You don’t have to make watch phone, they are available from China (not your favorite country ,for about $35 or less, not sure if they are 4G capable, but GSM.
Check: tinydeal.com gearbest.com tomtop.com
Lots of gadgets at very low prices and free postage on most.
Enjoy your shopping
Ps. not sure when Trump’s tariffs kick in, still veerry cheap. Usually takes up to 4 weeks to arrive, no good if want it yesterday, best to go to a mall and pay x5,or apple store x10.
GT