Is there any difference between the dual SIM Card iPhone 11 and single SIM card iPhone 11?

The only dual sim iPhone that has two physical sims in only sold in China.

Hello Arshia_myh,

Welcome to the Apple Support Communities. I understand you have a question about the iPhone 11 and Dual SIM.

To answer your question, all iPhone 11 have Dual SIM: iPhone 11 - Technical Specifications. While there's not an iPhone 11 model without Dual SIM, it would be up to you as to whether you use a second SIM.

I hope this helps to answer your question.

Cheers.

The devices with physical dual SIM slots are only sold in mainland China, Hong Kong and Macau. Everywhere else, the models have a single physical SIM slot and a programmable eSIM. Functionally, they are the same.

No such thing as a single sim iPhone 11. All iPhones 11 are dual sim, the difference is wether the secondary sim is physical (only in China, Macau and Hong Kong) or if its an eSim (Embedded digital sim in the rest of the world).

Both versions are exactly the same in all other regards. There is no one better than the other. They are the same iPhone.