The highlight of the Vivo NEX Dual is its two displays. In addition to the traditional screen on the front, the NEX Dual has another AMOLED panel on the back. The latter means that you can take selfies with what would typically be rear-facing cameras without the need for dedicated front-facing sensors or an intrusive notch. Read on to find out how well this concept works and how the NEX Dual compares against other flagship smartphones.
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