Vodafone's new PAYG plan will cap your bill at £1 each day
 

Pay-as-you-go smartphone plans haven't changed much in the last few years. Calls, texts and megabytes are priced individually, putting the emphasis on you to manage your monthly spend. Some networks, such as O2, offer discounted "bundles," but otherw...

https://www.engadget.com/2017/10/20/...s-you-go-1-uk/