4.21 SIM Toolkit
STK service is the tool kit of SIM card. This phone supports the service function .The specific items are
depended by SIM card and network. Service menu will be auto added to the phone menu when supported
by network and SIM card..
4.22 YouTube Go
You can use YouTube to watch the video. Please login the Google account before use.
4.23 Sound Recorder
You can record audio and set the recorded audio as a ringtone.
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