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Samsung Focus

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Samsung Focus
Samsung Focus.jpg
Model Number: SGH-I917
Manufacturer: Samsung Samsung-icon.png
Release Date: Oct. 2010
Operating System: Windows Phone 7 Windows Phone 7-icon.jpg
Dimensions: 61 x 124 x 10 mm
Weight: 115g
Chipset: Qualcomm Snapdragon QSD8250
Display: 4" WVGA AMOLED
Networks: GSM850, GSM900, GSM1800, GSM1900, UMTS850, UMTS1900, UMTS2100
Wifi: Not Known
Bluetooth: Bluetooth 2.1 + EDR
NFC: Not Known
GPS: Yes
Video out: Not Known
Camera: 5 MP, LED Flash, Autofocus
Secondary Camera: N/A
Internal Memory: 512MB RAM, 1GB ROM, 8GB Internal Storage
Memory Card: N/A
Battery: 1500 mAh
Additional Features: Not Known


Introducing the Samsung Focus.

Also known as Samsung SGH-i917.

With a 4" Super AMOLED display, 5MP camera and running the latest Windows Mobile operating system, the Samsung Focus is one of the best phones on the market.


  • The thinnest and lightest of the Windows Phone 7 devices, making it one of the most desirable. It's 4" 800x480 Super AMOLED display is vibrant and rich with colour, perfectly complimenting Windows Phone 7.
  • It's capacitive touch screen is beautifully responsive and accurate.
  • Microsoft's new Windows Phone 7, with additional Samsung and AT&T applications.
  • Qualcomm Snapdragon QSD8250 Processor/Chipset
  • 5MP camera with LED flash and auto focus. Ability to change everything from ISO, to contrast and sharpness.


  • Operating System: Windows Phone 7
  • Processor: Qualcomm SnapDragon QSD8250
  • Bands: GSM850, GSM900, GSM1800, GSM1900, UMTS850, UMTS1900, UMTS2100
  • Display: 4" WVGA (800x480) Super AMOLED 24 bit - Multi-touch input method - Accelerometer sensor for UI auto-rotate - Proximity sensor for auto turn-off
  • Camera: 5.0MP Camera with LED flash and Auto-Focus, Geo Tagging, Image Stabilization, Smile Detection
  • Video [email protected]
  • Memory: 512MB RAM, 1GB ROM, 8GB Internal Storage, Expandable to 32GB (with certified WP7 SD Cards)
  • Connectivity: WLAN 802.11b/g/n; Bluetooth 2.1 with EDR, USB 2.0; GPRS Class 10 (4+1/3+2 slots), 32 - 48 kbps; EDGE Class 10, 236.8 kbps; 3G HSDPA, 7.2 Mbps; HSUPA, 5.76 Mbps Infrared port No USB Yes, v2.0 microUSB
  • Dimensions: 61 x 124 x 10 mm
  • Weight: 115g
  • Battery: 1500mAh
  • Other: GPS (AGPS), FM Radio, Digital Compass, Ambient Light Sensor, Proximity Sensor, G-Sensor and capacitive sensor buttons
  • Notable Mentions: Raised power button is on side of device, 3.5mm Headset jack and USB Micro B connection are on top of phone, the phone does not have an external LED for sms/call notification

There are several hardware revisions of the phone:
1.0 - developer: initial developer revision (sold phones should not have this)
1.3 - customer: first batch of phones sold until March 2011 are guaranteed revision 1.3
1.4 - customer: after march 2011, this revision started to appear along 1.3

Important: The ROMs for Focus revision 1.3 are different from the ones of 1.4 and flashing the wrong firmware (1.3 firmware on 1.4 Focus or the other way around) will brick the phone.

To determine the hardware revision do the following (as per this post):

In Diagnosis (##634# in Dialer), enter *#32489#
press Back button on the screen (lower right), 4 times
until you see:
1. debug screen
2. version information

here, press 2 (version information)
then press 2 (HW VERSION)
then press 1 (READ HW VERSION)
you should see REVx.y this is the hardware revision (x.y=1.3 or 1.4 - most commonly, there are reports of 1.2 and 1.0)

One important note: according to this post, you can flash revision 1.3 firmware onto hw 1.2.

