Thursday, March 6, 2014

How to root and install Google Play for Nokia X

As you may know, Google Play and other Google Apps (Gmail, Google Maps, ...) are not available on Google X and therefore you cannot access and install apps from Google Play. Fortunately, it's rather easy to root Nokia X and install Google Apps.

First, download and uncompressed following files and copy uncompressed files and folders into Nokia X storage.

1. Framaroot & explorer: fsharemediafire.
2. GApps for Nokia X:  fsharemediafire.
3. Extra apps (maps + launcher): fsharemediafire.


1. On Nokia X, go to Setting > Security and check "Unknown Sources" so that you can install downloaded apps to your Nokia X.

2. Install Framaroot and explorer apps which you copied into Nokia X storage.

3. Run Framaroot and choose Gandalf to root your device. After about 3s, your device is rooted and has SuperSE

4. Using Root Explorer to copy files in "3. NokiaX_Gapps" into /system/app

5. Change permissions for all copied files. Press and hold on a file and set rw-r--r-- as its permission as shown in following figure:

6. Restart your device and enjoy:

Thursday, March 6, 2014 by Toan Dinh Nguyen · 0

Monday, February 24, 2014

Specs comparison Samsung Galaxy S5, Sony XPERIA Z2, LG G Pro 2 and HTC ONE

Samsung has just announced its flagship Galaxy S5 at Mobile World Congress. 
Well, here is how it stacks up against others.

Samsung Galaxy S5 Sony Xperia Z2 LG G Pro 2 HTC One
Starting price N/A N/A N/A Free (on-contract)
Known Dimensions 5.59 x 2.85 x 0.32 inches (142 x 72.5 x 8.1mm) 5.78 x 2.89 x 0.32 inches (146.8 x 73.3 x 8.2mm) 6.22 x 3.22 x 0.33 inches (157.9 x 81.9 x 8.3mm) 5.41 x 2.69 x 0.37 inches (137.4 x 68.2 x 9.3mm)
Weight 5.11 oz (145 g) 5.57 oz. (158g) 6.07 oz. (172g) 5.04 oz. (143g)
Screen size 5.1 inches 5.2 inches 5.9 inches 4.7 inches
Screen resolution 1,920 x 1,080 (432ppi) 1,920 x 1,080 pixels (424ppi) 1,920 x 1,080 pixels (377ppi) 1,920 x 1,080 pixels (468ppi)
Screen type Super AMOLED Full HD Triluminos Full HD (IPS) Full HD IPS S-LCD3
Battery 2,800mAh (user removable) 3,200mAh 3,200mAh (user removable) 2,300mAh (non-removable)
Internal storage 16 / 32GB 16GB 16 / 32GB 32 / 64GB
External storage microSD (up to 128GB) microSD (up to 64GB) microSD None
Rear camera 16MP, LED flash, OIS, 20.7MP, LED flash, OIS 13MP, LED flash, OIS+ 4MP, LED flash, UltraPixel, OIS
Front-facing cam 2.0MP 2.2MP 2.1MP 2.1MP
Video capture 4K 4K 4K 1080p
NFC Yes Yes Yes Yes
Bluetooth v4.0 v4.0 v4.0 v4.0
SoC 2.5GHz Qualcomm Snapdragon 800 2.3GHz Qualcomm Snapdragon 801 2.26 GHz Qualcomm Snapdragon 800 1.7GHz Qualcomm Snapdragon 600
GPU Adreno 330 Adreno 330 Unspecified Adreno 320
WiFi 802.11a/ac/b/g/n, dual-band 802.11a/ac/b/g/n, dual-band 802.11a/ac/b/g/n, dual-band 802.11a/ac/b/g/n, dual-band
Operating system Android 4.4 Android 4.4 Android 4.4 Android 4.4
Standout features Fingerprint scanner, heart rate sensor, Ultra Power Saving Mode, IP67 certified, 4K video IP58 certified, BRAVIA screen tech, Exmor RS camera, 4K video KnockCode, Backside buttons, Mini view, Multi Window UltraPixel camera, Zoe, BoomSound, BlinkFeed

Monday, February 24, 2014 by Toan Dinh Nguyen · 0

Friday, February 14, 2014

Show network signal strength in number for iPhone

A small trick helps you to check your network signal with number instead of signal icon. It should be helpful when you are in areas having weak network signal. To display signal strength number, dial *3001#12345#* and press Call:

iPhone will open Field Test app and signal strength will display on the top-left corner of your phone. The signal strength is measured in dB. The higher number shows the better signal strength and the maximum signal value is 0.

