Is there a way to boost cell phone signal at home?

At home I always have 1 bar with ATT, is there a way to boost signal so I have more bars?

Check out microcells (at one point wireless companies would give them to you for free if you had a convincing case) and/or see if you can set your phone to make phone calls over wifi when it’s available.

Wilson cell phone boosters. Just add money.

AT&T Wireless

AT&T wifi calling

I have an AT&T microcell, which they offered to us, for free, about a decade ago. It works like a charm, though if the power or the internet go out, it no longer functions, of course.

Not for phones, but in the past I’ve put my network gear on a UPS so if the power goes out I still have my internet.