Verykool s400 - Manual (Page 16)

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In this menu, select Factory data reset and then select Reset phone
to clear all data in the phone memory. Select DRM reset to delete all
DRM licenses.
Accounts
 Add Account
To add new account of Corporate, Email, Facebook, Google,
Skype
TM
, or Twitter.
System
 Date & Time
Set time and date for the phone.
 Scheduled Power On & Off
Set time to power on/off the phone automatically.
 Accessibility
To set accessibility functions for the phone.
 Developer Options
Whether to turn on/off developer options, and select debugging and
apps to set.
 About Phone
To check status, battery use, legal information, etc.
24. SIM Toolkit
If your SIM card supports STK (SIM Tool Kit) function, the phone
can display different first level menu according to different STK card.
This function needs the network provider support. If user finds STK
function can’t operate normally, please contact the network provider.
If the network provider does not support this function, we do not
claim any responsibility whatsoever.
25. Sound Recorder
The phone support sound record function. You can send a recorded
file via Bluetooth, message or email.
26. System Update