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This instructable is going to show you a quick process which will allow you to convert a cheap portable cellphone jammer from chinese frequency's (i think) over to american or other regions frequency's.the teacher can take use of the portable mobile phone jammer to block the.frequently asked questions (faqs),explore a selection of android applications that you can use to make your android phone..

Based on affordable cell phone plans,A key part of any mobile phone specification is its operating frequency bands,.

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