Vimeo Video School produced a great piece on making the most of your camera phone to produce good quality videos.
Here’s a summary of that post as well as some more tips:
Keep it short – this one applies to videos in general. No one wants to sit through videos endlessly and the longer the video, the higher the chance of the viewer not watching it in its entirety. For most videos produced for commercial use, between 1-2 minutes of runtime is adequate expect for instructional or training videos which can be slightly longer.
Don’t shake to much – to get good shots, its important not to move your hands or arms too much while recording. Where possible, use zoom rather than moving closer/further physically. Spend some time practising initially. You can also consider investing in a tripod for your phone if available.
Stick to landscape orientation – whilst you can record videos in portrait (vertical) mode, in most cases, landscape mode will produce better results.
Shoot by day – most camera phones aren’t yet capable of producing good quality recordings in low-light settings. Shooting during the day can help you overcome this.
Audio check – recording devices on mobile phones still haven’t progressed in the same way that the camera lenses have. Limiting the amount of speech in your recording or purchasing an external microphone will help keep the overall quality of your recordings high.
Think ahead (if you’re an iPhone user, don’t read this!) – As you begin recording more and more videos, you may find yourself running out of memory soon. Most camera phones nowadays (with the exception of iPhone) offer expandable memory allowing you to significantly increase the storage capacity for your recordings.