Hauff-CH7 months ago000Hello, What do you need for a mobile phone subscription? Do you need data? If so, how much? Do I also need unlimited calls?Show in original language (German)stevenmuel7 months ago-101Yes, the watch needs a SIM card and a plan makes perfect sense. There are special plans for such watches. Even roaming is no problem. I'm a Sunrise customer and the plan (We Connect Watch) for the watch only costs an additional 10/month.Show in original language (German)Comment2 comments