Use a PC save editor (like XCOM 2 Save Editor by Zyx). Transfer your savegame file from Android to PC via USB, edit the resources (Supplies, Alien Alloys, Elerium), and transfer it back.
Levels up every soldier in your barracks by the number specified. HealAllSoldiers Instantly heals every soldier in your roster to full HP. ToggleFow Toggles the on or off to reveal the entire map. RemoveFortressDoom [Amount]
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While in a mission or on the Avenger, tap and hold the top two corners of your screen simultaneously.
Note: This only affects new recruits. Existing soldiers require a save game editor. Use a PC save editor (like XCOM 2 Save Editor by Zyx)
If you own the PC version of XCOM 2, you can use it to cheat on your Android save.
XCOM 2:All console commands and IDs [WOTC] - Steam Community HealAllSoldiers Instantly heals every soldier in your roster
Because the save structure is identical (Feral did not change the core logic), this works flawlessly.