Modifications

GSM Solutions can modify the software in mobile phones in order to facilitate various uses. We have a wide range of available modifications, Network Monitor activation, De-branding, Flash file modification and Fone-Calc among others, all explained in greater detail below. If you have a particular modification in mind which is not listed below please Contact Us, as below is just a small example of whats possible. We are always open to new and fresh ideas.


De-Branding / De-customization

We offer a De-branding service for most models
De-branding a phone basically means to remove all operator logos and menus etc, then replacing it with the manufacturers original software/firmware. Many networks such as Vodafone for instance heavily brand their handsets which often restricts certain functions from being used as the manufacturer intended them to.

Test 01 - Current band information
Test display 01 gives basic information about the active base station (BS) link.

In the picture, "29" tells the channel number in use, "-87" shows received signal power in dBm (minus sign is not displayed if the value is smaller than -99), "xxx" displays the transmit power in use (preceded with "*" if the transmitter is on), "0" and "1" indicates the time slot (0 - 7) and timing advance (0 - 63), "x" is received signal quality (0 - 7), and "CBCH" tells the channel type.

It is difficult to understand the displays if you are not familiar with GSM technology. In the test display 01 the most interesting values are the received signal power that tells about the link quality (less negative, better quality), and the channel number. By following the CID (Cell ID) number on display 11 it is easiest to see cell change.

In dual-band phones the channel number tells if the phone is using the 1800 MHz band. (Normally you cannot see which band is in use). If the channel number is greater than 512, the phone is on the 1800 band.


Test 20 - Battery charging status


The charge status of the phone is displayed with test 20. In the picture,
"398" shows the battery voltage in cV,
"T+23" tells the battery temperature in OC (you can use your phone as a thermometer),
"FastC" indicates the active charging mode,
"0" displays the charging time,
"C 41" indicates the charging voltage in dV, and
"1017" is the approximate battery capacity in mAh.


Test 60 - Call counters

The phone counts calls and call attempts constantly and the current counter values are shown in network monitor display 63.
In the picture above,
"MO" displays the party who disconnected last call (MO = mobile originated/you have ended the call; MT = mobile terminated/the other party or network ended the call; UN = unknown origin; IN = phone itself ended the call),
"643" is the count of call attempts made with the phone,
"421" shows the number of successful calls called with this phone (answered calls),
"391" counts the incoming call attempts, and
"097" shows the number of calls you have answered.
Note that the counters will "wrap-around" when they reach "999". You can reset the counters with the network monitor display 60 (and with 40 & 240 but they clear other things also). To reset the counters, enter the display 60 via the Network Monitor menu (entering the display 60 with arrow keys does not reset the counters).



Flash File Modification

When a phone company manufactures a phone, it comes pre-programmed with software in the form of a flash file. GSM Solutions can extract the flash file from any phone and modify it in a number of ways. If you would like your phone modified in a specific way please let us know and we will see what we can do. Some of the modifications available include:

• putting a security code on text message inboxes for added privacy and security
• Modifying older Nokia phones so that they have "fading lights" like the Nokia 8310.
• Adding picture editors to phones
  ...and much more.