Your Recovery Phrase
To import your wallet, you will NEED your 12 word recovery phrase (or Keystore/Private Key).
You can re-import your wallet by either re-installing the app or clearing your app data and then following an import method to recovery your wallet.
Or, Import a new wallet
Create a new wallet entry by opening the wallet selector at the top and "+ Create Wallet", or through the Manage Wallets screen, and then "Import Wallet". If you are importing a same wallet that already exists in your app, we suggest removing the old/existing wallet once you have confirmed that you have successfully restored the wallet and funds to prevent the wallets de-syncing with each other.
Both these options use the same import methods shown here: