result, But perhaps the biggest takeaway is that the accuracy of the device is less arctic grizzly bear iphone case important than its consistency, If you stick with any one device, and it's 5 percent off every day, you'll at least have a record of your daily progress relative to your previous performance, (Your bathroom scale may not be providing your "actual" weight either, but if it's consistent, it should be letting you know if you're gaining or losing weight with each weigh-in.) The idea behind using these devices is simply to motivate you to walk more each day..

While some devices don't even include a calibration option, most people don't bother to calibrate those activity trackers and smartwatches that do include the feature. Unfortunately, the calibration method of measuring stride length isn't all that simple to perform. Apple's calibration technique, on the other hand, requires a 20-minute outdoor walk with your iPhone. I highly recommend you calibrate the Apple Watch if you care about accuracy. While the Apple Watch takes the accuracy crown once it's calibrated, it's also worth saluting the three devices that delivered the most reliable out-of-box results in our test. If you want to be certain of your exact distance and aren't interested in calibrating your device, the Garmin Vivosmart , the Samsung Gear S and the Garmin Vivoactive are your best choices -- for now.

Though Samsung didn't clarify exactly when it surpassed the mark, a "high-ranking" official with the company confirmed to the publication that it took about a month, Samsung said in April that it had hoped to ship 10 million phones in the first 26 days after they were released, That compares with 11 million Galaxy S5 units shipped in the first month roughly a year ago, In the last reported quarter, Apple sold 61.2 million iPhones, A strong start is critical for Samsung, which is pegging its hopes on the Galaxy S6 line to reinvigorate sales after Galaxy S5's lackluster performance led to declining sales, profits and market arctic grizzly bear iphone case share amid stiffening competition from the larger iPhone 6 and iPhone 6 Plus in 2014, While still the top smartphone vendor in the world, Samsung lost a bit of its swagger last year, but it's turning heads again with its new smartphones..

A number of factors may be contributing to the renewed interest in Samsung's flagship line. The Galaxy S6 employs more-premium materials than its predecessors and also includes wireless charging capabilities. Whereas the Galaxy S5 was viewed as an incremental update, this year's edition is more of a complete redesign. In her review of the device, CNET's Jessica Dolcourt found the phone offered " top-notch specs and a worldly look ."A strong start, however, doesn't necessarily equate to success. Though the Galaxy S5 had stronger initial sales than the Galaxy S4, sales ultimately fell short and were deemed a disappointment.