To display signal in number as default, press and hold Power and Home buttons at the same time until iPhone is shut down. Then, turn on the phone again to see the signal strength in number.

In the case you want to restore to previous setting, open Field Test app and press Home button to return the the home screen. 

Friday, February 14, 2014 by Toan Dinh Nguyen · 0

Thursday, February 13, 2014

How free mobile apps earn money?

There are several ways developers use to earn money from their free apps:

Publish free and paid versions:

It's quite common that developers publish their apps in two forms: free and paid. Paid versions are usually come with Pro or HD in their names. In free version, the authors can put a link to the paid version on iTunes or Play Store.

The free version acts as a "decoy". If users are satisfied with an app, they can buy a Pro version for more features. The main advantage of this method is that free apps tend to be downloaded 10 times more than paid apps.

Money Lover, for an example, is an app published in free and paid versions. The free app has been downloaded 600.000 times, in which about 7000 users decide to buy the paid version (~$5 USD) and $35.000 goes to author's pocket.

In-App Purchase

Optional purchase inside apps is a good way to earn money compared to selling apps with cheap price (e.g. $0.99). 49/50 apps having highest revenue in USA App Store belong to this category. For instance, on average Clash of Clans earns $3.000.000 USD per day in 2013 with In-App Purchase.


Displaying banner ads in apps is also a common way to earn money in free apps. To earn money with this method, yours apps should have a a lot of traffic. Flappy Birth is supposed to earn about $50.000 USD per day from more than 50k downloads.

Two big ad systems are iAds (Apple) and Admod (Google). On average, authors receive $2 USD for 100 downloads.

CPI (Cost per Install)

This is a quite new method to earn money with mobile apps. Users will see some "pop-up" in games or apps about "Install Now" for other apps. Usually, $0.8-$3 USD is paid for 1 app installation from CPI companies.


You can also try to raise funds for your apps from donors. If you have a nice idea, you can find funds from companies. In return, you can add companies' logos or names in your apps.

Thursday, February 13, 2014 by Toan Dinh Nguyen · 0

Tuesday, February 11, 2014

Remove ads in Flappy Bird mobile game

Although the game has been withdrawn from sale on Apple App Store and Google Play, many people still play it on their phones. This post doesn't tell you how to play this game and gain high score but how to get rid of ads as I guess some people may feel bothersome because the ads keep displaying while playing.

You can remove the ads easily by turning on "Airplane mode" before playing. Without Internet connection, the ads won't appear anymore and you can enjoy the game more :-) In the case you still see the ads in Airplane mode, restart the app.

Tuesday, February 11, 2014 by Toan Dinh Nguyen · 0

Friday, August 2, 2013

Countdown timer using google

If you need a stopwatch, you can use the one inside Google search. All you need is go to Google homepage and input "set timer for n minutes". You will see a stopwatch with basic buttons such as stop and reset. Of course you can use other units, e.g. hour or second, instead of minute. This stopwatch also plays a sound when the countdown ends.

Friday, August 2, 2013 by Toan Dinh Nguyen · 0

Monday, May 13, 2013

Buy your domain with 0.99 USD

To save money, you can buy your domain with discount code.

Step 1: find discount code.

You can find discount code from Network Solutions, a domain registration company, at . You also may need to check the for more discount codes. At this time, you can use code: NCDISC0040 that expires on 30/06/2013 to buy domains (.net, .com, .org, .biz, .info) with $0.99.

There are two ways to use the discount code:

1) Click on the blue text to go to website that provides the discount code.

or 2) input the code in the check-out process.

Step 2: find your domain

Input your desired domain name and check.

Note: Don't use suggested names from website.

After finding your domain name, click Continue

Using the discount code, you only pay $0.99 for $34.99 domain name

Step 3: register new account and login
You should input your real identification to protect your domain.

Step 4: check-out
Provide payment information to complete

Monday, May 13, 2013 by Toan Dinh Nguyen · 0

[Only in Vietnam] Some funny pictures only have in Viet Nam (Part 5)

You can only see in Vietnam!


Safe work

Never miss your exam again!

by Toan Dinh Nguyen · 0