who invented the cell phone

{"cid":"91171109","title":"Plastic Shell 2G 3G 4G LTE Cell Phone Signal Blocker Jammer 5.6W WiFi Bluetooth","imgUrl":"https:\/\/img.chinax.com\/nimg\/fa\/db\/233a1073c4003468b6ce7be75c9f-200x200-1.jpg","attrs":{"Price":"Negotiable","Brand Name":"GREETWIN","Model Number":"GW-JN8AR-Pro","Minimum Order Quantity":"1PCS","Delivery Time":"3 Working Days After Received Payment","Certification":"SGS, ISO9001","Place of Origin":"China","Payment Terms":"T\/T, L\/C","Supply Ability":"20000PCS Per Month","Packaging Details":"Box with PE Foam","Product Name":"5.8G Handheld Signal Jammer","Special":"With ABS Plastic Shell And Easy To Carry","Antennas":"8 Omni Antennas","Advantage":"Separate Swtich For Each Band","Working Time":"About 1.5 Hours","Jamming range":"1 - 20m Depending On Mobile Signal Strength","Output Power":"5.6W","Warranty":"One Year"}}

{"cid":"91184012","title":"Selectable Cell Phone Signal Jammer 3G Lojack GPS For Examination Hall","imgUrl":"https:\/\/img.chinax.com\/nimg\/ff\/d6\/9d44d9c3f2b146580108cd818a37-200x200-1.jpg","attrs":{"Price":"negotiated price","Brand Name":"Wolvesteam","Model Number":"JM132839","Minimum Order Quantity":"1 pcs","Delivery Time":"3-10 days","Certification":"CE,FCC","Place of Origin":"China","Payment Terms":"L\/C, D\/P, T\/T, Western Union,Paypal","Supply Ability":"2000 pcs per years","Packaging Details":"Dimension:127\/250x75x34mm Weight:500g","HS Code":"8543709200","Type":"Handheld","Packing":"Neutral Packing","Signal Jammer for":"3G Lojack GPS Mobile Phone Signal","Weight":"500g","Dimension":"127\/250x75x34mm","Jamming range":"Up to 15M","Color":"Black"}}

{"cid":"91197233","title":"3G Lojack GPS 15M 3W Mobile Phone Scrambler For Examination Hall","imgUrl":"https:\/\/img.chinax.com\/nimg\/9e\/3e\/e8c0608daec47649a6551bf0784f-200x200-1.jpg","attrs":{"Price":"negotiated price","Brand Name":"Wolvesteam","Model Number":"JM132839","Minimum Order Quantity":"1 pcs","Delivery Time":"3-10 days","Certification":"CE,FCC","Place of Origin":"China","Payment Terms":"L\/C, D\/P, T\/T, Western Union,Paypal","Supply Ability":"2000 pcs per years","Packaging Details":"Dimension:127\/250x75x34mm Weight:500g","HS Code":"8543709200","Type":"Handheld","Packing":"Neutral Packing","Signal Jammer for":"3G Lojack GPS Mobile Phone Signal","Weight":"500g","Dimension":"127\/250x75x34mm","Jamming range":"Up to 15M","Color":"Black"}}