Wifi status has nothing to do with talk or text but when I had my iphone 4, cellular data had to be ON for texts to send, even though i did not have data.
It's a great phone, 6" screen, dual sim card, great camera, i have had no issues with this phone, except, someone sat on it, and cracked my screen, still works tho....
Android phones - go to settings, scroll all the way to the bottom, choose "about phone" then select status, then select SIM status. Phone number will be displayed here. Also here is a link for other retreival methods https://www.wikihow.com/Get-Your...