Konami has finally released eFootball PES 2020 on iOS and Android, that you can download as a new game for 2GB, or as a 1GB update for PES 2019. The update includes new graphics via the change to Unreal Engine 4, updates kits for teams, new celebrations, updated players stats, new moves, and new goal celebrations.
Some of your own stats of PES 2019 will carry over, but all squads will be reset, meaning you will need to build a new squad from scratch.
If you are not familiar with the mobile version of PES, it is basically a free-to-play game, where you have to build your own squad to compete online. It essentially only includes the MyClub mode from the main game.