If you searched for Stackwallet cloud sync setup, you deserve a straight answer rather than a risky workaround. Here is how it really works — and the safe way to get your wallet on multiple devices.
Custodial apps can sync across devices because a company stores your account — and effectively your funds — on their servers. Stackwallet is deliberately the opposite: it is non-custodial, so your keys are generated and held locally on your device and never uploaded. That is the entire point of self-custody. It also means there is no key cloud-sync feature to "set up", because syncing your keys to a server would reintroduce exactly the risk that a non-custodial wallet exists to remove. This is a feature, not a limitation.
You can still have your wallet on more than one device — you just do it securely:
Record your recovery seed phrase on paper or metal and store it offline. This is your portable, secure "backup" — not the cloud.
Install Stackwallet from an official source on the other device and restore from your seed phrase. Your wallet appears there too.
For convenience data like labels and address-book notes, use the app's own backup and restore feature — never your seed in the cloud.
Protect each device with a strong lock, and keep your offline seed backup private. The fewer places your seed exists digitally, the safer you are.
Not in the way a custodial app does. Stackwallet is non-custodial, so it does not upload your keys to a cloud account that syncs across devices. Your keys stay local by design, and you move a wallet to another device by restoring it from your recovery seed phrase.
No. Storing your seed phrase in cloud storage, a photo or a note is risky, because anyone who accesses that cloud can take your funds. The safe practice is an offline backup of your seed phrase, kept private and never uploaded.
Keep a secure offline backup of your recovery seed phrase, and restore your wallet on any device from that seed when needed. This gives you the same outcome as sync — your wallet on multiple devices — without exposing your keys to a cloud breach.
Skip the cloud for keys. Back up your seed offline and download only from official sources.