My strip led light don’t synchronize with iOS app

You can have a try with connect with an Android phone and update firmware of the lamp. And if you already have the latest version, please refer to:

Sorry for the issue, please let us know which step do you stuck?

And at last please use another phone to setup a hotspots with 4G network and try connect the bulb to it, I want to make sure if the bulb is ok. Thanks!