Someone at work asked me how you top up a Vodem stick.

I usually sign into my Vodafone account while on home internet and enter my Visa debit card details, then purchase the plan I'm wanting.

If you've run out of credit on your Vodem, can you still plug it in, open the text messaging application and free text a voucher code to 887, then text the applicable plan you want to the appropriate number? If so, I will advise the guy at work he can do it this way if he has no other access to the Internet like I would to top up my Vodem stick.