blackula

What does ROM do on a phone?

Hi. I asked about RAM the other day (thanks for answering!) but now I'm wondering what does ROM mean?!

Most Useful Answer blizzard7  Sep. 5, 2011 at 13:28

ROM stands for read-only memory. It's read-only because this is where the operating system (e.g Android, iOS, Windows Phone) lives and it will not be overwritten or changed in day-to-day use. Essentially when you jailbreak or root a phone, you are replacing or modifying what's in this read-only memory.

ROM is built-in to a phone like RAM. Some phone manufactuers (incorrectly) call a phone's total built-in storage space ROM. What they really mean is ROM and some storage extra space which isn't read-only.

An example is an HTC Desire is said to have a 512 MB ROM, but really the ROM is only 300 MBs and the rest is usable storage space.

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blizzard7  Sep. 5, 2011 at 13:28

ROM stands for read-only memory. It's read-only because this is where the operating system (e.g Android, iOS, Windows Phone) lives and it will not be overwritten or changed in day-to-day use. Essentially when you jailbreak or root a phone, you are replacing or modifying what's in this read-only memory.

ROM is built-in to a phone like RAM. Some phone manufactuers (incorrectly) call a phone's total built-in storage space ROM. What they really mean is ROM and some storage extra space which isn't read-only.

An example is an HTC Desire is said to have a 512 MB ROM, but really the ROM is only 300 MBs and the rest is usable storage space.

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