Call Forwarding for iPhone: How to Set up or Disable Call Forwarding in iOS

Call forwarding is useful if you are expected to be unavailable for receiving calls or lose cell phone coverage for some time. Call forwarding is not something that is "new" to modern phones. It is a feature which is invented in 1960s (the patent expired in 1980) of some telephone switching systems. But with iPhone/iOS, there is a convenient call forwarding feature in iOS for you to set up call forwarding to forward calls to a landline or other phone by its number or disable the call forwarding. » Read more

Reference: Special HTML Characters

HTML supports many characters/symbols such as mathematical symbols, and currency symbols. They are not present on a normal keyboard. And some of these characters may have special meanings for formatting text. To add such characters / symbols to an HTML text, you can use an HTML entity name or an entity number in decimal or hexadecimal. This post list many special Characters in HTML as a friendly reference. » Read more

Getting Rid of DTS/AC3 Audio using ffmpeg on Linux to Play MKV Files on iOS or Android

I encountered the problem on iPhone that MKV video files with AC3 are played with no sound. The OPlayer reports to me that “According to DTS patent, DTS is forbidden to play , None of the media player on iPhone/iPad can play DTS”. dts-ac3-on-mobile.png However, the video file can be played in MPlayer on Linux just well. Checking MPlayer’s output: ========================================================================== Opening audio decoder: [ffmpeg] FFmpeg/libavcodec audio decoders [ac3 @ 0x7ff826946dc0]Channel layout '5.1(side)' with 6 channels does not match specified number of channels 2: ignoring specified channel layout AUDIO: 48000 Hz, 2 ch, floatle, 640.0 kbit/20.83% (ratio: 80000->384000) Selected audio codec: [ffac3] afm: ffmpeg (FFmpeg AC-3) ========================================================================== Here, “Selected audio codec: [ffac3] afm: ffmpeg (FFmpeg AC-3)” indicates that the audio is encoded in AC-3. » Read more

Changing iPhone Holiday Calendar to Your Local One

I usually use iPhone in the English language. However, I find the iPhone calendar app includes a US holiday calendar subscribed while I am not in US and displaying US holidays in the iPhone calendar is no use and kind of annoying to me. holiday-calendar-iphone-us.png After some investigation, I find the way to set the iPhone holiday calendar to the local or specific one. » Read more

How to Play YouTube Video in Background on iPhone

This post introduces how to play YouTube video in background on your iPhone. With this tip, you will need not to keep the YouTube app opening all the time. So you can use other apps on iPhone while listening to the music or talk or others from YouTube. This tip should also work on other iOS devices such as iPad. To make YouTube videos play in background, you need to open YouTube in the browser instead of the YouTube app. » Read more