The iPhone 4 is Apple's fourth smartphone in a row. The Cupertino technology giant revealed it to the public in June 2010. Compared to previous models, it differed significantly in terms of design and hardware. In terms of design, the back has been flattened and the body has become thinner, the body is surrounded by a steel frame, and the front and back are made of glass. In terms of hardware, the manufacturer equipped the phone with its own chip Apple A4 (previous models used Samsung chips), compared to its predecessor, it got double the size of the operating memory, the display was also improved (it was of the IPS LCD type and had a significantly higher resolution of 960 x 640 pixels) and the camera, whose resolution was increased to 5 MPx. The iPhone 4 was also the first iPhone to have a front camera, albeit with a resolution of only 0,3 MPx. We must not forget the software side either - the new iOS 4.0 system offered multitasking and the new FaceTime video chat service, which still exists today.
Technical Specifications
| Performance date | 7. June 2010 | |
| Capacity | 8, 16, 32GB | |
| RAM | 512 | |
| Dimensions | 115,2 x 58,6 x 9,3 mm | |
| Weight | 137 g | |
| Display | 3,5" IPS LCD | |
| Chip | Apple A4 | |
| Networks | GSM, HSPA | |
| Camera | 5 MPx | |
| Connectivity | Bluetooth, 30pin, 3,5mm jack | |
| Battery | 1420 mAh |
