Can mobile text messages be sent abroad? How to charge?

Yes.

1. Sending international text messages from mainland China to customers of operators outside mainland China costs 1.00 yuan per message. 2. After roaming to countries and regions outside mainland China and sending international text messages to operator customers outside mainland China,

"SMS roaming outbound visit rate standard × 115% + 1.00" yuan/send. 3. After roaming to countries and regions outside mainland China and sending text messages to China Mobile customers (SMS international roaming), "SMS roaming outbound visit tariff standard × 115% + 0.10" yuan/message. 4. Customers who roam to countries and regions outside mainland China and then send text messages to China Unicom (SMS international roaming),

"SMS roaming overseas visit tariff standard × 115% + 0.15" yuan/send.