As a rule, smartphone makers who've ditched the 3.5mm headphone port haven't rushed to bring it back, whether out of technical necessity or simple pride. Huawei, however, might be the exception to the rule. OnLeaks and 91Mobiles have produced leak-based renders of the upcoming P30 that hint at the return of the headphone jack, nestled neatly at the bottom near the USB-C port.

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