I recently replaced the defective battery in my Gear Fit. My device however no longer turns on. As far as I can tell I...

Bryan, Please make sure you're holding, not just pressing, the power button for at least 3 seconds. Simply pressing the button quickly does not boot your device. If this fails it may be due to battery failure. This may be the case if you have dropped/possibly damaged your Gear Fit recently. The battery may also simply have expended all of it's charge permanently. The estimated lifetime of the battery used in the Gear Fit (210mAh according to Gizmodo) is 1000+ "cycles" which is one complete drain from 100% to 0%. This translates to roughly two years for the average user. Extensive use (especially while simultaneously charging) can reduce this and cause early battery death. Either of these causes will require battery replacement which is covered here*. If you need further assistance, please do not hesitate to ask. Kyle

Hello Nathan, Issues with lagging and freezing can come from overtaxing your device. If you notice that your issues worsen after prolonged use of your device, this is most likely the issue. If you're touch screen is responsive enough try closing all running apps and programs. For alternative solutions, check here for our troubleshooting guide on screen lag. If your problem persists with no apps running, it's more likely to be your touchscreen is not responding to your input. Check to make sure your fingers and screen are clean and clear of obstructing substances (screen protectors may be causing the issue). Additional information regarding this is posted here as well. Let us know if your issue requires further assistance. Kyle