Well the quick answer to that is no, they do not care about 0800 numbers they will of course take anything from you that they can but are they really worth that much??

Value

Your phone is very valuable to you but to the average criminal it isnt worht much at all. Even the bigger phones like the iphone are not worth much second hand. Mind you a profit on nothing is a lot to a criminal so you can see why when they are desperate for money that they do this.

Problems

They do not care who they target so watch out where you flash your expensive phone around. The people that commit these kind of crimes do not target specific people like the older generations and women but target anyone with a fairly decent phone. Drugs are often the reason why people will steal a mobile phone, sell it on to fuel the addictiton that they have.

Too Far

Because these criminals seem to be very desperate they often will attack you ifyou do not give up the phone. Although the numbers of deaths have decreased it still happens. It mostly occurs when people are really trying to resist being mugged. The best piece of advice is to let them take it, then call up the phone company to get the phone blocked.

Protect The Phone

If you have a smart phone then there is no way people can get in to it as you can lock it with a password. It is crucial that you do this as often things like bank details and personal information are all stored within the phone itself.

So although a criminal will not be interested in fax to email or premium rate phone numbers they could be after your mobile phone so just watch yourself.