How to enable engineering/field test mode in blackberry

Blackberry phone has best engineering mode. You can enable it by using below steps:

Blackberry has a very nice and interesting field test/Engineering mode.
While reading a blog I show that pressing ALT+CAP+H would display usefull  information about your mobile.
But you can enable the engineering mode from this screen using steps metioned in the blog:
http://www.zibri.org/2009/08/hidden-things-are-usually-best.html
Please make sure to follow steps very clearly. Read it twice! 

UMTS Mobile Originated call flow sequence diagram (Mobile to Landline)

UMTS Voice call flow diagram for mobile to mobile call

This call flow is captured at RNC.

3G Handover Events 2a, 2b, 2c.. explained

·         Event 2a: Change of Best Frequency

·         Event 2b: The estimated quality of the currently used frequency is below a certain threshold and the estimated quality of a non-used frequency is above a certain threshold

·         Event 2c: The estimated quality of a non-used frequency is above a certain threshold

·         Event 2d: The estimated quality of the currently used frequency is below a certain threshold

·         Event 2e: The estimated quality of a non-used frequency is below a certain threshold

·         Event 2f: The estimated quality of the currently used frequency is above a certain threshold 

Periodic Location Update Timer(T3212)

Periodic Location update timer controls periodicity of the location update procedure triggered by Mobile(UE). The value T3212 shall be set to 0 if Peridic location updating procedure need to be disabled. The value can be set in multiples of 6 (6 mins) and default value is 60. When it is set to 60mins, T3212 is set to 10 because T3212 value is in dechours. 1 Decihour = 6mins

Change or add the SMSC number to apple iPhone

How to get the SMSC set in the iPhone?
In the iPhone keypad and type *#5005*7672# Press Call
How to erase the SMSC set in the iPhone?
In the iPhone keypad, type ##5005*7672# Press Call
How to modify the SMSC set in the iPhone?
In the iPhone keypad, type **5005*7672*+# Press Call

Engineering mode/Field test mode in various mobiles using codes

LG Mobile:
Most of the LG Models have similar field test menu:

1. Version
2. Factory Reset
3. Device Test
4. Port Setting
5. Modem Setting
6. SIM Test
7. IMS Setting
8. IM Client ID
   

Engineering mode (field test mode) could be found under Modem Setting. Modem setting has various options including the Network mode, Engineering Mode, GPRS Attach and many more. In some of the LG Models if you want to get into Engineering mode directly using code *748#96


Code:  277634#*#
Model : LG CU720 (LG Shine), LG CU575, LG CU500, LG CU400 (many other models)

Code : 3845#*360#
Model:  LG CF360(This model has more options in the field test mode like GPS, DRM test menus, Calibration data)


Samsung Mobile:
Code: *#0011#
Model: SGH-A707, SGH-A717, SGH-A727, SGH-i617 and many other models support this code.


Apple iPhone:
Code : *3001#12345#* then press call
Various field test information could be seen under the menus.

Blackberry Mobile:
Code: Menu->Settings->Options->status
This would show some of field test information on blackberry phones.


Nokia Mobile:
Code: *3001#12345#.
Code changes on some of the Model. Some time field test displays as Net monitor in Nokia mobiles.  Most of the models like Nokia 12xx, 51xx (except 5125), 61xx, 62xx, 71xx,3285, 63xx are supported with this code. To get out the engineering mode, you need to either dial 00/01 in some models, in some models in net monitor, you many dial 0000.

You contact me if you need more information or field test mode for any other phone/model, I would try to look and get the information back to you.