Do you carry a devise that would improve my WiFi so I can stay connected to mine when I’m on my own back porch? I need to expand the coverage

Walmart has an extender, but it kept interfering with our wifi, instead of boosting it.

Check online and with your carrier

Walmart has them but unsure which ones they carry in store. Check online for your nearest store. Good luck!!!

You can buy an extender but I'm not sure if Walmart has them.

I think that would depend on who your carrier is