Wherever possible, we only use direct, or 1-hop connections. This means that you are getting the highest quality SMS delivery available to the market. Generally, we’d expect messages to arrive in a matter of seconds; an SMS message typically takes about 10 seconds to arrive on a handset. if the receiving mobile number is reachable and correct, but this may vary depending on the country (going up to 30 seconds for example). As there are a lot of factors and variables that can impact this though, it's hard to give a specific delivery time number.