Will the MC03 work with all mobile providers, e.g. O2, Vodafone, Telekom, 1&1 and prepaid providers?Updated 5 hours ago

Yes. The MC03 is designed to work with major mobile network providers such as O2, Vodafone, Telekom and 1&1, as well as most prepaid and SIM-only providers.

The device supports a wide range of 2G, 3G, 4G LTE and 5G bands, including key frequencies used in Germany and across Europe.

Supported bands:

2G, GSM: 850 / 900 / 1800 / 1900
3G, UMTS: B1 / B2 / B5 / B8
4G LTE: B1 / B2 / B3 / B5 / B7 / B8 / B20 / B28 A+B / B9 / B18 / B19 / B34 / B38 / B40 / B41, 194 MHz / B42 / B43, 194 MHz
LTE Band 20, 800 MHz, and Band 28, 700 MHz, which are important for European coverage, are fully supported.

5G NR, Standalone supported: n1 / n3 / n5 / n7 / n8 / n20 / n26 / n28 / n38 / n40 / n41 / n77 / n78
5G n78, 3.5 GHz, the main 5G band in Germany, is supported.

Features such as VoLTE, VoWiFi and 5G Standalone may depend on your network provider and subscription plan, but standard voice, data and messaging services are fully supported.