how do i change the phone number on my ipad

For clarity...

An iPad, whether a Cellular model or not, is not capable of directly accessing Cellular Voice or SMS/MMS Messaging features. An iPad with either WiFi or Cellular connectivity alone can only access IP-data services. If you have added an eSIM or physical DataSIM and Cellular plan to a WiFi+Cellular model of iPad, the number associated with the eSIM/SIM card is only used to identify your account for billing purposes. This number cannot be used for making calls or sending messages.

However, when either model iPad is used along with your iPhone, the capabilities of iPad significantly broaden to include access to Cellular Voice and Messaging services of the associated iPhone - relayed to the iPad over WiFi using Apple’s continuity features.

More information about Continuity and the relevant Cellular services can be found here:

Continuity

Use Continuity to connect your Mac, iPhone, iPad, iPod touch and Apple Watch – Apple Support

SMS/MMS Messaging

How to forward SMS/MMS text messages from your iPhone to your iPad, iPod touch or Mac - Apple Support

WiFi Calling

Make a call with Wi-Fi Calling – Apple Support

There is no phone service on the iPad.

iPads are data only devices.

Any phone number from your cellular provider is for billing purposes only.

MatchaMaria wrote:

the phone number of my ipad is different from my actual number. the phone number of my ipad is my mom’s. IDK WHY

The above reply is correct: some iPad models can have cellular data capabilities and a billing-related number, but no iPad has cellular phone capabilities. The number is for cellular billing, as all client devices connected to a cellular network will have an assigned number.

If you are looking to transfer who pays the cellular data and transitioning to a different number you are responsible for, contact your carrier.

If the phone number shown is associated with FaceTime, that’s a different matter and usually due to sharing an Apple Account, or transferring phones around within a group.

The phone number on the iPad isn’t a phone number you can call… the phone number links to your iPhone.

You have to ask your cell provider to change your iPhone number.