What is a wallet upgrade?
Your wallet is powered by code or "smart contracts", that run on the Ethereum blockchain. When we make new capabilities available for your wallet, you need to upgrade it to take advantage. When you tap the Upgrade button, you will deploy a new version of your wallet on Ethereum, which your Argent app can then use.
Why doesn't it just auto-update through the App Store / Google Play?
The app on your phone is really just a "remote control" for your wallet, which is stored on-chain.
Updating the app doesn't in itself upgrade your wallet. Only you, using your phone, have the authority to upgrade it, and must do so explicitly (by tapping the Upgrade button).
We cannot do this for you.
What if I don't want to upgrade?
In future, we intend to enable an opt-out, at least for certain upgrades. And for now, to enable us to move and improve quickly, you will need to upgrade if you wish to continue using your Argent wallet.