The main difference between the iPhone 4S 16GB, 32GB, and 64GB models is the amount of internal storage they offer. Here's a breakdown of the differences: iPhone 4S 16GB: This model has 13.6GB of usable capacity. It is suitable for those who have limited storage needs, such as storing a smaller amount of music, apps, and videos.
iPhone 4S 32GB: This model offers 28.2GB of usable capacity. It provides more storage space for those who have a larger collection of music, apps, and videos.
iPhone 4S 64GB: This model has 57.4GB of usable capacity. It is ideal for users who require a significant amount of storage for their music, apps, videos, and other files. All other features and specifications of the iPhone 4S are the same across these three models. It is essential to consider your storage needs when choosing the right iPhone 4S model for you. Keep in mind that the actual usable capacity will be slightly lower than the marketed capacity due to the space reserved for system and operational use.