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Consumer Electronics

Teardown: K-Touch T619 Smartphone

30 April 2014
The following is an overview of a teardown analysis conducted by IHS Technology Teardown Services.

The K-Touch T619 is the lowest-priced smartphone yet encountered by the IHS teardown team. The phone retails at $33 and is aimed primarily at the Chinese market. The Android T619 supports China Mobile's 3G network based on its proprietary TD-SCDMA technology, and this helps achieve the low price point, as TD-SCDMA does not have significant license fees as compare to WCDMA/HSPA.

Internally, the K619 carries a Spreadtrum chipset solution for both baseband processor and WLAN connectivity. Spreadtrum is a common China-specific component supplier and is known for its leadership in the TD-SCDMA space. The company’s aggressive chipset prices helped with the T619 price point. Chipset brands such as Mediatek don't even compete at that price point and obviously, Qualcomm does not offer anything for that price.

According to Wayne Lam, senior analyst for telecom electronics at IHS Technology, “That's essentially the key for this product; low-cost components, low-end touchscreen display, under-powered application processors, et cetera. Smartphones that can get to $33 are all about an exercise in design compromises.”

Summary points:

  • K-Touch T619 3G TD-SCDMA Android Smartphone
  • 3.5’ (diagonal) touchscreen display
  • Single-core ARM Cortex-A5 1 GHz CPU
  • 3.7 V, 1420 mAh, 5.25 Wh Li-ion battery

Target market: Consumer

Pricing: $33

Availability: Worldwide

Total cost (direct materials and manufacturing): $31.11

Major Components:

- Apps/Baseband Processor/Power Management, Single-core ARM Cortex-A5 1 GHz CPU, Mali 400 GPU, w/Integrated Power Management & Audio Codec – MFG: SPREADTRUM COMMUNICATIONS INC. –MPN: SC8810T – (Qty: 1)

- MCP, 4Gb NAND Flash + 2 Gb Mobile DDR – MFG: SK HYNIX INC. – MPN: H9DA4GH2GJBMCR-4EM – (Qty: 1)

- RF Transceiver, Multi-Mode, Multi-Band, GSM/EDGE/TD-SCDMA/HSPA+ – MFG: SPREADTRUM COMMUNICATIONS INC.– MPN: SR3500 – (Qty:2)

- Display Module, 3.5” Diagonal, 262K Colors (TN Mode). 480 x 320 Pixels, 164 ppi, 18.3 g – MFG: TRULY SEMICONDUCTORS LTD. – (Qty: 1)

- Camera Module, 0.3 MP, CMOS, 1/8” Format, Fixed Lens – (Qty: 1)

- 4-Layer, FR4/RCF HDI, 1+2+1, Lead-Free – MFG: TIGERBUILDER CIRCUIT CO. LTD. – (Qty: 1)

- Battery, Li-ion, 3.7 V, 1420 mAh, 5.25 Wh – MPN: TBW5913 – (Qty: 1)

- Heatsink, Extruded/Machined Aluminum – (Qty: 2)

- Display Window/Touchscreen Assembly, 3.5” Diagonal, Capacitive, GF 1 Type, Painted, w/Integral Flex PCB – (Qty: 1)

- Charger, 5V, 600 mA, AC to USB Type A – MFG: SAMSON POWER TECHNOLGY CO. LTD. – MPN: S0500060-3C – (Qty: 1)

Main PCB, Top

Source: IHS

Main PCB, Bottom

Source: IHS

Enclosure

Source: IHS

Camera Module

Source: IHS

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