I need to have cellular option on my phone so I can use watch
Can anybody help , I need to connect my watch an phone wen the phone is off ,, but I don’t have a cellular option
Apple Watch Series 3, watchOS 6
Question marked as
Top-ranking reply
If your iPhone is powered off, then the Apple Watch has some capabilities. It has a few more capabilities if it has a WiFi connection, but some services do require the iPhone.
Please read the following, and pay close attention to the footnotes, as they have important information
https://support.apple.com/en-us/HT205547
Now if you are asking, do you have to have your iPhone under contract with a cellular carrier, then I do not think so, but some features will not work for the Apple Watch.
A Cellular Apple Watch Shares the iPhone's phone number, so if your iPhone does not have a cellular carrier, you will not have a a phone number to share. Also not all carriers support the Apple Watch, so you would need to have your iPhone using one of the following carriers if you wanted a cellular Apple Watch with a phone number
https://www.apple.com/watch/cellular/
All SMS/MMS texting REQUIRES an iPhone with a cellular contract. It does not matter if you have a GPS only or a Cellular, all SMS/MMS texting goes through the iPhone. Again read the footnotes in the first link I provided above.
Of course without an iPhone cellular carrier, you will not be able to make/receive phone calls. You can use internet based messaging services such as iMessage. You can get the weather. You can use Find My Friends, You can track your exercise, You can play music that has been transferred to your Apple Watch, You can use Walkie-Talkie, You can make FaceTime Audio calls, You can use the timers, alarms, etc...