PERFORMANCE: Overall the Apple iPhone Duo was excellent. It struck an exceptional balance of quickness, battery life, and camera quality. Ease of use on the iPhone Duo was very good. While not the best, the touchscreen was very good, and it is easy to use. You should be able to get comfortable using this smartphone very quickly. The performance of the iPhone Duo was excellent. The maximum upload and download speeds and the tested processor performance were very fast. You should be able to accomplish most tasks with no delays. Call quality and convenience on the iPhone Duo were not the best, but they were very good. The sound while on a call was very good in a quiet room and with background noise. Your sound quality will vary due to many factors, including background noise, as you are traveling from one area to another, the quality of the phone on the other end of the call, and the quality of the signal of your Mobile Network Operator.
DURABILITY: Overall, the durability of the iPhone Duo was excellent. The phone scored a average on our scratch resistance test. This phone passed our tumble test. The tumble test results are as follows: After 50 drops in the tumbler, our experts rated it as excellent. The phone showed almost no damage. Overall, it was in good working condition. After our more strenuous 100 drops in the tumbler, the screen and body proved they can take a serious tumble. Our experts rated it as excellent. The phone showed almost no damage. Overall, it was in good working condition. This phone passed our rain test, where a gentle rain falls on the phone for 5 minutes. This phone passed its water intrusion test when submerged at its rated depth and time.
PORTABILITY/BATTERY: The 7.6-inch screen on the iPhone Duo comes in a body measuring 4.6-inches tall, 3.3-inches wide, 0.4-inches thick, and weighs 9 ounces. Those measurements mean the phone is shorter than most and also the phone is wider and heavier than most. At 36 hours, it has an above-average battery lifespan. Its battery is not removable, but the phone does support wireless charging.
CAMERA: The main rear camera on the Apple iPhone Duo measures 48-megapixels. The camera features optical image stabilization to enhance your chances of capturing better handheld photos in low-light conditions. Overall the camera performance was excellent. The main camera is tops in performance for shooting stills. Images are evaluated on high-quality LCD displays. The test photos are taken in a brightly lit studio and in a controlled studio simulating sunlight. In the viewing tests, the images were rated very good overall. These images are among the best results for color quality, exposure level, sharpness, and image noise. The iPhone Duo comes with a 12-megapixel selfie cam. Overall, the selfie camera quality was excellent.
DISPLAY: Overall the display quality was excellent. The display resolution was high enough, close to or greater than 300dpi, so you see a smooth, crisp display. If the display does have a higher resolution, most people will not be able to tell the difference. Readability outdoors is a combination of brightness, measured in candelas per square meter, and reflectivity. The readability rating was excellent. The maximum brightness measured 1 meter from the screen was a very high 794cd/m², and reflective glare was minimal.
