Huawei's P30 Pro has already been spotted on Amazon, but you can't buy it
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3.5mm Headphone Jack AUX Splitter Adapter and Charger For iPhone 12 11 XS X 8 7! | eBay
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Cherie Type C Headphones Adapter 3.5 Dongle Charger For Oneplus 7 Pro Huawei Type-c to 3.5mm Aux Audio Jack Splitter Charging - AliExpress Cellphones & Telecommunications
Amazon.com: Dual Sim Adapter
iPhone Dual SIM adapter with 2 phone numbers active at the same time for iPhone - 2Twin Box | SIMORE.com