Poco X8 Pro/Pro Max launch, Samsung A-series leaks, and OnePlus 15T details - Week 12 mobile roundup

The mobile world delivered a packed week of launches, leaks, and surprising discontinuations. Here's what mattered most in Week 12 of 2026.

Poco X8 Pro and X8 Pro Max officially launch

Poco has unveiled its latest budget champions, the X8 Pro and X8 Pro Max, both built around the philosophy of massive batteries and competitive pricing.

Poco X8 Pro specs and pricing

The standard X8 Pro features a 6.59-inch display powered by a MediaTek Dimensity chipset. The standout feature is its 6,500mAh battery, which should easily deliver two-day battery life for most users. Poco positions this as a durable, IP69K-rated device with a price of $330/€390 for the base 8GB/256GB configuration.

Poco X8 Pro Max takes it further

The Pro Max variant pushes boundaries with a larger 6.83-inch display and an industry-leading 8,500mAh battery. This makes it one of the largest battery capacities available in a mainstream smartphone. The Pro Max comes with 12GB RAM and 256GB storage, priced at $470/€390. Both models share similar design language and durability features, targeting users who prioritize battery life over cutting-edge performance.

Samsung Galaxy A37 and A57 leak pricing in Thailand

Samsung's upcoming mid-range lineup continues to generate buzz, with fresh leaks emerging from Thailand providing concrete pricing details.

Galaxy A57 pricing and specs

According to TikTok videos and Thai sources, the Galaxy A57 will launch at THB 17,999 ($554) for the 12GB/256GB model and THB 20,999 ($646) for the 12GB/512GB variant. The phone appears to be positioned as a premium mid-ranger with higher memory configurations than typical in this segment.

Galaxy A37 positioning

The A37 takes a more conservative approach, offering a single 8GB/256GB configuration priced at THB 13,999 ($430). This suggests Samsung is targeting different market segments with these models - the A57 for performance-focused users and the A37 for those seeking value.

Hands-on videos from Thailand show both devices in action, confirming design elements and build quality ahead of the official launch.

Samsung's surprising TriFold discontinuation

In unexpected news, Samsung has confirmed it will discontinue the Galaxy Z TriFold just three months after launch. The decision affects the Korean market first, with US discontinuation to follow.

Industry sources suggest Samsung created the TriFold primarily as a technology demonstration rather than a commercially viable product. The company wanted to showcase its foldable display capabilities and prove it could engineer such a complex device, but apparently never expected the TriFold to generate significant revenue.

This move highlights the challenges of pushing foldable technology to its limits and suggests Samsung may be reassessing its foldable strategy for 2026.

OnePlus 15T launch details emerge

OnePlus has officially set March 24 for the OnePlus 15T launch in China. The flagship will feature the Snapdragon 8 Elite Gen 5 SoC, representing the latest Qualcomm mobile platform.

Key specifications include:

• 12GB or 16GB RAM options
• Up to 1TB storage
• 7,500mAh battery (one of the largest in a flagship)
• 6.32-inch compact display
• Three color options available

Pre-orders are already open, and official images have revealed magnetic accessory compatibility, suggesting OnePlus is expanding its ecosystem of attachable peripherals.

vivo X300 series and Pad 6 Pro details surface

vivo has officially confirmed March 30 as the launch date for its X300 Ultra and X300s flagship models. The X300 Ultra will be available in four configurations: 2GB/256GB, 12GB/512GB, 16GB/512GB, and 16GB/1TB.

Color options include black, silver, and green for the Ultra model, while the X300s shares memory configurations but offers blue, grey, and purple colorways. The vivo Pad 6 Pro is also expected to debut alongside these smartphones.

Oppo Find X9 Ultra specs leak

Complete specifications for the Oppo Find X9 Ultra have leaked online, revealing what appears to be a comprehensive flagship package. The device is now expected to launch next month, though Oppo hasn't provided official confirmation.

This week demonstrated the industry's continued focus on battery capacity, with Poco's 8,500mAh offering and OnePlus's 7,500mAh flagship challenging the notion that high performance requires sacrificing endurance. Meanwhile, Samsung's A-series leaks suggest competitive mid-range pricing, and the TriFold discontinuation serves as a reminder that not every technological achievement translates to commercial success.