A smartphone is a cell-phone with powerful CPU and multimedia capability. In this presentation, we can understand of the smartphone hardware in terms of the Apple's iPhone 4S.

1. Mokwon University
Yong Heui CHO(조용희)
yhcho@mu.ac.kr
Understanding of
Smartphone

2. Apple iPhone 4S
 Apple released iPhone 4S in Oct. 2011.
 A5: powerful and faster than A4
 Twin antenna: diversity
2 ←techrepublic.com

3. World Phone Capability
 UMTS/HSDPA/HSUPA
 850, 900, 1900, 2100 MHz
 GSM/EDGE
 850, 900, 1800, 1900 MHz
 CDMA EV-DO Rev. A
 800, 1900 MHz
-UMTS: Universal Mobile Telecommunications System
-HSDPA: High Speed Downlink Packet Access
-GSM: Global System for Mobile communication
-EDGE: Enhanced Data rates for GSM Evolution
-EV-DO: Evolution-Data Optimized
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4. Breakdown of iPhone 4S
Without battery
EMI Shield
←ifixit.com
Mother-Board
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5. Li-ion Battery
 3.7 [V]: used for bias of active
devices (amplifiers, mixers, …)
 This voltage should be small to
consume smaller power (P = I x V)
 5.3 [Whr]: unit for energy (W x hour)
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6. A5 Processor
 1 GHz, 500 MB RAM
 Designed by Apple (licensed from
ARM) and manufactured by Samsung
NEON: Multimedia
Instruction Data
Chip R,L,C
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7. Power Amplifier
 PA: transmitting the RF power into air
 Heat sink is needed. Look at the metal
part below.
Skyworks PA: GSM, EDGE, WCDMA
Avaga PA: 2G and 3G
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8. Mother-Board
Qualcomm Multi-Band RF Transceiver
TriQuint SAW (Surface Acoustic Wave) BPF
TriQuint WCDMA/HSUPA PA-Duplexer
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