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Requirements: This tutorial is for advanced users, if you don’t understand what you are doing, do not proceed or you will brick your phone.The devise has to be Rooted and the CWM Recovery needs to be installed on it.USB Debugging from the Developer Options must be enabled.Your phone’s battery must have enough power left. In case your device powers off while you’re flashing the new ROM, then you will be forced to repeat the entire tutorial once again.Pre-Installation Notes: Installed Apps, SMS, Call Logs, etc ... will be removed, so you can use Helium app or Titanium Backup to backup your installed apps and SMS backup & restore, Call Logs backup & restore and APN Settings Backup & Restore to backup your SMS, Call logs and APN Internet Settings. (Root access must be granted for some oh these tools).Remember to sync your Contacts info with your Gmail account. This will backup all your saved phone numbers to your Google profile so you can restore them after the new ROM is flashed with success.Tutorial: Download the latest build of Cyanogen Mod version Here. (Do not extract the files). Download Gapps for Android custom ROMs Here. (Do not extract the files). Connect the smartphone to your computer using the USB cable. Copy & paste Cyanogen Mod and Gapps to your smartphone internal storage. Disconnect the smartphone from your computer. Power off your smartphone. Boot the Galaxy S2 I9100G into Custom Recovery Mode by pressing Volume Up + Home Button + Power Button together. Once the Samsung Galaxy logo appears release all buttons. Once the CWM menu is shown you need to create a Nandroid Backup of your current ROM. Select “Backup and Restore” option then use “Backup” and save the nandroid file to your device’s internal /external storage. Now you have to apply a factory reset. select “Wipe Data/Factory Reset” then confirm. Install the Cyanogen Mod custom ROM. select “Install zip from sdcard” or “Install zip from Internal Storage” if you don’t have an external SD Card mounted to your smartphone then find the Cyanogen Mod ROM file and install it then confirm the process. After the ROM is installed you need to flash the Gapps file. Use the same actions as in step 10 but instead of flashing the ROM file you need to flash Gapps. When the installation is complete you will need to get back to the main CWM recovery screen and reboot the device. The Cyanogen Mod first boot process will take at most ten minutes to complete then you will see the Cyanogen Mod home screen.Post-Installation Notes: If the device doesn’t boot into normal mode with the new ROM and you didn’t apply factory reset, then you should return to step 9 and apply it.You shouldn’t press any buttons while Cyanogen Mod and Gapps are installing, just wait for the process to finish before applying the next step.In case you don’t like the Samsung Galaxy S2 I9100G performance while running Cyanogen Mod ROM, then you should use the Nandroid backup file created in step 8 and restore your device to its previous ROM.You can check for updates by navigating to Settings > About Phone > Cyanogen Mod Updates.

Just two days ago Microsoft announced a new trade-in deal for the US and Canada, which can give you up to $250 of store credit if you give up on your old smartphone or tablet. Today Microsoft has extended this deal with a special offer. If you opt to return your old Apple iPhone 4, iPhone 4S or Samsung Galaxy S II, you can have a Lumia 1020 or Lumia 1520 for free. Your old phone just needs to be working, with no missing parts or pieces. The deal expires on March 2, or until supplies last. he catch is that you'll have to sign a two-year contract with AT&T, to get the free Lumia unit. Lumia 1520 otherwise costs $200 on contract, while the Lumia 1020 has already dropped down to just $100 on a contract. Anyway, if you want to trade in your old gadget for a new Windows-based one, feel free to explore all deals throughout the US and Canada before making a decision. Source