is cellular avaible on lap

The general answer that BobTheFisherman provided is correct.

A device like an iPad can be purchased with a cellular radio built in, and then you can arrange with a carrier to get it a data and/or voice connection. Macs are not shipped with a cellular radio included.

If you wanted to, your could use one of these add-on options:

• Buy a USB-C dongle that provides the required cellular radio connection, and arrange with a carrier for cellular support.

• "Share" your existing iPhone or android phone correction out over Wi-Fi to your computer. This technique is generally called connecting to a cell phone "hot spot".

highrolle wrote:

is cellular avaivle on mac laptops

Use a mobile phone to connect your Mac to the internet

No.