Hi guys. The wife's been using her new LG Optimus phone for the last few days and has downloaded several free apps as well as trying out things like Google Maps. She's currently on the Virgin PAYG 'original' tariff which IIRC ought to be charging 30p a day for internet access although she's either going to try the £5pm unlimited web add-on or possibly move to a monthly contract with data allowance of some sort in due course.
Anyway, yesterday she checked her balance and 'last call' and was a) surprised by how much credit (c. £4) she'd used over the last few days (she's not made any calls or texts, just used the web) and b) to be advised that her last usage was a GPRS call @26p.

She hadn't made any calls so is this charge due to her connecting to the web and very briefly using one of the apps? If so, is it part of the 30p daily charge or in addition to it? We're not sure where the money debited from her balance has gone but I'm wondering if, although she didn't realise it, one of the free apps she's been using has been costing her money in some way every time she uses it and this is in addition to VM's 30p charge - hence the £4. Could this be the case?
Sorry if these sound like silly or very basic questions but we're both new to all of this and it's my latest job to sort it all out for her.....