Which phone do you have?

A couple of options. Enabling Wi-Fi calling on your phone should help with weak cellular signals. You will need a VoLTE-capable phone and a VoLTE add-on that you can add from within your self-serve account and Wi-Fi access within your home. Wi-Fi calling is automatically added after the VoLTE add-on has been added.

Most iPhones (6, 6 Plus and newer) support VoLTE and Wi-Fi Calling. For Android devices, there is a list of phones that support VoLTE and Wi-Fi Calling. I’ll provide links for Android VoLTE and Wi-Fi device support.

VoLTE Help | Koodo - navigate to the bottom of the webpage and click on the dropdown titled: Which devices support VoLTE?

Wi-Fi Calling Help | Koodo - scroll down to view the device list.

Another option is to purchase a cellular signal amplifier/booster. The initial cost is a little steep, but it will pay for itself over time.

Wilson Cell Phone Signal Boosters/Amplifiers