Cell Phone WiFi Antenna Booster: WiFi Extender or Cellular Booster?

Yes. It can relay home router Wi-Fi into an area with weak coverage, where a compatible phone can connect.

No. An extender relays a local router?s Wi-Fi. A cellular booster works with mobile network signals and carrier bands.

An extender may help Wi-Fi calling if supported by phone and carrier. It does not directly improve cellular reception.

Check whether other devices also lose Wi-Fi there. If so, improve router placement or add compatible extender or mesh; if only one phone is affected, inspect its settings first.