I use things until they break down permanently, so have had only three mobile 'phones in 16-odd years. I only use one for texting, occasional calls and taking pictures, not going online.
When the camera on the current 'phone failed, apparently irretrievably, I bought a new basic (2G) mobile 'phone, expecting to be able to put my existing PAYG SIM card into it - but then discovered that the new one only takes microSIM cards (of which I'd never previously heard). So, although I can transfer my mobile number to the new 'phone, I can't then use up the credit balance on the old SIM account.
Since my landline provider charges ridiculously high rates for daytime calls, the new EE network-based PAYG offering from 1pmobile.com looks very attractive. Although it claims to have no contract and to allow one to roll over any unused credit, it does require that one top up at least £10 at least once every 120 days - and I don't currently use £30 mobile credit a year, even paying Virgin's much higher call charges.
What would people advise that I do?