That is what people told me too. Bad cable. Just got my new one in the mail, and I will test it out today. Somehow, I doubt it's the cable........ I have a google pixel.
The cable issue has been reported to be a poor quality one that comes with the quad - the one that plugs into the side of the remote. Using a different (and supposedly higher quality) cable that plugs into the USB port just beneath where the phone is mounted on the remote has solved the problem for lots of people.
Mine happened due to bad RC cable. Waiting for the replacement to ship out, but I'm not holding my breath for it to last without defecting. I wish they'd step up the quality on the RC cables.
The USB cable was to blame when the same happened to me. Dji onto a winner here as everyone is just getting a new cable online. Dji should be offering all mavic owners a better cable foc.