How do I get my Fitbit repaired or replaced under warranty? - MyHealthyApple
Amazon.com: GOSETH Compatible with Fitbit Charge 4/Fitbit Charge 3 Bands with Case, Silicone Strap with Shatter-Resistant Protective Frame for Fitbit Charge 3/SE/Charge 4 and Special Editions (Black&Grey) : Electronics
My Charge 3 did this today. Warranty was up three weeks ago. Fitbit had every right to deny to replace it, but 10 minutes with tech support chat and they are shipping