@nagnath.redewad, welcome to our Fitbit Community! We appreciate your interest in the Fitbit Versa 2.
Regarding your inquiry about the compatibility of the One Plus 7 phone, I'm afraid that this device is not in the Supported devices list. There are times that non-supported phones work with Fitbit devices and the app features but we don't guarantee that it will work with this device specifically.
I'd like you give your vote to this Feature Suggestion, which requests compatibility of this device. The more votes this request gets, the more chances it will have to be reviewed by our engineering team.
We appreciate your patience and time with this.
I'll be around if any question arises.
Community Moderators ensure that conversations are friendly, factual, and on-topic. We're here to answer questions, escalate bugs, and make sure your voice is heard by the larger Fitbit team. Learn more
Best Answer