Samsung Focus Tips & Tweaks

Soft Reset: Samsung Focus will be powered down, all settings, apps and data are saved.
Method 1: Hold Down Power Button (Goodbye!)

Hard Reset: Samsung Focus will be returned to its original state with full data wipe.
Method 1: (PREFERRED) Dial ##634# from the phone pad press the call button when the diagnostic screen appears type *2767*3855# to preform a full restore.
Method 2: Hold down the Power button, volume down button, and camera button
Method 3: Go to the Start screen, select Settings. Select the About screen. Select 'reset your phone' This method is not for fully recovery as method 1 and 2. Factory setting will be restored, but not deleted programs. Some issues are remain after this recovery method.

Force the phone into Download mode without a USB Jig: Pull The Battery, then keeping pressed Volume Up + Camera + Power buttons, insert the battery. The phone will be forced to boot into download mode and you can flash straight away.

Set Static IP for WIFI connection on Focus You can change the network settings after you connect to the wireless network. Just press and hold the wireless connection name that you succsesfully connected to and you can edit it.

Enable Sms Delivery Confirmation (on AT&T & other carriers) See this XDA thread or read the short version: using a registry editor: go to Current User\Software\Microsoft\ShortMsg\Settings and edit DeliveryNotifySupported=1 and SMSDeliveryNotify=1

Set APN for Data connection You can set the APN for your carrier to access data connections by clicking the Add APN button in Settings > Cellular (type "wap.cingular" in APN edit window then save). To fix MMS and Data settings through Auto Provisioning, unlock Focus with Chevron WP7, install Samsung Tools, and run the application. (details here). The Chevron unlock no longer works. Here is a working method for unlocking the Focus and provisioning MMS.

Samsung Focus Diagnostic Mode To access the diagnostic program you will need to dial ##634# from the phone pad.
Diagnostic Commands:

  • *#0*# - LCD Test
  • *#0002*28345# - Focus Audio Control Utility
  • *#0011# - Power and Temprature settings
  • *#0228# - Battery Information
  • *#0289# - Melody TestTest External and Internal Speaker
  • *#03# - SMDInfo
  • *#05# - Simple test menu
  • *#06# - Show IMEI #
  • *#9920# - Connection Settings (cannot edit) #
  • *#0673# - MP3 Test MenuShows Audio sound tests
  • *#0782# - Shows Clock & Alarms settings
  • *#0842# - Vibrate test menu
  • *#0987# - Multitouch test
  • *#1111# - Show FTA software version
  • *#1234# - Shows the PDA and the Phone version number
  • *#197328640# - The Root Menu
  • *#2*# - Battery Information
  • *#2222# - Show FTA hardware version
  • *#2263# - RAT Selection option is resricted
  • *#232337# - Bluetooth MAC Adress
  • *#2580# - Integrity Control
  • *#3*# - Test Brightness
  • *#32489# - (GSM test) Shows the ciphering status and options to enable or disable it.
  • *#7284# - USB Path control
  • *#745# - Operation (2): Ril log done
  • *#7450# - Operation (99):Error Report off done
  • *#7451# - Operation (99):Error Report off done
  • *#7465625# - Shows status of the Network Service Provider SIM or Corporation lock
  • *#770# - Operation (99):Vphone 770 done!
  • *#771# - Operation (99):Vphone 771 done!
  • *#772# - Operation (99):Vphone 772 done!
  • *#773# - Operation (99):Vphone 773 done!
  • *#774# - Operation (99):Vphone 774 done!
  • *#775# - Operation (99):Vphone 775 done!
  • *#776# - Operation (99):Vphone 776 done!
  • *#777# - Operation (99):Vphone 777 done!
  • *#778# - Operation (99):Vphone 778 done!
  • *#779# - Operation (99):Vphone 779 done!
  • *#780# - Operation (99):SR Test done!
  • *#9090# - Diag ConfigUART/USB settings
  • *2767*3855# - Full Reset (Caution every stored data will be deleted.)
  • *#1472365# - Location Service (GPS test app)

Samsung Focus Tethering Instructions

Currently instructions only apply to AT&T network, USA.

