Be cautious
the reason I chose a store for buying my one plus is that I saw it says it will use the system from oppo (color os), but once I turn on the phone it's oxygen os, I like colour os more than oxygen os
Australia
the reason I chose a store for buying my one plus is that I saw it says it will use the system from oppo (color os), but once I turn on the phone it's oxygen os, I like colour os more than oxygen os