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I got my earpiece replacement along with power jack after that i got my phone but 4g is not working in the device should i contact to the technician or what should i do ?
When you say earpiece replacement, you mean you had a new earpiece installed onto your screen of your iPhone 6s correct? 100% contact the tech. The tech should have done a Pre-Exam & Post-Exam of your device. 4G is just something we take for granted as it is just there, but if it is not, you sure notice quick as the download speeds are so much slower, so I would say that it would be easy for you to debate your corner. Take a look at the link, steps 25 to 28. The Wifi connectors are right next to the battery connector and the screen connectors, so it would not have taken much to caused a problem in this area or to the cable themselves. iPhone 6s Wi-Fi Diversity Antenna Replacement
