Disadvantages of WiFi Calling and Common Printer Error Fixes
Disadvantages of WiFi Calling and Common Printer Error Fixes
You’ve switched to wifi calling to save on cell minutes, but the call quality drops at the worst moments and you’ve started wondering about the real disadvantages of wifi calling. Meanwhile, your printer not showing up in your device list is holding up a deadline. A search reveals the printer not activated error code 41 and printer not activated error code 20 are two of the most common Windows printing errors, and your carrier’s voip support page mentions wifi calling error er081 as a known network handoff issue. Solving all of these requires understanding what’s actually failing and where to look first.
The Real Disadvantages of WiFi Calling
WiFi calling routes voice over your internet connection instead of the cellular network. The primary drawbacks of using wifi-based calling are latency sensitivity, dependency on router quality, and incomplete 911 location reporting. A congested home network — streaming video on several devices while you’re on a call — introduces packet loss that causes audio dropouts. Unlike cellular, wifi calling does not automatically hand off to the mobile network when you walk outside your router’s range; the call drops instead. Emergency services may receive your registered address rather than your actual location when you call 911 over wifi. Battery drain is also slightly higher on wifi calling devices because the radio stays active continuously. These wifi voice call limitations are worth weighing before disabling cellular entirely.
WiFi Calling Error ER081: What It Means and How to Fix It
WiFi calling error er081 typically appears on T-Mobile and MetroPCS devices when the IMS (IP Multimedia Subsystem) registration fails. The most common causes are an outdated carrier settings profile, a VPN running on the device, or a router that blocks SIP/IMS traffic on UDP port 5060. To clear the er081 wifi calling error: disable any VPN, update carrier settings (Settings > General > About on iPhone, or check for carrier update on Android), and restart the phone. If the wifi voice calling registration error persists, log into your router and ensure SIP ALG is disabled — many routers have this enabled by default, which interferes with VoIP registration packets.
Printer Not Showing Up: Initial Diagnosis
When your printer not showing up in Windows or macOS device list, start with the basics: confirm the printer is powered on and connected to the same network as your computer (or via USB). A printer failing to appear in the device list often means the print spooler service has stopped. Open Services (services.msc on Windows), find “Print Spooler,” and restart it. Then go to Settings > Bluetooth & Devices > Printers & Scanners and click “Add a Printer.” If the printer still does not appear after restarting the spooler, reinstall the driver from the manufacturer’s website rather than using the OS auto-detect, which sometimes installs an incomplete driver package.
Printer Not Activated Error Code 41
The printer not activated error code 41 in Windows means the system cannot communicate with the printer driver. This typically happens after a Windows update changes a driver registry entry. The fix: open Device Manager, find your printer under “Printers,” right-click and select “Update Driver.” If updating does not resolve the error 41 printer activation issue, uninstall the printer driver entirely, download the full driver package from the manufacturer’s site, and reinstall. For network printers, also verify the printer’s IP address has not changed — a DHCP lease renewal may have assigned a different address, breaking the port configuration in Windows.
Printer Not Activated Error Code 20
Error code 20 printer activation failure in Windows usually means the driver is installed but the system cannot find the printer on the expected port. Open Devices and Printers, right-click your printer, select “Printer Properties,” and check the Ports tab. If no port is checked or the listed port no longer matches the printer’s current IP address or USB assignment, select the correct port or add a new TCP/IP port with the printer’s current IP. Printer not activated error 20 also appears when a 32-bit driver is installed on a 64-bit Windows system — always download the correct architecture version from the manufacturer to avoid this mismatch.
Key takeaways: The disadvantages of wifi calling center on network dependency and handoff limitations — disable SIP ALG on your router to fix er081. Printer not showing up issues almost always stem from the spooler service or a stale driver; error codes 41 and 20 both resolve with a clean driver reinstall and port verification.
