Endurance and charging speed

Those who have been following mobile phone development for a while still remember the classics from Nokia or Motorola, which usually had to be plugged in once a week. Were the batteries better in the past? No. But computing power, energy consumption and displays were much smaller, and usage times were shorter. Today, smartphones are in constant use. They are even used to check the time, you are constantly "on". Endurance is extremely important.