Powerful A13 Bionic chip. The same chip used in iPhone 11 & iPhone Pro
3 Evidences
The phone will be a breeze to use while launching apps, playing the latest games or while using Augmented reality, thereby guaranteeing flagship level performance.
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iPhone SE 2020 - Technical Specifications - Apple
Because of A13 Bionic chip the phone is expected to get all the iOS updates for a long time.
Apple uses proprietary lightning cable, which means you can only borrow a charger or charging cable from someone who owns the same.
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Wikipedia - Lightning connector