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 Stock ROM vs Custom ROM

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Shohag Gsm™




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PostSubject: Stock ROM vs Custom ROM   Sat Apr 06, 2013 5:49 pm

What is ROM?

Short for Read Only Memory, in this case referring to the phone's
internal memory where your firmware and applications are stored. When
people say they're flashing a new ROM, it means they are flashing a new
version of the firmware on to their phone - the two terms are
interchangeable.


What is STOCK ROM?

Stock ROM is the ROM default your mobile phone manufacturer. Sure
there are some advantages offered, one of which stability. Stock ROM is
a ROM that very carefully in a release through various experiments and
lab by the manufacturer before it is actually released to the public.


What is CUSTOM ROM?

Custom ROM is a ROM derived from the Stock ROM, which tend to be
fast in a release. To the extent that there are developers Custom ROM
that gives the term "nightly" for the ROM is still trial and error
phase, "RC (Release Candidate)" for the most stable ROM, as well as
"stable" for the ROM which is considered to be almost the same
stability when compared to parent ROM (Stock ROM).


Why do we use CUSTOM ROM?

Update Frequency

Using a custom ROM usually results in more frequent updates that fix
bugs and introduce new features because the developer behind the ROM
doesn't have the same procedures and red tape that the
manufacturer+carrier combo does.


A quality update can be churned faster because it doesn't involve
the bureaucracy of 30 different project managers, 15 vice presidents,
and 5 dozen marketing departments.

A ROM developer usually gains a loyal community which beta tests his
updates in real life situations and provide feedback, or even fixes
bugs - that's the beauty of open source software.

And that ROMs are usually free and supported by optional donations? If you can't afford to pay for it, you don't have to.

Finally, most custom ROMs out there are updateable over the air (OTA) and without reinstalling anything.


Better Performance And Efficiency

Custom ROMs are oftentimes faster, more efficient, and use less memory because:

the developer ripped out useless garbage, such as carrier installed
apps or the developer optimized the kernel. For example, an undervolted
kernel can provide a much better battery life than the stock one.


Ability To Install Apps To The SD Card


Most custom ROMs nowadays come with the ability to install applications to the SD card, called Apps2SD (or A2SD).
This is currently not possible on stock ROMs, even in Android 2.1 and is supposedly on Google's TODO list.


The Downsides Of Custom ROMs

Clean Wipe

In order to install a custom ROM, you need to perform a clean wipe.
This means you will lose all existing data, so you have to back everything up first.


Potential Problems

Custom ROMs could have bugs… but then so do the stock ones.
However, in case you do find a bug, you actually have a 2-way channel
of reporting it - post in the ROM forum and you will more than likely
get an answer back and your bug acknowledged.
Try doing this to your phone manufacturer and see if you can get past
the first level of outsourced monkeys, let alone actual developers.


You May Void Your Warranty

It's possible that custom rooting will void your warranty because
you will "break the seal" on the boot loader by installing a custom rom
, so double think when insalling a Custom Rom.
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PostSubject: Re: Stock ROM vs Custom ROM   Fri Oct 25, 2013 5:29 am

great basic knowledge post.
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