I believe it's the Slashgear review of the Titan that mentioned something about a delay in data updates with most apps. For instance, that it takes like 10 seconds for twitter to update. Is this a known issue?
I think it is the same as any phone - dependent on 2 things -
1 - The app.
2 - The data connection.
I certainly found no great difference compared to any other smartphone or tablet.
If I am using wifi it is instant, if I am out and about it depends on signal - H is fast with no delay, switch to G takes a bit longer - same as any other device as far as I am concerned.