The recommendation of League of Legends mobile skill upgrade is not outstanding.

You put the pointer on the skill bar+,don't click, it will be displayed.

If you want to improve your level, you have to participate in more games, and gaining experience through game settlement is the only way to improve your status in a short time. After all, the amount of experience gained in this way is unlimited. As long as you play enough, your level can be upgraded. Moreover, at present, there are many team reward cards given away in the game, which can double our experience gained through game signing and divination activities. In addition, there are some ways to gain a lot of experience at once. Open the taskbar at the lower right of the main interface, and then you can see many tasks, including routine tasks and challenge tasks, which can get active values after completion, and some tasks will give you some summoner experience to help us upgrade.