Android alpha wallet this far is good, but need more speed to sync with the network, but for send and receive is fast less than 10 confirmation. I hope i can trade LTK in android just like coinbase did... in the future it will be come true....
The latest version will use checkpoints which will be generated and downloaded from the server - the sync on a new or refreshed wallet need only be from the latest checkpoint
The latest wallet will sync 100+ blocks per second - at 2 per minute that is about 1 second per hour disconnected
The alpha version scanned from the genesis block and was much slower - it took hours on the first install. That is a thing of the past in the latest version which will sync in around 20-25 secs per day since last server checkpoint - this sync is only needed on the first wallet setup. When i grab my phone it is generally in sync in about 10 seconds
One reason for this is the 30 second block time. Litecoin has 2.5 mins, Bitcoin 10 mins, Litkoin 30 seconds - the android wallet is a modern SPV wallet which does not need central servers to operate normal - it just uses regular nodes. The higher block frequency makes block syncing more difficult than other coins
The benefit of the short block time is, however, that the transfers are very fast. This can make interactive payments viable even without Layer 2 solutions (lighting)