Find your carrier or device below. Each guide includes the exact GSM codes, step-by-step instructions, and how to forward unanswered calls to Hallodesk.
Set up call forwarding on 1&1 and Congstar. GSM codes, app and portal instructions, network differences (O2 vs. Telekom), and troubleshooting tips.
Set up call forwarding on A1 Austria. GSM codes, Mein A1 app instructions, online portal, prepaid and contract differences, and FAQs.
Carrier-specific call forwarding guides for Germany, Austria, and Switzerland. Find your carrier, get the right codes, and start forwarding calls in minutes.
Set up call forwarding on Android phones. Step-by-step instructions for Samsung, Google Pixel, Xiaomi, and other Android devices. GSM codes as universal fallback.
Step-by-step instructions to set up call forwarding on AT&T. Includes *72/*73 codes, standard GSM codes, myAT&T app setup, and troubleshooting.
Set up call forwarding on Drei Austria. GSM codes, Drei App, Kundenzone portal, prepaid and contract notes, and FAQs for Drei customers.
Step-by-step instructions to set up call forwarding on EE. GSM codes, My EE app setup, ee.co.uk account management, and troubleshooting tips.
Set up call forwarding on your FRITZ!Box router. Step-by-step web interface instructions, time-of-day rules, caller-based routing, and tips for connecting Hallodesk.
Set up call forwarding on iPhone. Built-in Settings app for unconditional forwarding, GSM codes for conditional forwarding (no answer, busy, unreachable), and Hallodesk integration.
Set up call forwarding on Magenta Telekom Austria. GSM codes, Mein Magenta app, online Kundencenter, prepaid and contract options, and FAQs.
Set up call forwarding on O2 / Telefonica Germany. GSM codes, Mein O2 app instructions, portal setup, roaming limitations, and troubleshooting.
Set up call forwarding on Salt Switzerland. GSM codes, My Salt app, online portal, prepaid and contract details, and FAQs for Salt mobile customers.
Set up call forwarding on Sunrise Switzerland. GSM codes, My Sunrise app, online portal, prepaid and contract options, and FAQs for Sunrise customers.
Set up call forwarding on Swisscom Switzerland. GSM codes, My Swisscom app, online portal, prepaid and contract notes, and FAQs.
Step-by-step instructions to set up call forwarding on T-Mobile US. GSM codes, T-Mobile app settings, 611 hotline, and troubleshooting tips.
Set up call forwarding on Telekom (Germany). GSM codes, MeinMagenta app instructions, Kundencenter portal, prepaid vs. contract differences, and troubleshooting.
Step-by-step instructions to set up call forwarding on Verizon Wireless. Includes *72/*73 codes, GSM codes, My Verizon app setup, and troubleshooting.
Set up call forwarding on Vodafone Germany. GSM codes, MeinVodafone app setup, online portal, CallYa prepaid notes, and common issues.
Step-by-step instructions to set up call forwarding on Vodafone UK. GSM codes, My Vodafone app, and troubleshooting tips. Also covers Three UK basics.
