Samsung P310

The Samsung SGH-P310, famously known as the "Card Phone II," remains a standout piece of mobile history, distinguished by its credit-card-sized footprint and premium execution GsmarenaMobilegazette. Released in September 2006, it was a successor to the P300 and represented the pinnacle of Samsung's "Ultra" thin design philosophy of the mid-2000s Mobilegazette.

Product Overview

* Form Factor: Roughly the size of a credit card (86 x 54 x 8.9 mm) and weighing only 85g GsmarenaGsmchoice.

* Key Features: It featured a 1.9-inch QVGA display, a 2.0MP camera with flash, and 80MB of internal storage expandable via microSD GsmarenaGsmarena.

* Dual-Battery System: Its most iconic feature was the leather wallet case that housed a secondary battery, significantly extending the phone's otherwise modest 550mAh internal capacity GsmarenaGsmarena.

* Design Legacy: Samsung officially recognizes the P310 as a direct aesthetic ancestor to the Galaxy Alpha (2014), which paved the way for the metal-framed designs of the modern Galaxy S series Samsung.

Market Trends & Insights (2026)

The Samsung P310 has transitioned from a business accessory to a highly sought-after vintage collectible.

* Collector Demand: Interest in vintage Samsung phones saw a significant spike in early 2026, with search volumes peaking as enthusiasts revisit unique form factors from the pre-smartphone era .

* Availability & Pricing:

* Untested/Parts: Units are occasionally found for $35–$40 on platforms like Etsy EtsyEtsy.

* Functional/Refurbished: Working models, especially those in unlocked condition, command prices around $60–$100, though complete retail boxes can reach £100+ ($130+) EbayPicclick.

* The "Battery Constraint": The primary hurdle in the 2026 market is finding functional batteries. Since the P310 relies on a proprietary dual-battery leather case, units missing this accessory or having dead cells are significantly less valuable to collectors GsmarenaInstagram.

* Wholesale Rarity: Direct B2B wholesale of original P310 units is virtually non-existent in 2026; sourcing is limited to individual secondary market listings or specialized vintage tech resellers .