To find your IMEI number on OnePlus, follow these steps,
- Slide down from the top and open your settings by tapping on the gear icon
- From settings menu, scroll down to the bottom and tap on about phone
- Then tap on status
- You will be able to see the IMEI number there.
- If you have a dual SIM phone, you can find 2 IMEI numbers there for slot1 and slot2.
These steps are similar for other Phones, like Samsung and others.