Texts sent to Czech Number - why?

Sorry probably been covered before (but I did search). I am in UK. I had installed Avast! on my phone using a Vodafone sim and then later on I switched to a 3 sim. Of course this sent unknown SIM installed texts to my Friend phone but I notice that on my bill there are two texts to a Czech number that have cost me (which I am assuming are to do with Avast!). I wasn’t aware that texts would sent to overseas number. Under what circumstances do texts get sent to this Czech number? I am concerned about running up text costs that I am not aware about - especially as I tend to flip between SIMS. I also notice that on my online Avast! account it says my latest SIM is untrusted even though a) I have ‘dialled’ my pin code with the new SIM in and b) I am pretty sure I got a message or notiication that said this was now a Trusted Sim?

Thanks

hi

to communicate the trusted change for your sim, just go into anti-theft and disable / enable it again. This should push the new state to the server.

Regarding SMS: when you registered your account, there was a BIG dialog box informing you about the SMS :-). The SMS is sent to communicate the new phone number to our servers. We’ll be setting up SMS gateways in UK very soon, so then it will get better for you. Also the next program update will optimize SMS usage (send SMS only once per SIM card disregarding on how often you change it later on).

regards
Reinhard