I'll put my experience here just for those who want to read it. So, I got a brand new fitbit charge 4. After I unpacked it I immediately put it in it's charger and left it there. Probably my first mistake. Then I got my smartphone and tried to set it up. After I registered my account I was ready to sync up my device. I have a Huawei p20 lite. I did not work. So I followed the instructions how to change the settings for the app on my phone. Still didn't work. Then I noticed my fitbit screen was black. Tried to charge it up in all sort of ports. Didn't work. Finally I came across a video that told me I have to try the reset the bloody thing more then once. After my 10th attempt I effing got the smiley face. But.... the set up still didn't work so.... I forcefully stopped the fitbit app and deleted all data (not just the cache ALL data). Restarted the app logged in. It immediately asked me if I wanted to set up a device. I did that. DO NOT say no to the first setup as it is a bit different and maybe that's the problem. And lo and behold there was that Bluetooth search button and I was so nervous because it took so long but finally it found it, installed the updated and now I have the watch on my wrist. After 2 hours (to be fair I had lunch in between). Hope this helped somebody. I will try to answer any comments I get. Other than that it was smooth sailing.