Some people buy a new phone, don't like it, and want to sell it the next day. If you do come across a seller with the same story and are selling your favorite phone, buy second hand phone ，don't hesitate to buy it.
Now, buying used equipment does have its own downsides, such as the trust factor between you and the seller, and if you don't understand the above, you can be scammed. So, if you've never bought used equipment, I recommend you bring someone who has experience buying/selling used items.
The best phones are those that haven't been used for more than 18 months. Phones receive up to two or three major updates, so buying a phone that's two years old or older means you'll miss out on updates.
The side effects of e-waste are dire, and it's a growing concern in both developed and developing countries because most of it goes untreated and goes unnoticed.
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