Preparing the Samsung Focus to Tether

    1. On the Focus, go to the keypad and dial ##634# and hit call button
    2. Diagnostic Keypad will come up
    3. Dial *#7284# which will bring up the USB Path Control settings…
    4. Chose USB Modem Tethering Call.
    5. Plug USB cable into phone and into your PC.
    6. Computer will install the drivers automatically (NOTE: You must be online to download the drivers)

Initializing External Samsung Modem

    7. Go to Start Menu
    8. Type in Modem
    9. Click on Modems Tab
    10. Select Samsung Mobile Modem
    11. Right click on SAMSUNG Mobile Modem icon and click on Properties
    12. On the General Tab, click "Change Settings"
    13. This will unlock the Advanced Tab where you can input the Extra Initialization Commands
    14. Switch to Advanced Tab
    15. Type in under Extra Initialization Commands: AT+CGDCONT=1,”IP”,”wap.cingular”
    16. Click OK.

Connecting to the Internet

    17. Now under the Start Menu type in: Connect to the Internet
    18. Click on New Connection
    19. Click on Dial Up
    20. Into Dial-Up Phone Number, type: *99***1#
    21. Into User Name, type: [email protected]
    22. Into Password, type: CINGULAR1
    23. Into Connection Name, type: Samsung Focus Tether
    24. Click Connect

NOTE: In the future, the Connect window will start with Windows 7 and all you'll have to do is click Connect and the Phone will do the rest.

Samsung Focus Audio Level Changes

Increase Speaker Volume

1- Go to the dialer of your phone and access diagnostic mode by dialing ##634# or start the Diagnosis app by clicking it from your app menu.

2- Input *#0002*28345# to get to the Audio menu.

3- See the last option named “Device Gain (max/min)”... Hit the “Get” option next to it.

4- Now from among the 3 fields: in the second one enter 1600 and in the third field enter 0.

6- Hit “Set”.

7- Tap “Start” button at the bottom of the app.

8- Exit Diagnosis by clicking the windows home button then restart your phone.

Increase Headphone Volume

1- First and foremost make sure that your headphones are attached to your phone, as the fix won’t work otherwise.

2- Go to the dialer of your phone and access diagnostic mode by dialing ##634# or start the Diagnosis app by clicking it from your app menu.

3- Input *#0002*28345# in the diagnosis screen.

4- Navigate to “Device Gain (max/min)” and hit the "Get" button next to it.

5- In the 3 fields, enter these values respectively 5, 1100 and –1100 (some people use 1500 in second field but I think it is too high)

6- Hit "Set".

7- on the next line below change the AUDIENCE.CFG to "on".

8- Tap on the "Start" button at the bottom of the app.

9- Exit Diagnosis by clicking the windows home button then restart your phone.


- If you do not have the Diagnosis app (or can not enter the Diagnosis mode), you can sideload the attached .xap in this post:

- Speaker volume may become so loud and it may crackle at really high volumes, so I use the hardware volume buttons to stay slightly below the maximum volume. You can try using the Diagnosis app to restore the default values below, but it may not help & only a hard-reset will apply these default original volumes.

- Please note, there are a variety of methods being used to change audio settings, some people are changing Gain only while others are setting only the Max/Min levels.

These are the default settings as of 03/06/2012 DEFAULTS

No Headset Plugged in: Sound Tuning 1 1C 74 4 23 9D 95 12 System Gain Attenuation 7 130 0 Class Gain Attenuation 7 0 5 Device Gain 7 1200 -500 audience.cfg Off

With Headset plugged in: Sound Tuning 1 1C 74 4 23 9D 95 12 System Gain Attenuation 5 145 0 Class Gain Attenuation 5 0 36 Device Gain 5 400 -1100 audience.cfg Off

SIM Unlock

How to unlock with code (IMEI dependent):
1. Open Diagnosis (enter ##634# in dialer)
2. In Diagnosis type *#7465625# to enter Locks menu (carrier/network etc) and enter in "Network Lock"
3. In the "Enter NCK" box type your code and press Execute

Formatting, Flashing, upgrading, downgrading OS and firwmare doesn't affect Network lock (SIM lock).
Locks are in NVRAM - you do not overwrite this section by flashing firmware or formatting.
If the device is already SIM unlocked, flashing/updating/downgrading/formatting/etc the ROM will keep the phone unlocked.

