Just get a new iPhone 4, and want to play your funny FLV videos on iPhone 4? The trouble with FLV is the iPhone 4 don't understand what to do with it. So you need a third-part FLV to iPhone 4 Converter to convert the FLV files to iPhone 4 supported format first.
To make it simple, here we recommend you Video to iPhone 4 Converter -- Cucusoft DVD to iPhone 4 Converter Suite which is a professional FLV to iPhone 4 Converter, can convert FLV to iPhone 4 compatible format fast and easily. Free download via the link below and install it, then follow this guide to convert FLV to iPhone 4.
Step 1: Run Cucusoft DVD to iPhone 4 Converter Suite and click the second button to run iPhone Video Converter, then click "Open fIle" to load the FLV files you want to convert.

Step 2: Click "Profile" pull-down list to select the output format, then click "Output" button to select the output folder.

Step 3: After setting, start to convert FLV to iPhone 4 with the FLV to iPhone 4 Converter. Then transfer the converted files to your iPhone 4 with iTunes and play FLV on iPhone 4 freely!
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