--- product_id: 219678158 title: "Mobile Phone, DUODUOGO J3 Android 9.0 Phone Unlocked SIM Free Smartphones, 16GB ROM/128GB Quad-Core, 5.1 Inch 18:9 Display, Triple Card Slots, Dual SIM Dual Cameras Wifi, Bluetooth, GPS, FM (Black)" brand: "duoduogo" price: "€ 0.07" currency: EUR in_stock: false reviews_count: 2 url: https://www.desertcart.pt/products/219678158-mobile-phone-duoduogo-j3-android-9-0-phone-unlocked-sim store_origin: PT region: Portugal --- # 2800mAh Battery Dual SIM Slots 16GB ROM/128GB Mobile Phone, DUODUOGO J3 Android 9.0 Phone Unlocked SIM Free Smartphones, 16GB ROM/128GB Quad-Core, 5.1 Inch 18:9 Display, Triple Card Slots, Dual SIM Dual Cameras Wifi, Bluetooth, GPS, FM (Black) **Brand:** duoduogo **Price:** € 0.07 **Availability:** ❌ Out of Stock ## Summary > 📈 Elevate Your Connectivity Game! ## Quick Answers - **What is this?** Mobile Phone, DUODUOGO J3 Android 9.0 Phone Unlocked SIM Free Smartphones, 16GB ROM/128GB Quad-Core, 5.1 Inch 18:9 Display, Triple Card Slots, Dual SIM Dual Cameras Wifi, Bluetooth, GPS, FM (Black) by duoduogo - **How much does it cost?** € 0.07 with free shipping - **Is it available?** Currently out of stock - **Where can I buy it?** [www.desertcart.pt](https://www.desertcart.pt/products/219678158-mobile-phone-duoduogo-j3-android-9-0-phone-unlocked-sim) ## Best For - duoduogo enthusiasts ## Why This Product - Trusted duoduogo brand quality - Free international shipping included - Worldwide delivery with tracking - 15-day hassle-free returns ## Key Features - • **Dual SIM Flexibility:** Seamlessly switch between work and personal life with dual SIM capabilities. - • **Smart Storage Solutions:** Expand your memory up to 128GB for all your media needs. - • **Power-Packed Performance:** Experience smooth multitasking with a quad-core processor and Android 9.0. - • **Customer-Centric Warranty:** Enjoy peace of mind with a 30-day return policy and 24-month warranty. - • **Long-Lasting Battery Life:** Stay connected longer with a robust 2800mAh battery. ## Overview The DUODUOGO J3 is an unlocked Android 9.0 smartphone featuring a quad-core processor, 16GB of internal storage expandable to 128GB, dual SIM capabilities, and a 2800mAh battery, all packed into a sleek 5.1-inch display. Perfect for professionals on the go, it offers flexibility and reliability with a 30-day return policy and a 24-month warranty. ## Description DUODUOGO J3 Mobile Phone, as an entry-level smartphone just great and a top performance ratio! DUODUOGO J3 is an inexpensive smartphone for all budgets! It is the perfect value for all children, teenagers, old people, friends, parents and people who have never used a smartphone. Warranty : If you purchase a DUODUOGO phone from our Store, we will repair or replace any defective device during the two-year maintenance period. If there is any problem, please feel free to contact us, our friendly and quick response within 12 hours. What's in the box? 1 xDUODUOGO J3 Cell Phones 1 x 2800mAh battery 1 x Power Supply (5V1A) 1 x USB cable 1x earphone 1 x protective film for display 1 x Instruction Manual Basic Information: Display: 5.1 Inch HD , 1280*800(18:9 All Screen) Front Camera: 5.0MP Rear Camera: 2.0MP CPU: MTK Quad-Core Memory: 1GB RAM 16 GB ROM Storage Extend: 128GB SIM Card: 2 Micro SIM Card Battery: 2800mAh OS: Android 9.0 Edition 2G/3G/4G Supported Metal Compact Light Design To make sure the phone work with the sim cards, please do follow the steps below: 1.Remove the back cover 2.Tear off the insulation film from the battery, or the phone would not be able to charge. 