I'm using Samsung Galaxy S5. When I entered in the dial *#12580*369#, it appeared some information about the phone. One of them is "RF Cal" (it is formatted like a date). 1. Does anyone knows what it is? 2. What does "RF Cal" stands for? 3. Where did this terminology come from? What organization/person coined it? 4. If "RF Cal" is the manufacturing date of the phone, then why not just call it the manufacturing date of MFD for example? Is it because there is a difference?

I am searching for the official name of the third (right) Android on-screen button. |Android version|On-screen buttons| |-|-| |1-4.4|| |5.0+|| The left and middle buttons are clear: - Left: **Back** button - Middle: **Home** button - Right: ??? Please include a reference where the name of the third/right button is stated in your answer.

When I go to flash with Odin, I see an option for "T Flash". What does it do? Other options include, * Auto Reboot * Re-Partition * F. Reset Time * Device Info * Nand Erase All * Flash Lock * **T Flash** (this option) * Phone EFS Clear * Phone Bootloader Update

What is Android InCallUI? I keep seeing it under apps I've used. I googled it and I keep seeing it related to this xPrivacy Pro software. I have an Android ZTE Z812 phone and am wondering how I find out if this software is installed on my phone and how to access it?

Both Heimdall and Odin have options for a PIT file. From Heimdall's option you can find, > Action: print-pit > Arguments: [--file ] [--verbose] [--no-reboot] [--stdout-errors] [--usb-log-level ] > > Description: Prints the contents of a PIT file in a human readable format. If a filename is not provided then Heimdall retrieves the PIT file from the connected device. And, from Odin there is a specific tab for it, when you click on the tab it says, > Do not use this tab. This tab is for engineers. You device will be changed with the pit in the CSC file. So what is a PIT file, and where is it documented anywhere? Can I generate one automatically?

The title pretty much says it all. What is the difference between the official and unofficial version of a ROM? From what I've seen, unofficial comes before official, for ROMs like cyanogenmod.

I see the term JTAG used for reviving dead Android devices that otherwise don't respond to anything and aren't seen when USB connected. It seems that it's something done from the physical hardware side of the device (as opposed to some pure software based solution) and I've heard the term used elsewhere (in gaming consoles). I don't find much else about it, and I'd like to know specifically how it relates to Androids and similar devices. It seems to be a term in electronics or electrical engineering, both of which I am unfamiliar with. I'm wondering what it is and why it can be used on hard bricked devices.

Most devices seem to have multiple "names" depending on the context, e.g. marketing, updates or rooting. For example: * Huawei P8 lite (actually, not specific enough since there are at least two variants) * ALE-L21 (or ALE-L04) * hi6210sft (ro.product.name from build.prop) * BalongV8R1SFT (ro.product.board) What are the definitions of all these "names"?