Any that's over two years old. I'm very frustrated with the battery on my Samsung S21. Smartphones now improve at a glacial, minutely iterative pace, so for th

Any that's over two years old. I'm very frustrated with the battery on my Samsung S21. Smartphones now improve at a glacial, minutely iterative pace, so for the first time, I see no compelling reasons to upgrade -- except due to the total lack of battery health management, the battery is by now basically ruined. I'll try for a replacement.