Samsung
Add a Printer by IP Address auf Samsung
Samsung phones rely on the Default Print Service to detect nearby printers automatically. This works for most consumer models, but many office, network, or older printers are not part of that automatic detection list.
When a printer is missing, Android has no way to guess its address on the network. The fix is to add the printer manually by entering its IP address directly in the print service settings.
Menu path to add a printer manually
Tap on Settings ➔ Tap on Connections ➔ Tap on More connection settings ➔ Tap on Printing ➔ Tap on Default Print Service ➔ Open the Menu ➔ Tap on Add printer ➔ Tap on Add printer by IP address ➔ Enter the Hostname/IP address and tap Add.
You need the printer's IP address before starting. It usually appears in the printer's own network menu or in its printed status report.
If the printer still does not respond after adding it this way, check that both the phone and the printer are on the same Wi-Fi network. A firewall or guest network can also block the connection even when the IP address is correct.
For printers that support Wi-Fi Direct instead of a fixed IP, manual entry will not help. In that case, use the printer's own app or its Wi-Fi Direct pairing option instead.