some phone carriers give some type of internet packages where you can only use whatsapp and viber texting, if you try to call it will not work. you can try to use a vpn but that will only work for like 2 seconds and turn itself off so basically im curious how their doing it any ideas?
ps: I dont wanna learn it cuz i want free wifi it's just out of my curiosity i already pay for internet.
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from hacking: security in practice https://ift.tt/2VaVvps
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