How long does the mobile phone battery charge for the first time?

When the first charge was over 10 hour, it was a long time ago when it came to Ni-Cd batteries with strong memory effect. Nowadays, all mobile phones use lithium batteries, which have no memory effect. So whether it's the first time or every time after, as long as the charger's full indicator lights up, or the mobile phone prompts "charging is over", it means that the battery is full and you can unplug the charger. In fact, regular chargers have the function of automatically stopping charging. If the battery is fully charged, it cannot be charged even if it continues to be charged.