Under the standby page, pull down the page and click [Settings].
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2. Find the phone option and click on [Phone]. 3. See the last column [Carrier Call related Settings], click. 4. If you have the options of voice mail, fixed dialing, call forwarding, call restriction, and other Settings, select [Call Restriction]. 5. There is a selection of features to turn off or on, and the second to last item is to remove all restrictions. (tick to remove) 6. Enter the password and click [OK]
Go to \"Settings > Security > Application encryption\