Looks like Feather Wallet will develop a "skip sync" feature. This is useful if you know you haven't received any TXs since the last time you opened the wallet (e.g. you didn't buy any Monero recently): https://ccs.getmonero.org/proposals/tobtoht-feather-dev-2022-1.html If this is successful, maybe it could be ported to mobile wallets (Feather Wallet is open source). If you receive TXs regularly (e.g. online store or donations) you would still need to fully sync, but upcoming "view tags" will make this faster.

Sync times is a trade-off for strong cryptographic on-chain privacy, that hides senders, recipients, amounts, balances and TX history from third party observers (by default and for all transactions).