Chapter 1 – Introduction
Nowadays the mobile phone has become the most widely used and diverse
piece of technological equipment, surpassing fixed line telephone, radio or television
with a 3 billion subscribers worldwide and in the Philippines alone, where mobile
subscribers grew from 10,000 in 1990 to 46.2 million last year. This technology became
a fun stuff for some people to mingle with other mobile users. Questioning, how it
works, how did the originator invented this kind of device, etc. Most of the times some
people use this device to entertain other people and it is part influencing life cycle.
A mobile phone or cell phone is an electronic telecommunications device with
basic capability as a conventional fixed-line telephone, but which is also entirely
portable and is not required to be connected with a wire to the telephone network.
Mobile Phones are generally developed for communication, Mobile phones do
not only support voice calls; they can also send and receive data and faxes (if a
computer is attached), send short messages (or "Text Messages”), access WAP services,
and provide full Internet access using technologies such as GPRS. Modern mobile
phones usually have a clock, alarm, and calculator and a few games depending on the
feature of the mobile phone.
The proponents discuss user-defined functions about retrieving Short Messages
Service (SMS) from message inbox, outbox, sent items and drafts of some mobile phone
by implementing their proposed mobile application which can recover text messages
that are accidentally or intentionally deleted.
Mobile phone users encounter problems like the moment an inbox becomes full
in their phone. When inbox becomes full it defines that many text messages have
occupied the allocated memory of mobile phone and there will be a problem in
receiving the next message that is why sometimes the user may empty or delete some
of the text messages to gain space in inbox for the next incoming text messages. Some
mobile phones like Smartphones has a capability of restoring a deleted text message or
Data files since it includes built in recycle bin just like computers. This is one of the
advantages mentioned about Smartphones comparing to some other mobile phones
that do not have such built in feature for the deleted text messages.
When a user want to save memory space in inbox during it is full based on the
allocated internal memory given to inbox, the users are forced to delete some certain
text messages that has been important. Further more once an important message has
been deleted there is no means of retrieval.
The objective of the study is to provide a solution to retrieve a deleted text
messages and compressing the messages into smaller size in order to obtain free space
in memory.
The Proposed Mobile Message Recycler System is capable to function as a text
messages recovery for the deleted text messages in mobile phone. The system is only
capable of compress and retrieving text messages. In addition, the message recycler
system is compressed and its storage is under external memory. This system is intended
to be applicable in W series of Sony Ericsson mobile phone with external memory.
Moreover according to the proponent’s research the average capacity of stored
messages in phone’s inbox alone has been between 500 to 700 messages in w series of
Sony Ericsson mobile phones, the message recycler storage capacity will be depending
to the total capacity of external memory in which the recycler will consume 5% of
external memory for the message recycler. Once a text message is deleted from the
message recycler it is permanently deleted and no longer retrievable.
Once the proponent has developed the system there will be a solution for the
users who encounter problem in restoring the deleted text messages. It will improve the
system in the means of saving more space and taking a compressed archive of text
messages for review moreover, it also provides a chance of retrieving text messages
back to its original location so that the users will confident about the deleted text
messages in terms of a possible recovery of text messages.
In this figure users make use of Mobile Phones. Once the user deletes a text message, the mobile
phone will interact with the Interface in order to do a compression and afterwards it will be transferred
into the message recycler. Functions are configured due to interface request from the message recycler
system. Once the user intends to delete a text message from the message recycler, the interface will
request from the message recycler system to perform a compression before transferring it into the
message recycler. To retrieve a certain text message the recycler will decompress the chosen text
message and restore it back to its original location. It is optional for the user to empty the message
recycler; once the user applies for emptying the message recycler, there will be no more chance to
retrieve the deleted text message from message recycler.