Why are virtual mobile networks cheaper than the actual network?

Ivegotaquestion2

jbrassy said:

As an ID pay monthly customer, I can confirm that you can send and receive short code messages. Not sure if the same can be said of ID PAYG. Smarty do not allow short code messages.

Thats brilliant! Thank you. Ive had a good look around Immobile site and can confirm shortcode sms are facilitated so the Mrs can keep wasting money  with Andy Peters lol.
Looks like its ID for me.
Thanks to all for the help and info.

EnPointe

as others have said MVNOs   are   the  Easyjet and Ryanair of the market ,  where the main networks  themselves are like flying on the Flag Carriers 

expect ot be nickel and dimed by the MVNOs ,  espect to have a convoluted  remote ( likely webchat only ,or webchat and emails)   way of accessing custoemr service ,  rather than  riniging  the network or even going into the retail shop and talking to someone face to face who can pull the details up on the screen in front of you )

ballyblack

or even going into the retail shop and talking to someone face to face who can pull the details up on the screen in front of you )

Thats why I use Tesco MVNO. Excellent customer service