3.Insert your micro sim cards or memory card. 4.After insert your cards then restart the phone, then it would be able to read your cards. ## Features - 🏆【Android 9.0 16GB ROM/128GB 】This phone has Android 9.0 system and a new quad-core processor, which can provide a smarter, more efficient and convenient user experience. The storage can also be expanded to 128GB if you feels 16GB of ROM could not meet your demands to store photos, music and videos. - 🏆【Dual SIM & Triple Card Slots】The sim free phone is suitable for dual micro cards, allowing you the flexibility to switch between SIM cards at any time. You can balance your work and personal life perfectly and also enjoy the high-speed local network when travelling, without frequent card replacement. - 🏆【2800mAh Battery】To guarantee the safety of delivery, the battery is protected with the insulating tape. Peel it off before using this 4G smartphone. Fueled with a powerful 2800mAh battery along and smart energy-saving management, it’s possible to browse your favourite apps such as WhatsApp or Skype effortlessly, without the hassle of frequent re-charging. - 🏆【Packing】1*DUODUOGO J3 Cell Phones, 1*2800 mAh battery, 1* power supply, 1*USB cable, 1*earphone, 1*protective film for display, 1*instruction manual. - 🔊【Warranty 】Customer service is critical to a phone. Your purchase at V-Phone Store will enjoy a 30-day free return and a 24-month warranty. If there is any problem, please feel free to contact us, our friendly and quick response within 12 hours. ## Product Details - **Brand:** DUODUOGO - **Operating system:** Android - **RAM memory installed size:** 1 GB - **Memory storage capacity:** 16 GB - **Screen size:** 5.1 Inches - **Model name:** J3 - **Wireless carrier:** Unlocked - **Cellular technology:** 4G, 3G, 2G - **Colour:** Black - **Wireless network technology:** Wi-Fi ## Images ![Mobile Phone, DUODUOGO J3 Android 9.0 Phone Unlocked SIM Free Smartphones, 16GB ROM/128GB Quad-Core, 5.1 Inch 18:9 Display, Triple Card Slots, Dual SIM Dual Cameras Wifi, Bluetooth, GPS, FM (Black) - Image 1](https://m.media-amazon.com/images/I/71VFkKs03cL.jpg) ![Mobile Phone, DUODUOGO J3 Android 9.0 Phone Unlocked SIM Free Smartphones, 16GB ROM/128GB Quad-Core, 5.1 Inch 18:9 Display, Triple Card Slots, Dual SIM Dual Cameras Wifi, Bluetooth, GPS, FM (Black) - Image 2](https://m.media-amazon.com/images/I/81uZF-cI9lL.jpg) ![Mobile Phone, DUODUOGO J3 Android 9.0 Phone Unlocked SIM Free Smartphones, 16GB ROM/128GB Quad-Core, 5.1 Inch 18:9 Display, Triple Card Slots, Dual SIM Dual Cameras Wifi, Bluetooth, GPS, FM (Black) - Image 3](https://m.media-amazon.com/images/I/61boD3-VHKL.jpg) ![Mobile Phone, DUODUOGO J3 Android 9.0 Phone Unlocked SIM Free Smartphones, 16GB ROM/128GB Quad-Core, 5.1 Inch 18:9 Display, Triple Card Slots, Dual SIM Dual Cameras Wifi, Bluetooth, GPS, FM (Black) - Image 4](https://m.media-amazon.com/images/I/71HLCPnDqzL.jpg) ![Mobile Phone, DUODUOGO J3 Android 9.0 Phone Unlocked SIM Free Smartphones, 16GB ROM/128GB Quad-Core, 5.1 Inch 18:9 Display, Triple Card Slots, Dual SIM Dual Cameras Wifi, Bluetooth, GPS, FM (Black) - Image 5](https://m.media-amazon.com/images/I/715BPt6o4fL.jpg) ## Customer Reviews ### ⭐⭐⭐ Not for social media *by K***N on 13 November 2020* Keeps freezing not a top end phone ### ⭐ Very shockingly rubbish *by J***T on 2 May 2021* I would not buy this phone ever again the battery life is shocking doesn’t last very long when you play games Do not buy this product --- ## Why Shop on Desertcart? - 🛒 **Trusted by 1.3+ Million Shoppers** — Serving international shoppers since 2016 - 🌍 **Shop Globally** — Access 737+ million products across 21 categories - 💰 **No Hidden Fees** — All customs, duties, and taxes included in the price - 🔄 **15-Day Free Returns** — Hassle-free returns (30 days for PRO members) - 🔒 **Secure Payments** — Trusted payment options with buyer protection - ⭐ **TrustPilot Rated 4.5/5** — Based on 8,000+ happy customer reviews **Shop now:** [https://www.desertcart.pt/products/219678158-mobile-phone-duoduogo-j3-android-9-0-phone-unlocked-sim](https://www.desertcart.pt/products/219678158-mobile-phone-duoduogo-j3-android-9-0-phone-unlocked-sim) --- *Product available on Desertcart Portugal* *Store origin: PT* *Last updated: 2026-04-23*