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You should contact the game's development team and tell them about this idea. Maybe they will give you the 2nd game for free 😂.

I've bought a used phone before and I know exactly what you mean, it drove me crazy. I had just bought a new phone and the battery only lasted 5-6 hours. As you said in your article, I don't want to carry a charger with me during the day. My goal is to buy an iphone 11 and see if I can get it.