${\displaystyle \underbrace {{\text{network id}}.{\text{mnc}}\!<\!{\text{MNC}}\!>} _{\text{Network Identifier}}.\underbrace {\color {blue}{\text{mcc}}\!<\!{\text{MCC}}\!>.{\text{gprs}}} _{\color {blue}{\text{Operator Identifier}}}}$

In your article, replace the image with:

<math>\underbrace{\text{network id}.\text{mnc}\!<\!\text{MNC}\!>}_{\text{Network Identifier} } . \underbrace{\color{blue}\text{mcc}\!<\!\text{MCC}\!>.\text{gprs} }_{\color{blue}\text{Operator Identifier} }</math>

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