Other than an Open Beta available to anyone, OnePlus also offers a Closed Beta program for its devices. In it, a small number of loyal fans communicate with OnePlus directly and give feedback on early builds of future software long before it's released to others. A few months after releasing the OnePlus 7T and 7T Pro, the company has now started a call for Closed Beta testers for the two phones, limited to a total of 250 slots.

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