Do you think he is still interested, just a yes or no will do, thanks?

It seems that you have answered your own question. "I've just got credit on my phone" this could be the reason why he hasn't been in touch. If he's shy then he may be like me, I was shy and still am to a certain extent and still don't know how to intiate a conversation with someone of the opposite sex, so there, many people are like this but talk a different talk to their mates or friends. Sorry you only wanted a yes or no so the answer is "Yes" Good luck