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RAM expander is an application uses part of your SD card as RAM and speed up your phone but you must have the large memory card. You don’t have the large memory card just convert your memory card into 4GB. We already discussed about the article in previous session. Now your memory card is capable to expand your RAM. Just think SD card can be RAM of your android devices which supports SWAP technology

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RAM of the smart phone will be increased on a great extent. This feature is just awesome since no external RAM has to be attached. It just swaps the memory of the RAM. Instead of using the RAM defend by the system; the app makes the free memory space into useful virtual RAM.

If you find all these steps confusing , then you could probably buy 

Wireless Flash Drive For Smartphones

by this method you can 

• Wirelessly store, share, stream movies, photos, music, and documents across your smartphones, tablets and computers
• Simultaneously connect & access data stored on up to 8 devices via Wi-Fi
• No internet connection, cables or router required, works on all Wi-Fi enabled devices
• Up to 4 hours of video streaming on a single charge
• Access with free app, compatible with iOS 5.0 or later, Android 2.3 or later and Kindle devices