Cornet can send short messages across cities.

Yes, but the designated cross-city network, let me say here, the provincial network does not mean that two mobile phone numbers in different places can dial online, but the provincial network can answer and dial short numbers in Guangdong Province for free. If the two cards belong to different places, only cross-city networks in Guangdong Province can call each other, which costs five yuan a month.

Cross-city cornet trunking network (monthly call charge in 5 yuan)

China Mobile's cross-city cornet trunking network is an upgrade on the basis of the original cornet trunking network, which can combine the numbers of different cities (currently accepted cities: Shenzhen, Guangzhou, Dongguan, Zhongshan, Foshan and Meizhou) in the same group. You don't need to change your number, you don't need to roam, you just need to add a short number, and you can talk to colleagues, friends, family and classmates in different cities for free!