Vivo Y31d is new to the existing lineup with two other siblings, and it carries the biggest battery of all. The chipset forces it down to only 4G support. Vivo Y31d also has the very new Snapdragon 6s 4G Gen 2 chip. Vivo’s older Y31 and Y31 Pro have had 6,500 mAh batteries. Yet the cheaper Vivo Y31d is actually way better, having a 7200mAh BlueVolt battery. The cell is recharged at a 44W FlashCharge input. That’s going to do 1-50% in 43 minutes. This newcomer is also IP69+ rated. It is still a budget phone, so Vivo cheaped out on Y31d’s display. Its IPS 6.75” LCD has a thick chin and very visible bezels. The panel is capped at 720p HD+ resolution. And pixels are pushed at 120Hz. There are dual speakers here. The Y31d does have stereo sound, but the audio jack is absent. The WiFi is only dual-band. Vivo Y31d is built around the 6s 4G Gen 2 chip, 6GB RAM, and 128GB storage. It boots to Origin OS 6, which means Android 16 out of the box. There is no SD card support, so you will be stuck with the storage you purchase. Vivo has mounted a single 50MP lens on its back, and the selfie shooter is 8MP. Vivo Y31d is meant to rival the Samsung Galaxy A07 and even the A17 4G in endurance/durability.