First of all, do not panic. When you installed Savl, you would have been presented with your recovery phrase comprised of twelve to twenty-four randomly generated words and asked to keep them safe. On the basis you did this, your wallet and assets are fully recoverable.
When you find your phone or get a new one, simply install Savl and select “I already have a wallet,” and copy and paste your 12 to 24 words to recover your account and assets.
Note: you are the only person with access to your recovery phrase. Savl does not store this or have access to it. Your recovery phrase is the key that opens your private vault containing your wallets and assets.