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39

To understand why Nexus 7 can show more content than the Galaxy Nexus, I'll first explain two concepts: screen density and density-independent-pixel. But before we go into technical details, it may be worth to clarify the design goals of using density-independent-pixels. The goal is to define a UI that is similar in dimension across devices, regardless of ...


28

In the context of Android, more RAM means Android can keep more sleeping program in the RAM so they will be ready to be quickly resumed when you return back to the apps. More RAM means Android is going to spend less of its time killing and reloading apps from the internal memory/sd card, and instead spend more time doing actual work you care about. This ...


16

Well this is very subjective, because it depends what you're doing. First of all, true multitasking (having multiple apps run) requires a faster CPU, so that all the processes can run at a decent speed. You are right that for all these apps to remain in memory, you need more RAM. I have 512 MB RAM, and my processes only start getting killed if I run ...


15

On some devices, yes, there is a way. I am not certain which specific devices this works on, but there are two methods you can try. The most platform agnostic way to do it is generally the following: Install a launcher that allows you to create shortcuts to Activities. ADW Launcher and Launcher Pro are both free and allow this. Long press on an empty space ...


14

The typical audio only jack has 3 rings, usually call Tip, Ring, Sleeve (TRS). These typically map to Left, Right, and Ground. Phone manufactures wanted to make this jack work with existing headphone so they used a connector with 4 rings, called Tip, Ring, Ring, Sleeve (TRRS). These map to Left, Right, and Ground just like the 3 ring, but the final connector ...


13

There's a really good thread of discussion about this on AndroidForums here. In short, LEDs have a long life span (20k+ hours?). So the concern isn't really the LEDs burning out (although after a long period of time, they will eventually start losing the amount of output and their brightness will dim). The real concern is to not apply too much voltage to ...


11

Android System Info is a free app from the market which will tell you more details about your phone than you ever wanted to know. It has all the details you want about your CPU and Memory and much much more. Install it, start the app and check the System tab for all the information you are looking for.


10

This is for the NFC functionality. Those contacts are used to transmit the info to and from the receiver/transmitter on the back cover (seen below outlined in green, though you probably guessed it :) ). They have to put it on the back cover because NFC only works for usually no more than a few centimetres, and they need a way to feed the information back to ...


10

For the best resource out there, use PDADB. This details every comprehensive chip-set used, for the Droid Charge, this is the spec sheet given. As for Huawei U8160, this is the spec sheet given on that page. Depending on how open the manufacturer is with the more intimate details, some may be marked proprietary which will be stated clearly. The other ...


9

No. Apple's older iOS lineup and Samsung's Android tablets have a similar looking but different connector. You can't interchange them. And besides this: Apple's new ligthning plug clearly only works with iOS devices (iPhone 5 and iPad 4/mini and better). The available lightning-adapters also only work with iOS devices.


9

Random force closes are only suspicious if it's truly random (i.e. no plausible causes) and it's only happening on your device. In most other cases, it's simply due to poorly coded third party apps. There are two kinds of force close dialogs: Android offers to force close applications that fail to respond to an input event within five seconds. When this ...


8

Try using ButtonRemapper to assign a specific function or even to disable it. Be warned, though that this doesn't work on all devices and you NEED a rooted phone to use it.


8

Don't forget to check for water damage. Every phone that is sold by a reputable retailer (T-Mobile, Cingular, Verizon, Sprint, etc.) should contain a tiny indicator that clearly shows if water has attacked your phone. This little item is typically called the liquid damage indicator, or LDI for short. In almost every case, a red or pink indicator ...


8

http://www.ifixit.com/Teardown/ A good starting point. They usually note also the chip/part numbers in their teardown reports.


7

It really depends what you mean by superior. The Desire HD will be basically the same as the existing Desire but with a 4.3" screen and will have the same amount of internal storage as the Galaxy S. The Desire HD will have 768 MB of RAM instead of 512 MB on the Galaxy S. But the Desire HD will have the same Snapdragon processor as the old Desire, whereas ...


