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EE warns parents against giving children under 11 a smartphone
(www.theguardian.com)
This is a most excellent place for technology news and articles.
Don't they require smart phones to work though? All the ones I have had are all just BT devices which require a phone to do anything beyond tell the time
There are several cellular capable watches.
My Samsung watch works without a phone on Google Fi network. Watches get a free line.
On Google Fi the watch data "piggy backs" on the phone's data. You still need a phone + phone plan.