I have a very ancient dumb phone - a Nokia 1100. It has served me well on a Virgin PAYG SIM for some 15 years and still puts modern smartphones to shame in terms of its sound clarity. The new SIM arrived today, and the phone doesn't want to know - just gives a 'SIM NOT VALID' message, no matter how long it is left.
The VM simhelp website doesn't know about this model either (understandable, it's old, but at the same time it did sell 1.2 BILLION units in its day, so there must be quite a few still about). I love it because over the last 15 years it's cost me a grand total of about £60 to own and run. I don't make many calls...
Is there any way to get the old phone to work with the new SIM, or do I have to join the 21st century and buy some over-specc'd device at many times the cost? Or could I buy a cheap update on my Nokia, such as a model 105, and just put the replacement SIM in it?