It is true that mobile shoppers often use the cart to hold items they might be interested in buying but have no intention to purchase them all. However, about 68% of mobile shoppers abandon their cart without purchasing anything.
In order to improve this high abandonment rate, shopping carts for ecommerce mobile apps should be designed with simplicity in mind by removing unnecessary points of interaction.
In addition, encourage users to start the checkout process by answering common customer questions upfront, such as is checkout secure, how much will shipping cost, where can I apply a voucher, will it be easy to return, and so on.