7

That's because the pixels per inch (PPI) is different between them. The higher the PPI, the higher the quality but at a cost of (relative) smaller screen size. So the Nexus 7 has 216 pixels per inch while the Galaxy Nexus has 316 pixels per inch. The resolution isn't everything, you also have to consider the density of the pixels. High PPI values have the ...


7

You can use an external Bluetooth or USB keyboard with the Nexus 7. For more information see the Connect to keyboards, mice, & other devices section of the Nexus 7 manual. Mike Elgan reports that the Nexus 7 also works with an Apple Bluetooth keyboard.


7

Start with the Android compatibility page. This outlines goals for Android's compatibility and links to the current Compatibility Definition Document which has the technical requirements. All versions of the CDD to date are below. Android 4.3, Android 4.2 and Android 4.1 "Jelly Bean" Android 4.0 "Ice Cream Sandwich" Android 3.0 "Honeycomb" not available ...


6

If the water finds its way into the circuitry and causes a short, that could be bad, but I don't think there is any good way to quantify how likely that is to happen to any phone. I have a Moto Droid and get it a little wet all the time and have never had a problem, although I have heard of people bricking their phone under the same circumstances. If you ...


6

LEDs do have a long lifespan (35K-50K hrs depending on the type of LED) but the issue is heat. The LEDs are intended to be used as a flash (ultra short duration) and probably don't have very robust heat managment systems if they have any at all. Each phone is going to be different. I would say that using it as a flashlight for a couple minutes tops is ...


6

As long as your phone is rooted, you can use the excellent Button Remapper app by appelflap as a convenient workaround. What the app will let you do is remap the camera button to work as the power button. After installing the app, find the entry for "(Camera)" and set its Action to "Power" and its State to "WAKE_DROPPED". (WAKE tells the key to register ...


6

Unfortunately the emulator is extremely slow on all platforms. Better hardware will only get you so far. Edit: Since there are now native x86 versions of the emulator, performance should be considerably improved. You should be able to get them through the SDK (or through Intel's website, see this Stack Overflow post).


6

While this is standard cover-your-assets boilerplate, the truth is you can charge your phone off of pretty much any USB charger out there, as long as the following things are true: The output specification is +5V DC, and at least 500mA. If it's more (700mA, 1000mA) you are generally fine; the phone will only draw what it needs. My HTC Magic's "official" ...


6

Android tracks events that affect battery usage and stores this information in batterystats.bin file. Some examples: length of time screen was on with a specific brithness setting which application (or non Android app process) and how long held a wake lock (prevents device from sleeping) CPU usage per process (Android app or other process) ...


6

Phablets are basically tablet / phone crossovers. Best examples are Samsung’s Galaxy Note and LG’s Optimus Vu. As per ComputerWorld: A phablet is a phone with a screen so big that it can be used as a tablet. There are no defined boundaries whatsoever in terms of screen sizes; so any tablet with phone (telephony) capabilities might also be termed a ...


6

In this specific case your friend is correct, but it can probably vary somewhat. We'll take the Galaxy Nexus as an example since it's a reasonably accurate internal representation of the other Samsung devices. The iFixit teardown helpfully identifies all of the major components of the device and their function. In step 5 they remove the wrapping from the ...


6

Yes, a "regular" set of headphones will work just fine, in much the same way that a single-channel earphone works in a stereo headphone jack. The other bits are for the microphone and the controls, but since your headphones won't have those it won't matter. I have had occasion to use 1st generation iPod earbuds as well as some generic earbuds in my Galaxy ...


6

JTAG has zero involvement with Android! You may find a JTAG being visible either under the battery or near the SIM/SDCard holder, its a circuitary pin-layout hidden, one may have to dismantle the back cover, usually 6 gold pins in a cluster close together. It is that, using a special hardware box that has a vast-array of cables with designated pins ...


6

There are several factors, which I'll address (pun intended) in no particular order. RAM is expensive Sure, memory chips may be cheap, but that's not the only (or even the main) cost. Alongside the RAM itself you need extra buses, power lines, bigger memory controllers, heatsinks, &c. The RAM also takes physical space on-chip. For oomph-per-dollar, at ...



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