NIU Niutek 3.5D2

The NIU Niutek 3.5D2 is a budget-friendly smartphone that was released in August 2014. It runs on the Android 4.2 (Jelly Bean) operating system and is powered by a dual-core 1.0 GHz Cortex-A7 processor, along with a Mediatek MT6572M chipset and Mali-400 GPU. The phone comes with 2 GB of internal memory and 256 MB of RAM, which can be expanded up to 64 GB via microSD card.

The NIU Niutek 3.5D2 features a 3.5-inch TFT display with a resolution of 320 x 480 pixels and a pixel density of 165 PPI. It has a capacitive touchscreen with a screen-to-body ratio of 51.5% and a display aspect ratio of 3:2. The phone supports GSM / HSPA networks and has dual SIM capabilities.

In terms of camera, the NIU Niutek 3.5D2 sports a 2 MP main camera with LED flash and panorama mode, as well as a 0.3 MP selfie camera. It also includes features like Wi-Fi, Bluetooth 3.0, GPS, FM radio, and a 3.5 mm jack for headphones.

Pros:
- Affordable price
- Expandable storage up to 64 GB
- Dual SIM capabilities
- Decent battery life
- Compact and lightweight design

Cons:
- Low internal memory and RAM
- Outdated operating system
- Low-resolution display
- Limited camera capabilities

Overall, the NIU Niutek 3.5D2 is a basic smartphone suitable for those on a tight budget or looking for a simple device for everyday use. However, it may not be suitable for users who require more advanced features or performance.