I've gotten pretty fast at shooting out SMSs on my cellphone, however there's a typing bottleneck whenever there are two consecutive letters that use the same key.

For example, "gh" is a common culprit. I have to hit 4 once to enter "g", then pause for literally an entire second while the letter select box disappears so I can hit 4 again twice to enter "h". Is there a way to get around this pause?