Tech News About <br />Oppo announces the world's first dual camera with 5x zoom; <br />Airtel removes roaming charge on calls, data <br />OnePlus 5 may have Dual-edge screen, 256GB of storage and a 23MP camera <br />Samsung Galaxy Tab S3 launched at MWC 2017 here Specs; <br />Samsung Galaxy Book launched at MWC 2017 here specs; <br />Xiaomi Mi 5C announced with the first own Xiaomi Processor Surge S1; <br />Android 7.1 beta for OnePlus 3 and 3T starts rolling out <br />Apple iPhone 8 may have a USB-C Type port;