Same account on different phones and emus at the same time

NO MORE BIND CODES

Root needed, install Magisk on your phone, uninstall it later if you wish.

However, by using Magiskhide, you can have root and FGO running at the same time.

1. Install titanium backup on where your FGO account currently located at.

2. Backup FGO via titanium backup.

3. Copy /sdcard/titaniumbackup/FGO_RELATED_FILES to another phone/emu.

4. Use titanium backup to restore your account files on that machine.

5. NO MORE ACCOUNT LOST. YAY.

/data/data/com.aniplex.fategrandorder/files/ if you're interested. authsave.dat, authsave2.dat and friendcodesave.dat are the minimum requirements of account backup.

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Appendix: The complex way if you knew about linux.

https://www.reddit.com/r/grandorder/comments/6bn8hr/on_fgo_savefiles_or_how_to_moves_account_without/

https://www.reddit.com/r/grandorder/comments/6oopx9/recover_memu_account_and_set_new_bind_code/?utm_source=reddit&utm_medium=usertext&utm_name=grandorder&utm_content=t3_6bn8hr

You must chown / chmod after copy/paste, or the app will refuse to run. 600 for authsave.dat and authsave2.dat. You should not include masterdatacaches and library folder in your backup.