One the best phones of last year, the OnePlus 6T marked a new chapter for the Chinese company. Part of the progress involved a deal with T-Mobile, which came with its pros and cons. Since it's a different SKU from the international dual-SIM variant (such as you'd buy straight from OnePlus), the Tmo version is excluded from things like the Open Beta program. But some savvy people over in the XDA forums figured out a way to rebrand the Tmo 6T to the international version without unlocking the bootloader.

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