It is possible to communicate using 4G. There is no SIM lock. Please take a close look at the images to check the condition, such as scratches, before purchasing. Shipping is planned via Yu-Yu Mercari Mail Yu-Packet Post Mini. We will use packing materials for shipping, but we cannot compensate for any damage during shipping. If you are concerned about damage, please consult with us about the shipping method before purchasing. If you have any questions, we may not be able to respond immediately. If someone purchases the item during that time, we will prioritize that purchase. Thank you for your understanding.