It's a security app that doesn't ALWAYS work! You buy the equipment, you install the equipment, you pay for the service, upgrade your internet, get a 5G phone then hope the app works when you want it to. I don't think hoping is something that should be included in the system. Update: Nest contacted me and with some more DIY advice to help, the best was to try a different device or reinstall the app. So while I'm trying to shut off my alarm or lock my door I'm supposed to find a different phone??