1, the two systems save almost the same amount of electricity, while the latter does not improve much;

2. There is almost no update of 10.3.2, which is not much different from the previous version of the system. It's just BUG fixing and security improvement. There is no difference between fluency and power consumption, which is similar to the previous version.

3. Although there is little improvement after the upgrade, it is better to upgrade. The upgrade steps are as follows:

First, open the system backup, and back up what needs to be saved;

Then, click the system update software that comes with the mobile phone;

Finally, follow the prompts to update.