If you wish to stop receiving text messages on your iPad, do it only on that device. Settings > Messages > Send and Receive > uncheck email and phone number in Send and Receive. That’s all there is to it.
The messaging app cannot be removed. It’s a core iOS and iPadOS component, so it can’t be deleted. In the iPhone or iPad cloud account settings, go to Messages & Communications and deselect iMessage and message forwarding.
If you let me install my iPhone on your phone, I’ll be able to access all of the features. If they still have an iPhone but have disabled iMessage, it will be sent as text (green bubbles). They must deregister their iMessage with Apple in order to receive texts from prior iMessage contacts if they possess another phone such as?
When a Wi-Fi network is accessible, the iMessage is transmitted via that connection. When a Wi-Fi network isn’t accessible, the iMessage is sent over cellular data. If you exceed your monthly data limit on a regular basis, you may want to turn off iMessage to save money on mobile usage.
Make sure to turn off iMessage if you switch from an iPhone to an Android phone. If you don’t, messages sent by iPhones will not be received on your new Android device.