SIM unlock refers to the ability to use the phone with different carriers
Developer unlock refers to the ability to sideload apps (XAPs).
For all types of unlock, please read Heathcliff's extensive post [here]

Micro SD Card List

Please note: you can install a microSD card anytime, but after it is installed, it will become part of the OS and the phone requires a hard reset. The best time to install a microSD card is immediately after a hard reset or flashing. Generally speaking, before installing a card, it is recommended that you do a complete sync and take note of all your installed apps so you can re-install them later. Once the card becomes part of the phone's OS, it is "locked" and if you remove it, the phone won't work and will require a hard reset. Also, when removed, the card is "locked" and won't be recognized properly in Windows or by most devices/card readers. To unlock it, you need a camera or a Nokia phone (series N or E), please read [this thread] for more information.

It is generally recommended to use a lower class card, because these have lower access times (faster seek and access).
Lower speed class (C2-C4) generally have lower access times (seek etc), lower burst rates (2-4 MB/sec)
Higher speed class (C6-C10) generally have higher access times, higher burst rates (6-10+ MB/sec)
Higher class (micro)SD cards are optimized for speed, not fast access times.

Data compiled from this XDA thread from period 1 April 2011 - 24 Nov 2012:

WORKING cards (Data remains after soft reset)

    3C Pro
      3C Pro 32GB Class 6 (made in Korea)
      A-Data 16GB Class 4 (AUSDH16GCL4-RA1)
      A-Data 32GB Class 2
      Centon 8GB Class 6
      Kingston 4GB Class 4
      Kingston 8GB Class 4
      Kingston 16GB Class 4
      Microcenter 16GB Class 2
      Patriot 8GB Class 4
      Patriot 16GB Class 2
      Patriot 16GB Class 4 (PSF16GMCSDHC43P)
      Patriot 32GB Class 4 (PSF32GMCSDHC43P) (*2)
      Patriot 32GB Class 10 (PSF32GMCSDHC10) (*1)
      PNY 4GB Class 4
      PNY 8GB Class 4
      PNY 16GB Class 2
      PNY 32GB Class 4 (*2)
      PNY 32GB Class 10 (2 reports, one on model P-SDU32G10TEFM1)
      Samsung 8GB Class 2
      Samsung 8GB Class 4
      Samsung 8GB Class 6 (*1)
      Samsung 16GB Class 2
      Samsung 16GB Class 6
      SanDisk 8GB Class 2
      SanDisk 8GB Class 4
      SanDisk 16GB Class 2
      SanDisk 16GB Class 4 (*2)
      SanDisk 32GB Class 2
      SanDisk 32GB Class 4 (SDSDQ-032G-A11M)
      SanDisk 32GB Class 10 (Mobile Ultra, SDSDQY-032G-U46A) (*1)
      Strontium 32GB Class 10 (*2)
      Transcend 16GB Class 4 (*1)
      Transcend 32GB Class 4 (TS32GUSDHC4E)
      Transcend 32GB Class 10 (TS32GUSDC10)

(*1) just one report
(*2) some reported issues: slowdowns, occasional freeze, but data is still kept after reset. Others report no issues so most likely depends on the exact model.


      Kingston 32GB Class 4 (reported both complete success and complete failures on this type)
      Wintec 32GB Class 10 (seemed to work but some reboots reported, no follow-up)

NOT WORKING cards (Data gone after soft reset)

      A-Data 4GB Class 6
      A-Data 8GB Class 6
      A-Data 16GB Class 6
      A-Data 16GB Class 10
      Lexar 16GB Class 6
      Lexar 32GB Class 10
      Patriot 32GB Class 10
      PNY 16GB Class 10
      Transcend 8GB Class 6
      Transcend 16GB Class 6

Further Information