Be sure to turn off "WLAN-Telefonie" in your phones. O2 charged my girlfriend over 90 EUR for a month because she called to Austria using WhatsApp and FaceTime. : r/germany
mquadr.at | Go-live of the innovative o2 DSL Service Suite
o2: tariff without limit for 10.99 euros per month
mquadr.at | Go-live of the innovative o2 DSL Service Suite
O2 Internet-to-Go: 1x zahlen, 365 Tage lang überall surfen - PC-WELT
Quick start guide
A comprehensive guide to internet in Germany
Internet at Home with O2 Germany
TP-Link Archer VR2100v Internet Box 3, Super-VDSL 35b Modem Router, 4 × Gigabit Ports, AC2100 WiFi, Up to 6 DECT Handsets, Compatible with Telekom/1&1/Vodafone/O2, Only for Germany: Amazon.de: Computer & Accessories
Travelling to Germany? Tips for getting mobile internet access ( Updated September 2022 ) - BudgetTraveller
O2 Data SIM Card with 50GB 4G/5G Data Includes 25GB to Roam Free in 47 Countries No Contracts, No Obligations, No Credit Checks, No Personal IDs: Amazon.de: Electronics & Photo
Refurbished Apple iPhone 13 Pro Max Deals & Contracts | Like New | O2
TP-Link Archer VR2100v Internet Box 3, Super-VDSL 35b Modem Router, 4 × Gigabit Ports, AC2100 WiFi, Up to 6 DECT Handsets, Compatible with Telekom/1&1/Vodafone/O2, Only for Germany: Amazon.de: Computer & Accessories
O2 HOMEBOX 6441 QUICK START MANUAL Pdf Download | ManualsLib