iPad3 vs. iPad4
Design
The biggest difference between the design of the iPad3 and the iPad4 is the Lightning connector. The iPad4 uses the new Lightning connector which is smaller and faster than the old 30-pin connector on the iPad3. The iPad4 is also slightly taller and heavier than the iPad3, although the difference is not very noticeable. The iPad4 comes in both black and white, while the iPad3 only comes in black.
Specs
The iPad4 has a faster processor than the iPad3. The iPad3 uses the A5X chip and the iPad4 uses the A6X chip which is faster and more efficient. The iPad4 also has an upgraded front-facing camera which is HD and includes FaceTime for video call. The iPad4 has a better image processing system which improves the quality of the pictures and videos captured by the rear-facing camera. The battery life on the iPad4 is slightly better than the iPad3.
Price
The iPad4 is more expensive than the iPad3. In fact, the iPad3 is no longer sold by Apple because it has been replaced by the iPad4. But you can still find the iPad3 on the second-hand market. The price of the iPad4 depends on the storage capacity and the presence of cellular connectivity. The iPad4 starts at $399 for the 16GB Wi-Fi model and goes up to $829 for the 128GB Wi-Fi + Cellular model.