A.) This is the fastest trick i use for Re-roll Gacha Guide
So, you don't need to clear data apk from phone and re-download.
After "Delete User Data" just click "Start" and make new one again.
B.) My Advice : After click "Start" just skip the tutorial. Then click on "Gift" menu to earn 13k Diamonds for Gacha.
Important : DO NOT USE ALL OF YOUR DIAMONDS at gacha.
Just use 3x gacha at max. ( So, you still had 4k Diamonds left for buying Energy or Skip Chance at Story )
Looking for 5 UR Units or Ships. If you didn't get 5 UR on 3x gacha then use Option "A" at above to re-roll.
C.) If you got 5 UR from gacha, then Link your data.
But first, you need to created account from original website SD G Gundam Generation ( you can search it from google ).
After you created, they will sent email verification.
Then back to game, and see on top left corner. There's link data menu, click on there.
Enjoy...
Hope this will help users here
@Yunana24