Unfortunately, you cannot upgrade your iPad to cellular after purchase. The cellular capability is built into the hardware during manufacturing.
Here's why:
- Cellular iPads have a built-in cellular modem: This allows them to connect to cellular networks for internet access, phone calls, and texting.
- Wi-Fi only iPads lack this modem: They rely solely on Wi-Fi connections for internet access.
Therefore, if you bought a Wi-Fi only iPad, you cannot add cellular functionality later. You would need to purchase a new iPad with cellular capabilities.