. There are numerous factors that impact data usage. I’d first suggest that you change your home network password to something new. We’ve heard from several customers recently, who—after noticing discrepancies in their data usage—were able to restore their data usage to what they considered ‘normal’ for their household simply by changing their network password. Have you checked all of your household devices for viruses and malware? Spyware running in the background can cause sudden spikes in data usage. Our computers, smart home assistants, game consoles & mobile devices may be sending or receiving data even if we are not actively using our Internet service.