Mtn Network: How to lock and unlock your phone airtime or credit

This is the same as call barring.
1. To lock dial *33*0000#
2. To unlock dial #330*0000#
3. To change your default code which is "0000", dial **03*old pin*new pin*new pin#

Note: pin must be four digits.

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  1. When filling the sections with your argumentation (, limit yourself within the paragraph to the consideration of one main idea. For writing a draft of the work, it is also useful to apply the method of sequential numbering of all paragraphs - this helps you to ensure that each paragraph (and its main idea) corresponds to "its place", that is, that in a logical sequence, each paragraph follows the previous paragraph and precedes subsequent. In the final version (see below), you can remove the paragraph numbers.


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