[Samsung Galaxy S Relay 4G] Jax184:
I've only had my Relay a week and already it's been torn apart! But what's bad for warranties is good for you, because now I can make a hardware reference guide for this phone like I did for the Sidekick 4G.

As before, this is a work in progress and based on my own research. I'm not an expert on cell phone tech, so everything here is provided with no warranties. Please let me know if you notice any mistakes and I'll be happy to update this document. I'm particularly interested in better documentation for the various components, like in-house PDFs.

Samsung Galaxy S Relay 4G Specifications:

Released as T-Mobile exclusive on September 19th, 2012.

SGH-T699

FCC ID: A3LSGHT699

2G Network: GSM/GPRS/EDGE – 850, 900, 1800, 1900 MHz

3G Network: UMTS/HSPA+ – 850, 900, 1700, 1900, 2100 MHz

WiFi: 802.11A/B/G/N dual-band 2.4/5GHz

Bluetooth 4.0

Near Field Communication

CPU: 32-bit 1.5GHz dual-core Qualcomm Snapdragon S4 (ARM V7 Architecture)

GPU: Qualcomm Adreno 225

RAM: 1 Gigabyte DDR2

Flash: 8 Gigabytes, ~5GB available to user under stock ROM

MicroSD slot for expansion

Display: 4" Samsung SuperAMOLED screen @ 800x480 with Multi-Touch Capacitive Touchscreen. 16,777,216 colours

Keyboard: 5 row 52-key QWERTY keyboard with inverted-T arrow keys

Rear Camera: 5 Megapixel with LED flash

Front Camera: 1.3 Megapixel

Other Features:

Augmented GPS/GLONASS

Accelerometer/Gyroscope

Compass

Light sensor/Proximity sensor

Mobile High-Definition Link (HDMI)

Size: 4.96" x 2.56" x 0.53"

Weight: 5.6 Ounces

Power: 1800mAH Lithium-Polymer rechargeable battery model EB-L1K6ILA with NFC antenna integrated.

http://downloadcenter.samsung.com/c...y_S_Relay_4G_English_User_Manual_UVLG8_F4.pdf - User manual

http://www.jax184.com/projects/Relay 4G/Draft Users Manual.pdf - Early draft of user manual, submitted during FCC approval.

Hardware Details:

0. Qualcomm MSM8260A Integrated Snapdragon S4 CPU, Adreno graphics core, UMTS modem, WiFi/Bluetooth backend, GPS/GLONASS receiver, DSP and USB controller

Marked:

Unknown

(Located under RAM IC as package-on-package)

1. Qualcomm WCD9310 "Tabla" Audio codec

Marked:

WCD9310

NCM218R1

A228002

13

2. Silicon Image SiI9244 MHL Transmitter

Marked:

SIMG

9244BO

NCS371A

10L2230

3. Samsung 8Gb (1GB) Low Power DDR2 DRAM

Marked:

Samsung 210

K3PE7E700D-XGC2

GKB2709U

4. Samsung 8GB NAND Flash

Marked:

Samsung 228

KLM8G2FE3B-B001

HHGX259X

5. Qualcomm HSPA+/CDMA2K/TDSCDMA/EDGE/GPS Transciever

Marked:

WTR1605

OVV

PHX403R1

AA22501

6. Qualcomm Dual-band Wi-Fi A/B/G/N, Bluetooth and FM Radios

Marked:

WCN3660

PGW541R1

A222002

7. Unknown

Marked:

SWt

GAD92

8. Anadigics Multimode Multiband Power Amplifier Module

Marked:

ALT6181

33945AC

1231PH

9. Anadigics AWT6624 UMTS1700 Power Amplifier

Marked:

6624R

4233AD

1230 PH

10. Anadigics AWT6622 UMTS1900 Power Amplifier

Marked:

6622R

4110AA

1228 PH

11. Invensense 6050 six-axis gyroscope/accelerometer

Marked:

Invensense

MPU-6050M

D2G554-K1

EI 1226 D

12. Qualcomm Power Management IC

PM8921

AD35130

f3228004

13. Analog Devices Mobile I/O Expander and QWERTY Keypad Controller

Marked:

ADP

5587

#215

14. Texas Instruments BQ24157 Lithium-Ion Battery Charger

Marked:

TI27A3JXI

BQ24157B

15. NXP PN544 Near Field Communication Controller

Marked:

44501

10 05

NXD2314

16. Atmel MaXTouch mXT224E

Marked:

MXT224E

MAH-IR0

2W1315B

http://www.jax184.com/projects/Relay 4G/Internal Photos.pdf - Photos of a prototype Relay submitted to the FCC for approval. Notice that the PCB, RF plate, keyboard frame and even the back cover have all been revised.

http://www.jax184.com/projects/Relay 4G/Test Results.pdf - Results of FCC testing of the NFC radio.

Take Apart:

Start with the phone turned off.

Flip the phone onto its back and remove the battery, SIM card and MicroSD card.

Remove the 8 long screws around the edge of the phone and the two short screws in the battery bay using a fine-tipped Phillips screwdriver. Be sure not to mix these screws up when reassembling!

If available, use a thin nylon guitar pick for this next step. Metal tools will mar the plastic.

Unlike most Galaxy S devices, the seam between the inner back and the front case of the Relay 4G is not visible from the back of the device. Instead it is on the front, around the perimeter of the keyboard. Insert a thin prying tool here and gently unsnap the plastic halves.

Lift the back off.

Gently disconnect the headphone jack cable. This connector is very fragile, and should not be pried on with metal tools. Instead it should be gripped with fingernails and slowly pulled upward.

Disconnect the screen cable along the left side of the board. Like the headphone jack, this connector is fragile and must not by forced apart. Then remove the 5 short screws which hold the PCB to the front frame.

Gently lift the PCB upwards. There are clips around the edge which will need to be gently pressed to free the board.

If needed, the keyboard can now be removed. To separate the keyboard frame from the screen, remove the final screw and gently pull the plastic straight up. Be sure not to put undue stress on the screen cable. It is held to the keyboard frame in the gold plate, which is attached using double-sided tape.

I did not dismantle the screen section of my phone beyond this point, but further disassembly appears to be straight forward.

To continue dismantling the PCB, gently disconnect the camera and MicroSD card socket cables. As above, these connectors are delicate and must not be forced apart.

Remove the two screws on the keypad side of the PCB to unfasten the RF plate.

Lift the RF plate off of the PCB.

The PCB is now bare.

Assemble in reverse order.

The PDFs linked to in the above document are owned by their respective companies. All else is covered by the following:

This work is licensed under a Creative Commons Attribution-NonCommercial-ShareAlike 3.0 Unported License.​