This is not an April Fools Question. Under the https://www.health.gov.au/initiatives-and-programs/covid-19-vaccines/is-it-true section the following is answered: Can COVID-19 vaccines connect me to the internet?
COVID-19 vaccines do not – and cannot – connect you to the internet.
Some of the mRNA vaccines being developed include the use of a material called a hydrogel, which might help disperse the vaccine slowly into our cells.
Bioengineers have used similar hydrogels for many years in different ways. For instance, they've used them to help stem cells survive after being put inside our bodies.
Because of this, some people believe that hydrogels are needed for electronic implants, which can connect to the internet.
The Pfizer mRNA vaccine does not use hydrogels as a component.
The Pfizer mRNA vaccine contains a piece of mRNA which is coated in a lipid (fatty) droplet. The lipid helps the vaccine enter our cells, as the membrane holding our cells together is also made mostly of lipid. The vaccine and the membrane can fuse easily, depositing the mRNA inside the cell. More Is It True questions and answers HERE